3 *---------------------------------------------------------------------
4 * v1.43 Released 4/30/2011
6 * 1. nsig_to_radar.c: Added antenna scan mode to radar header.
7 * Added azimuth to sweep header for RHI.
8 * Fixed a bug that caused incorrect elevation in ray headers for RHI.
9 * 2. nsig.c (nsig_read_sweep): Bug fix: Removed static qualifier from
10 * ingest structure definitions, which caused problems if multiple radars
11 * are ingested. Also turned off debug print accidently left on
12 * in previous release. Thanks to James Ward for the bug report.
13 * 3. wsr88d.c, wsr88d_to_radar.c: Fixed problem that occurred in the rare
14 * case in which a non-data message appears among data messages.
15 * wsr88d_to_radar.c: Bug fix: Initialize sweep elevation.
16 * Thanks to Dan Sheldon for the bug reports and fixes.
17 * 4. configure.in: Changed default directory to /usr/local/trmm/.
18 * 5. Removed references to EDGE. Thanks to Andy Spencer for the patch.
19 *---------------------------------------------------------------------
20 * v1.42 Released 7/12/2011
22 * 1. radar_to_uf.c (RSL_radar_to_uf_fp): Changed scale_factor used for storing
23 * differential phase (PH) in UF from 100 to 10. The usual scale factor
24 * of 100 caused values over 327.67 to become negative when converted to
26 *---------------------------------------------------------------------
27 * v1.41 Released 6/22/2011
29 * 1. wsr88d_m31.c: Simplified the WSR-88D ray structure and supporting code.
30 * Added support for dual-polarization data fields.
31 * Thanks go to Andy Spencer for code contributions.
32 * wsr88d_to_radar.c, wsr88d_m31.c: Renamed load_wsr88d_m31_into_radar to
33 * wsr88d_load_m31_into_radar, to be consistent with naming convention.
34 * 2. Added support for Sigmet 2-byte data types, as well as HydroClass 1 and 2
35 * byte types. Files involved: nsig_to_radar.c, nsig.c, nsig.h, volume.c.
36 * Modified nsig_to_radar.c and rsl.h to handle Sigmet dual PRF.
37 * Thanks to Fabio Sato and Cesar Beneti for the dual PRF code.
38 * 3. Completed DORADE ingest. Files involved: dorade_to_radar.c, dorade.c,
40 * 4. rsl.h, radar.c, radar_to_uf.c, uf_to_radar.c, volume.c: modified for RHI.
41 * nsig_to_radar.c: Thanks go to Scott Collis for a bug fix involving RHI.
42 * 5. anyformat_to_radar.c: Thanks to Thiago Biscaro for fixing a pipe problem
43 * that caused processes to remain open.
44 * 6. gzip.c: Thanks to Dan Sheldon for fix for a file descriptor leak.
45 *---------------------------------------------------------------------
46 * v1.40 Released 10/10/2008
48 * 1. wsr88d_m31.c (load_wsr88d_m31_into_radar): Corrected a potential problem
49 * in which the end of sweep or volume might occur at a point in the program
50 * that was isolated from the code that handles that condition.
51 * Store vcp in radar header.
52 * 2. rsl.h: Added vcp to radar header structure for WSR-88D.
53 * 3. nsig_to_radar.c: Corrected a problem involving Extended Header, which
54 * when present, caused elevation in ray header to be set to 0.
55 * 4. wsr88d_m31.c (wsr88d_load_ray_into_radar): Changed the way we determine
56 * whether or not to keep the reflectivity field (we don't want it from
57 * Doppler split cuts). The previous method was inadequate for VCP 121.
58 * 5. read_write.c (RSL_write_radar_fp, RSL_write_volume, RSL_write_sweep)
59 * (RSL_write_ray): Initialize header_buf to zero to avoid junk in output
60 * files. This provides clean outputs for comparing in test situations.
61 *---------------------------------------------------------------------
62 * v1.39 Released 07/24/2008
64 * 1. Added wsr88d_m31.c. It contains routines to handle new Message Type 31
65 * in WSR-88D Level II Build 10.
66 * 2. wsr88d_to_radar.c: Modified to call message 31 routine.
67 * 3. wsr88d.c: Added code for VCPs 211, 212, 213.
68 * 4. lassen_to_radar.c: Added a fix for PhiDP provided by Scott Collis of BMRC.
70 *---------------------------------------------------------------------
71 * v1.38 Released 11/29/2007
73 * 1. wsr88d.c (wsr88d_read_sweep): Modified to handle unusual message packets
74 * at start of WSR-88D files from some future GPM sites.
76 *---------------------------------------------------------------------
77 * v1.37 Released 06/19/2007 (Severity: low)
79 * 1. radar_to_uf.c, uf_to_radar.c: Modified to use Local Use Header to store
80 * and retrieve WSR-88D VR azimuth. This is necessary because WSR-88D runs
81 * separate scans for DZ and VR at lower elevations, which means that they
82 * have different azimuths for a given ray. Thanks go to Pat Kennedy of CSU
83 * for discovering this problem and for bringing it to our attention.
84 * 2. lassen_load_sweep in lassen_to_radar.c: Removed 1.4 dB correction for
85 * reflectivity--BMRC version no longer uses it.
87 *---------------------------------------------------------------------
88 * v1.36 Released 08/29/2006 (Severity: low)
90 * 1. Forgot to put the modified wsr88d_locations.dat file into previous
93 *---------------------------------------------------------------------
94 * v1.35 Released 08/28/2006 (Severity: low)
96 * 1. lassen_to_radar.c: fixed a bug in lassen_load_sweep where sweep index
97 * was being used for sweep number in headers.
98 * 2. radar.c: Modified RSL_get_volume to return volume for any field type.
99 * It had been limited to velocity, spectrum width and reflectivity types.
100 * 3. Added SQ_INDEX for Signal Quality Index field. Files modified: rsl.h,
101 * volume.c, nsig_to_radar.c, nsig.h, uf_to_radar.c, radar_to_uf.c.
102 * 4. wsr88d_locations.dat modified to change height units from feet to meters.
103 * Thanks go to Dave Makofski for finding and fixing that one.
105 *---------------------------------------------------------------------
106 * v1.34 Released 02/15/2006 (Severity: low)
108 * 1. wsr88d.c: Fixed a bug in checking msg_type. The problem occurred while
109 * processing data from Houston, which recently switched over to the new
110 * Open RDA (ORDA) being implemented by NEXRAD. Msg_type is in the
111 * righthand byte of a two-byte word, the left containing Channel ID,
112 * but the full two-byte value was being used to check msg_type. This
113 * became a problem when ORDA used a non-zero value for Channel ID.
114 * 2. wsr88d.c and wsr88d_to_radar.c: Added information for new VCPs 12 and
116 * 3. Added Huntsville site to wsr88d_locations.dat.
118 *---------------------------------------------------------------------
119 * v1.33 Began 02/25/2004. Released 08/27/2004 (Severity: low)
121 * 1. Modified wsr88d_to_radar.c and anyformat_to_radar.c to handle change in
122 * WSR-88D header record for Level II Build 5 data format.
123 * 2. Fixed a bug in wsr88d.c, wsr88d_read_sweep, which caused the last ray
124 * of sweep to be deleted along with empty rays in second tilt and above.
126 *---------------------------------------------------------------------
127 * v1.32 Began 11/05/2003. Released 02/13/2004 (Severity: low)
129 * 1. Changed computation of sweep seconds in nsig_to_radar.c to eliminate
131 * 2. wsr88d_to_radar.c: removed call to wsr88d_get_wavelength, which computed
132 * the WSR-88D wavelength when parameters were available, or returned a
133 * constant otherwise. Replaced with constant wavelength of 10 cm. Thanks to
134 * Joe Holmes of SIGMET for noticing differing wavelengths between fields.
135 * 3. Added ingest for Rainbow format. Only handles DZ.
137 *---------------------------------------------------------------------
138 * v1.31 Began 04/30/2003. Released 09/03/2003 (Severity: low)
140 * 1. nsig_to_radar.c: removed unused #define, made some cosmetic changes in
141 * code and comment alignment.
142 * 2. Makefile.am: Added line to install include-directory under target
144 * 3. Added code to configure.in to fix yywrap unresolved reference that
145 * occurred when installing rsl when the TSDIS toolkit was not installed.
147 *---------------------------------------------------------------------
148 * v1.30 Began 07/30/2001. Released 03/13/2003 (Severity: low)
150 * 1. Increased the size of parameter arrays in nsig.c as recommended by
151 * Paul Kucera, to accommodate NPOL polarimetric parameters.
152 * 2. Fixed a bug in nsig_endianess in nsig.c.
153 * 3. Modified uf_to_radar to compute unambiguous range using PRF. Reduced
154 * UF record length by removing extra byte at end of record. Made to handle
155 * 4-digit years (previously assumed 2-digit, as declared in UF documention).
156 * 4. Modified hdf_to_radar to use more accurate value for sweep.h.nrays.
157 * 5. Corrected computation in function wsr88d_get_azimuth_rate in wsr88d.c.
158 * 6. Fixed bug in sweep rate computation in wsr88d.c
159 * 7. Changed wsr88d_ray_to_float in wsr88d.c to use field data pointers
160 * provided in the data, instead of computing offsets. The latter method is
161 * incorrect according to NOAA Radar Operations Center.
162 * 8. Modified radar_to_uf to get fixed angle for mandatory header from value
163 * stored in ray. Previously used average elevation of sweep.
164 * 9. Added examples/adjust_gate_size.c, and added enhanced version of qlook.c
166 *10. Fixed problem in which rsl libraries could not be built if a library
167 * didn't already exist in the target directory. Brought configure.in up to
168 * date with autoconf version 2.53 standards. Removed acconfig.h.
169 *11. Removed outdated email addresses found in comments.
171 *---------------------------------------------------------------------
172 * v1.29 Began 09/19/2000. Released 4/3/2001 (Severity: low)
174 * 1. Modified radar_to_hdf_1.c maskBuild() to build MZ mask differently:
175 * maskBuild was checking where CZ and DZ volumes were equal
176 * to build MZ volume (mask). Now, maskBuild just checks where
177 * CZ volume == BADVAL, for runtime speed, and because the comparison between
178 * CZ and DZ volumes was corrupted by the addition of qcParm[ZCAL] to
179 * each CZ range bin in level_1_qc.c qualityControl(). This change is
180 * compatible with Danny Rosenfeld's algorithm by which CZ range bins
182 * 2. Included Stacy Brodzik's modifications for storing calibration constants
183 * in UF (radar_to_uf.c, uf_to_radar.c).
184 * 3. Corrected version string and units for sweep rate written to UF mandatory
185 * header in radar_to_uf.c, thanks to Joseph Holmes of Sigmet for catching
186 * the inaccuracies. Corrected rounding error in latitude/longitude for UF
187 * mandatory header in same program. Modified assignments of sweep rate
188 * and/or azimuth rate in uf_to_radar.c and hdf_to_radar.c
190 *---------------------------------------------------------------------
191 * v1.28 Began 03/23/2000. Released: 7/24/2000 (Severity: low)
193 * 1. Added 3 functions to volume.c :
194 * RSL_add_dbz_offset_to_volume() , RSL_add_dbz_offset_to_sweep(),
195 * RSL_add_dbz_offset_to_ray()
196 * 2. Modified nsig.h , nsig_to_radar.c , volume.c to handle sigmet's
197 * RhoHV and PhiDP fields.
198 * 3. Modified volume.c to fix problem with subsequent calls to
199 * read_these_sweeps()
200 * 4. Modified uf_to_radar.c to compute unambiguous range for
203 *---------------------------------------------------------------------
205 * v1.27 Began 01/11/2000. Released: 2/17/2000 (Severity: low)
207 * 1. Modified files radar_to_hdf_1.c and radar_to_hdf_2.c
208 * to accomodate random ray lengths, eg, Berrimah data.
210 *----------------------------------------------------------------------
211 * v1.26 Began 12/11/1999. Released: 12/21/1999 (Severity: low)
213 * 1. Configuration change for rapic.l and rapic.y.
214 * 2. Changed dependency for rsl.h and wsr88d.h
216 *----------------------------------------------------------------------
217 * v1.25 Began 11/30/1999. Released: 12/10/1999 (Severity: medium)
219 * 1. Merged branch v1.24.1.
220 * 2. Added configure/configure.in/Makefile.in.
221 * 3. Added Makefile.am (automake) and other related files.
222 * 4. Configuration is a snap:
224 * configure --prefix=/some/dir/to/install
227 *----------------------------------------------------------------------
228 * v1.24.1 Began 8/1/1999. Released: 11/30/1999 (Severity: new features)
230 * 1. Introduced radar->h.project[24] -- project name.
231 * 2. Added dorade ingest -- RSL_dorade_to_radar.
232 * 3. Added examples/kwaj_subtract_one_day.c -- fix KWAJEX dates.
233 * 4. Removed rsl_popen/pclose routines from gzip.c. I found
234 * a way to eliminate the 'Broken pipe' message, the message
235 * reappeared in linux 2.2.* series, by flushing the
236 * stream when looking at the magic numbers in anyformat_to_radar.c.
237 * 5. HDF ROUTINES ARE REMOVED. I have moved them to gvs for level_1.
238 * See gvs/src/gvslib/. That's where they live now. The interface
239 * RSL_hdf_to_radar and RSL_radar_to_hdf remain as hooks. If
240 * you have libgvs, then you can specify -DHAVE_TSDIS_TOOLKIT in
243 *----------------------------------------------------------------------
244 * v1.24 Began 6/25/1999. Released: 6/28/1999 (Severity: bug fix)
246 * 1. UF ingest improperly set the Fixed angle.
247 * 2. Removed max_reasonable_dbz (60) from gts.c. The app must decide
248 * what a max allowable dbz is.
250 *----------------------------------------------------------------------
251 * v1.23 Began 3/31/1999. Released: 4/2/1999 (Severity: upgrade)
253 * 1. Added EDGE format ingest. This requires the library ETOR
254 * which is obtained from Enterprise Electronics.
255 * To build this component, set -DHAVE_EDGE in Makefile.
257 *----------------------------------------------------------------------
258 * v1.22 Began 3/4/1999. Released: 3/4/1999 (Severity: bux fix)
260 * 1. Forgot to set the global 'rsl_kdp_wavelen' in nsig_to_radar.c.
262 *----------------------------------------------------------------------
263 * v1.21 Began 02/16/1999. Released: 3/4/1999 (Severity: minor bux fix)
265 * 1. UF code didn't recognize VE, now it does.
266 * 2. RSL_SPEED_OF_LIGHT unifies c throughout the library.
267 * 3. Modification to KDP processing for Sigmet. New
268 * F and INVF functions.
270 *----------------------------------------------------------------------
271 * v1.20 Began 11/12/98. Released: 01/25/1999 (Severity: bug fix/upgrade)
273 * 1. Fixed RADTEC ingest. Does RHI too, but,
274 * RSL doesn't have any good RHI image routines.
276 * 2. Added: RSL_set_color_table
277 * RSL_get_color_table
279 * 3. Added: '-b x' option to any_to_gif. This makes images black below
280 * x dbz. This is a simple noise filter.
281 *----------------------------------------------------------------------
282 * v1.19 Began 9/15/98. Released: 9/23/98 (Severity: bug fix)
284 * 1. Modified file volume.c . New INV_F, _F routines for diff refl.
286 * 2. Created examples/images to hold a base-line set of images
287 * to compare when running 'run_tests'. Modified run_tests
290 *----------------------------------------------------------------------
291 * v1.18 Began 4/28/98. Released: 8/13/98 (Severity: upgrade)
294 * RSL_radtec_to_radar -- in radtec_to_radar.c
295 * RSL_fix_time -- in volume.c
302 * 3. Modified image generation. Images are produced out to 'range'
303 * specified. Each image pixels is no longer 1km, but radius/range.
305 * 4. any_to_gif can now accept range and image size arguments.
307 * 5. RADTEC requires PKWARE routines explode and crc32.
308 * RADTEC is built into RSL, if you specify -DHAVE_PKWARE in
309 * the Makefile. When using RADTEC, you must link your application
310 * staticly; with -static.
312 * Contact PKWARE at 414-354-8699.
314 * 6. Modified radar_to_hdf_1.c. Removed ZDR data from 1C-51 HDF.
316 * 7. Moved HDF_FILE_VERSION definition from toolkit_1BC-51_appl.h
317 * into the application level_1.c
319 *----------------------------------------------------------------------
320 * v1.17 Began 4/23/98. Released: 4/28/98 (Severity: upgrade)
322 * 1. Finally received info regarding KDP (KD_INDEX) for SIGMET.
323 * Assumming the units are similar for LASSEN. Boosted nsig_to_radar
324 * to recognize KDP. It is really KDP * wavelength.
325 * The units are deg*cm/km. You must divide out the wavelength,
326 * if that is desired.
328 * 2. BADVAL/NOECHO mod for nsig_to_radar.c. This should affect
329 * the values that may be stored in any possible UF output.
331 * WTD : lassen_to_radar.c - check the ZDR conversion, if any. Do
335 *----------------------------------------------------------------------
336 * v1.16 Began 3/6/98. Released: 4/21/98 (Severity: bug fix/upgrade)
338 * 1. Changed how any_to_gif output's filenames produced. Now, they
339 * are written to stdout. -v (verbose) and -V (all volume) options
340 * are added. Changed image_gen.c (RSL_volume_to_gif) to output
341 * filenames to stdout.
343 * 2. You really do need 'bison' (GNU yacc), 'flex' (GNU lex) and
344 * make (GNU make) to build this library. This has been true
345 * since v1.15 when I introduced the rapic format. These programs
346 * are superior to those on your stock Unix system, so take the
347 * time to install them.
349 * 3. README explains how to apply patches.
351 * 4. Eliminated the reduce/reduce conflict in rapic.y
353 * 5. Year 2000 compliant.
355 * 6. I forgot the format in sprintf. See rapic.y.
357 *----------------------------------------------------------------------
358 * v1.15 Began 2/20/98. Released: 3/4/98 (Severity: bug fix/upgrade)
360 * 1. Michael Whimpey from BMRC, Australia changed code, for the
361 * different callibrations, between, Pre_mctex, mctex, Gunn_Pt
362 * periods. Please see code where there is m.whimpey. See
365 * 2. Added RAPIC format ingest. RSL_rapic_to_radar.
366 * I used GNU Bison (YACC) and GNU Flex (LEX) to code the RAPIC ingest.
367 * This format is used by the Berrimah radar. See rapic_to_radar.c,
368 * rapic_routines.c, rapic.y, and rapic.l.
369 * Not tested w/ older YACC and LEX found on older Unix systems.
371 * 3. Fixed a bug regarding the reading of stdin streams. Now
372 * you can read compressed or uncompressed files from stdin.
373 * Previously, you couldn't specify NULL as a filename and
374 * have it work reliably in all cases for any file format.
375 * This bug was found by accident and it is nothing you should
376 * be worried about in earlier RSL releases. The reason you need
377 * not worry about it is because 'RSL_anyformat_to_radar' cannot
378 * accept NULL as a filename. For you to notice this, you must
379 * have called the specific ingest routine for the format
380 * being read: RSL_lassen_to_radar, for example.
382 * 4. Bug in the UF ingest. The scale_factor needs to be float.
383 * When it was 'int', round off errors (truncation) were
384 * happening. This affected the Velocity data, only. The reflectivity
385 * data seemed unaffected, because, the magnitude of the values
386 * was high enough to avoid truncation.
387 *----------------------------------------------------------------------
388 * v1.14 Began 2/2/98. Released: 2/3/98 (Severity: upgrade)
390 * 1. Added calibration for Gunn Point radar. Assumes that
391 * the radar name will be 'Gunn_Pt'.
393 *----------------------------------------------------------------------
394 * v1.13 Began 1/16/98. Released: 1/26/98 (Severity: minor bug fix)
398 * 1. radar_to_hdf_1.c: Changed decision algorithm regarding
399 * whether or not to write a VOS into a 1C-51 HDF file.
400 * 1C-51 HDF VOS time_slot status is encoded within the
401 * metaData field 'TK_GEN_DATE_INPUT_FILES'.
403 *----------------------------------------------------------------------
404 * v1.12 Began 1/12/98. Released: 1/12/98 (Severity: minor bug fix)
406 * 1. Changed HDF metadata item for empty granules.
408 *----------------------------------------------------------------------
409 * v1.11 Began 12/17/97. Released: 12/17/97 (Severity: minor bug fix)
411 * 1. Increased the size of pipecmd in RSL_write_gif and TK_MAX_FILENAME to 256.* 2. Modified image_gen.c to increase the data range of Zdr values.
412 * 3. Bug fix in radar_to_hdf_1.c: No longer dumps core for "tiny" sweeps
413 having fewer than 5 rays.
415 *----------------------------------------------------------------------
416 * v1.10 Began 8/27/97. Released: 10/21/97 (Severity: minor upgrade)
418 * 1. Modified ZDR image generation: rsl.h, image_gen.c, ZDR color tables.
419 * 2. Added South Africa data format ingest. Not possible to
420 * interface in RSL_anyformat_to_radar, at this time. The format
421 * is primitive and I need to convert RVPC to dBZ.
422 * 3. Modified HDF component to maintain integrity of anomalous_condition
423 * flags. (RFVAL, APFLAG, NOECHO, BADVAL)
424 * Files: toolkit_1BC-51_appl.h, hdf_to_radar.c, radar_to_hdf_2.c
425 * 4. Modified radar_to_hdf_1.c for TSDIS/DAAC metadata requirements.
426 * 5. Modified any_to_gif.c to output site and date/time for image filenames.
427 * 6. Added QC algorithm parameter. Modified files:
428 * toolkit_1BC-51_appl.h, radar_to_hdf_1.c, radar_to_hdf_2.c,
431 *----------------------------------------------------------------------
432 * v1.9 Began 8/18/97. Released: 8/18/97 (Severity: bug fix)
434 * 1. Mofified radar_to_hdf_1.c : Metadata mods for TSDIS.
436 *----------------------------------------------------------------------
437 * v1.8 Began 7/30/97. Released: 8/05/97 (Severity: upgrade)
439 * 1. Added RSL_read_these_sweeps. Specify specific sweep numbers for
440 * ingest. This drastically speeds up ingest, if you're only interested
441 * in the first or first couple of sweeps. For example, making
449 * mcgill -done. BUT, apparently, mcgill ingest is broken!!!
450 * When did this happen?
452 * 2. Added RSL_load_zdr_color_table();
453 * Includes color tables for this field. See colors/
455 * 3. More HDF mods; more warning messages.
457 * 4. The TRMM Office has fixed several bugs in the TSDIS toolkit.
458 * For proper HDF creation, that conform to TSDIS HDF specifications,
459 * you will need toolkit 4.5r1.1.
461 * Toolkit 4.5r1.1 is an unofficial release; the TRMM office will
462 * pass this out upon request.
464 *----------------------------------------------------------------------
465 * v1.7 Began 7/23/97. Released: 7/25/97 (Severity: bug fix)
467 * 1. Handles corrupt SIGMET files more gracefully.
469 * 2. All lat/lon (degree,minute,second) triplets have the same sign.
470 * Except, if UF, then what ever the file tells me and if they're
471 * not all the same sign, then you'll have
472 * to correct the UF w/ an RSL application. In other words, UF
473 * stores the lat/lon as deg/min/sec and they have their own signs;
474 * Strict UF have deg/min/sec all w/ the same sign, anyway.
476 * 3. Minor changes to HDF component of RSL.
477 *----------------------------------------------------------------------
478 * v1.6 Began 5/02/97. Released: 7/23/97 (Severity: bug fix)
480 * 1. wsr88d_to_radar.c -- Was too permissive. No longer defaults to KMLB.
481 * If unable to establish a valid site based on callID or first_file,
484 * 2. 18 Jul 97 Kolander
485 * Modified radar_to_uf.c & uf_to_radar.c : Fixed some incorrect and
486 * missing sweep and ray header values. Salvaged some numerical precision.
488 * 3. Fixed a time problem in nsig_to_radar.c. Daylight savings time.
490 * 4. Saves lat/lon on each ray for UF.
492 *--------------------
495 * Modifications to radar parameter calulations in:
496 * wsr88d_to_radar.c, wsr88d.h, wsr88d.c, nsig_to_radar.c,
497 * lassen_to_radar.c, rsl.h
499 * Modified HDF-related files:
500 * hdf_to_radar.c toolkit_1BC-51_appl.h
501 * and split file 'radar_to_hdf.c' into two files:
502 * radar_to_hdf_1.c and radar_to_hdf_2.c
503 * Can handle oddly sized and/or corrupt VOSs.
504 *----------------------------------------------------------------------
505 * v1.5 Began 3/17/97. Released: 4/30/97 (Severity: minor upgrade)
507 * 1. Additional error checking in wsr88d.c to warn when number of gates
508 * expected is exceeded.
509 * 2. Changes by Mike Kolander affect the HDF component of RSL. This
510 * version of RSL works with the TSDIS toolkit 4.0.
511 * 3. Changes to carpi and cube functions, see below.
512 *-------------------------
513 * Date: 26 Mar 97 kolander
515 * Files: radar_to_hdf.c, hdf_to_radar.c
516 * Moved QC parameters out of the metadata string into VOS comments
519 * Files: rsl.h, anyformat_to_radar.c
520 * Moved enum File_type definition from anyformat_to_radar.c into
522 *--------------------------
523 * Date: 17 Mar 97 kolander
526 * Changed carpi structure:
527 * Added f, invf fields.
528 * (Carpi_value **)data is now a doubly indexed array 'data[nrow][ncol]'
529 * Changed slice structure:
530 * Added f, invf fields.
531 * (Slice_value **)data is now a doubly indexed array 'data[nrow][ncol]'
532 * Added function prototypes for:
533 * RSL_free_carpi, RSL_free_cube, RSL_free_slice, RSL_new_cube,
534 * RSL_new_slice, RSL_carpi_to_cart, RSL_carpi_to_gif,
535 * RSL_carpi_to_pict, RSL_carpi_to_ppm, RSL_carpi_to_pgm
539 * RSL_free_slice, RSL_new_slice, RSL_new_cube, RSL_free_cube
540 * Modified functions:
541 * RSL_volume_to_cube, RSL_get_slice_from_cube
546 * Modified functions:
547 * RSL_new_carpi, RSL_find_rng_azm, RSL_cappi_to_carpi
551 * (These are modified clones of the sweep image_gen functions.)
552 * RSL_carpi_to_cart, RSL_carpi_to_gif, RSL_carpi_to_pict,,
553 * RSL_carpi_to_ppm, RSL_carpi_to_pgm
555 *----------------------------------------------------------------------
556 * v1.4 Began 12/24/96. Released: 3/7/97 (Severity: bug fix)
558 * 1. Some WSR88D files have a 'radial status' of 28. This is un-
559 * documented. I assume it means some catastrophic reset has occured.
560 * Therefore, the code that counts the number of rays is modified
561 * to rely on the 'ray_num' reported upon reading the file.
562 * Also, I assume that when the status tells me that I'm reading
563 * the 'start of a new elevation' (status == 0) that all subsequent
564 * records will overwrite previously stored rays.
566 * I've seen this status number(28) occur, rarely, in the
567 * WSR88D data. See wsr88d.c.
569 * 2. Removed kwaj component. - Mike.
571 * 3. Installs toolkit_1BC-51_appl.h in INCDIR. This file is needed
572 * only if you plan to use the HDF component.
574 * 4. Fixes a freeing bug in nsig.c. Added member nparams to the
575 * NSIG_Sweep structure to track this for the free routine.
577 * 5. Ray indexing bug fixed in wsr88d_to_radar.c which produced an
578 * invalid time when the first wsr88d ray was null. Basically, using
579 * 'i' instead of 'iray'.
580 *----------------------------------------------------------------------
581 * v1.3 Began 08/26/96. Released: 12/17/96 (Severity: upgrade)
583 * 1. Lassen field 'Zdr' loaded into RSL 'ZD' field, not the RSL 'DR'
584 * field, as originally envisioned within HDF functions. Henceforth,
585 * 'ZD' represents (linear) reflectivity depolarization ratio:
586 * ZD = 10log(Z_horiz/Z_vert) in units dB
587 * as opposed to the circular depolarization ratio.
589 * What exactly are the RSL 'LR' and 'DR' fields??
592 * For consistency of field nomenclature:
594 * Renamed 'CR' to 'CD'. (corrected ZDR for 1C-51)
595 * 'MR' to 'MD'. (1C-51 mask for ZDR)
598 * CD_INVF returns ZD_INVF
600 * 2. Sort by time forgot to compare the hour field. Minor fix.
602 * 3. Fix z_to_r to return proper value.
604 * 4. Lassen ingest: fix the sign of deg/min/sec so they match.
605 * Trusting that the sign of the deg is correct.
607 * 5. Added RSL_select_fields. This reduces memory requirements
608 * upon ingest. You can select, "all" (default), "none" (just to
609 * get header info) or "dz", "vr", ...
617 * kwaj not applicable as it only has DZ.
619 * mcgill not applicable as it only has DZ.
620 * toga not done. If you want to do this, feel free.
622 * 6. Uses 'gzip -1'. This cuts the time for making UF files in half.
624 * 7. Renamed 'makefile' to 'Makefile'
626 * 8. The HDF component has changed drastically and is not compatable
627 * with previous versions. It may change again, contingent upon
628 * the TSDIS toolkit 3.5.2.1 (as of 12/17/96). Expect minor changes
629 * to the HDF component in the future.
631 * 9. Pruning of sweeps and rays now sets moved object pointers to
634 *10. Updated nsig_to_radar.c to check for ant_scan_mode. If mode is
635 * RHI, then return NULL because RSL can't handle RHIs. --Paul
637 *11. Split memory management routines for hdf processing. --Mike K.
638 *----------------------------------------------------------------------
639 * v1.2 Began 08/26/96. Released: 9/6/96 (Severity: minor bug-fix upgrade)
641 * 1. Eliminated zero sized arrays in lassen.h. SGI 'cc' can't
642 * handle zero sized arrays. This brings back the -pedantic
645 * 2. Implemented popen and pclose (called rsl_popen and rsl_pclose)
646 * to eliminate the annoying message 'Broken pipe.' on SGI and HP
649 * 3. The HDF component is incompatable with earlier versions because
650 * of the use of additional fields. It now uses the MASK fields
651 * and calibration information. It should be considered that the
652 * HDF component is in a state of flux.
654 * 4. Minor bug in nsig.c wherein when rays are missing (0 sized)
655 * that not all rays present will be ingested. This is fixed.
657 * 5. Copyrighted the software.
659 * 6. 'anyformat_to_radar' can recognize HDF files.
661 *----------------------------------------------------------------------
662 * v1.1 Began 08/21/96. Released: 08/22/96 (Severity: SERIOUS bug fix)
663 * If you have already upgraded to RSL v1.0.1, then this is a minor
666 * 1. I should have left well enough alone. But, getting rid
667 * of rsl.h.template in favor of only having rsl.h has revealed
670 * THIS BUG IS IN V1.0 ONLY.
672 * The type for 'Range' could be built into
673 * the RSL differently than how your application is built.
674 * For instance, if RSL is built with USE_TWO_BYTE_PRECISION, then
675 * your application will think 'Range' is a one byte storage class,
676 * because the default RSL configuration is to use one byte storage.
678 * This bug slipped through all the tests that I perform and was
679 * discovered only when using the radar_to_hdf component of RSL.
680 * Thanks to Mike Kolander for finding this one.
682 * Configuration instructions are changed so that you must edit
683 * rsl.h to use one byte precision.
685 * 2. All MCTEX fields are recognized and loaded into Radar.
686 * h.f and h.invf are modeled after LASSEN conversion functions.
687 * 3. Added radar_to_hdf.o to makefile.
688 * 4. In examples/any_to_gif.c, outputs all fields.
689 * 5. Three convience arrays are defined in rsl.h.
692 * c. RSL_invf_list[];
693 * Each array is MAX_RADAR_VOLUMES long and contain: strings
694 * representing the field type, a pointer
695 * to the F function, and a pointer to the INVF function.
697 * Usage is conditional by defining USE_RSL_VARS before including
699 * #define USE_RSL_VARS
702 * Normally, you shouldn't worry about this.
704 * 6. Removed -pedantic compile flag because LASSEN code has a 0
705 * sized array -- no warnings.
706 *----------------------------------------------------------------------
707 * v1.0 Began 04/19/96. Released: 8/18/96 (Severity: minor upgrade)
709 * 1. Ignore SIGPIPE when making images.
710 * 2. Can read UF files of MCTEX data. This UF file contains
711 * RH and PH fields. This is LASSEN data that has been converted
712 * to UF via a sun program. It is the LASSEN II format.
713 * 3. Fixed date/time == 0 when calling uf_to_radar multiple times.
714 * The second and subsequent calls produced 0 for the
715 * radar->h.year/month/day and radar->h.hour/min/second.
716 * 4. Always allocate MAX_RADAR_VOLUMES for new radars during ingest.
717 * This will allow one to test any volume index for presence.
718 * 5. Set the default functions to DZ_F. This sets CZ_F correctly.
719 * It is unclear if the other conversion fuctions are properly
721 * 6. Pure UF file ingest bug fixes.
722 * 7. Added RSL_hdf_to_radar - Mike Kolander.
723 * 8. Added RSL_radar_to_hdf - Mike Kolander.
724 * 9. New field type: XZ for X-band Reflectivity.
725 * 10. Working version of nsig_to_radar. - Paul Kucera.
726 * This version works on both big endian and little endian (Linux),
727 * and, for both version 1 and version 2 formats. Version 2
728 * files are generated on big-endian machines (so far, SGI Iris
729 * computers), whereas, Version 1 files were written on
730 * little-endian DEC computers. Two routines are provided:
732 * RSL_nsig_to_radar(char *infile);
733 * RSL_nsig2_to_radar(char *infile);
735 * Nsig ingest can handle nsig files/tapes that were
736 * written on a DEC (little endian) or an SGI (big endian).
737 * It is handled automatically by examination of the 'magic' bytes.
738 * You will note that the byte-ordering in the file is dependant
739 * on which machine wrote the tape or file. The New-SIGMET
740 * documentation does not specify which byte-ordering is to be used
741 * when the file is written.
743 * Re-wrote nsig.c and beefed up nsig.h. Now, there is an
744 * interface to read an entire nsig sweep. You can loop through
745 * the returned sweep and pick your values, and load RSL.
746 * This re-write was done to make reading version 2 files easier.
747 * Additionally, all NSIG code for version 1 and version 2 files
748 * is centrally located in:
752 * To have both versions supported in the same files, I use #ifdef
753 * and the C preprocessor. 'nsig.h' is saturated with #ifdef NSIG_VER2
754 * constructs. Thus, only one source is maintained for both NSIG versions.
756 * 11. Added RSL_print_version();
757 * 12. Added docs for users guide, hdf.
758 * 13. Added html 'grouping by functionality' page.
759 * 14. Restores stdin and stdout when creating pipes.
760 * The pipe readers need to loop until no data available, because
761 * 'read/fread' will not get all the data in one call.
762 * 15. Added moving platform headers to Ray structure:
763 * float pitch; Pitch angle.
764 * float roll; Roll angle.
765 * float heading; Heading.
766 * float pitch_rate; (angle/sec)
767 * float roll_rate; (angle/sec)
768 * float heading_rate; (angle/sec)
769 * float lat; Latitude (degrees)
770 * float lon; Longitude (degrees)
771 * int alt; Altitude (m)
772 * int rvc; Radial velocity correction (units of velocity)
774 * This information typically comes from NSIG. For other formats
775 * the values are all zero.
776 * 16. Read version 1.3 and 1.4 of LASSEN data. RSL_lassen_to_radar.
777 * This means that RSL can read MCTEX data.
778 * 17. Users manual. Walk a novice through a simple example and explain
779 * what header information is important. Teach how to take advantage
781 * 18. Eliminated the #ifeq in makefile. Thus, rsl.h.template is removed
782 * and rsl.h is resurrected.
783 *----------------------------------------------------------------------
784 * v0.45 Began 03/26/96. Froze: 03/27/96 (Severity: minor)
786 * 1. Fixed broken pipe problem on HP and SGI. Cause unknown.
787 * All I did was to remove the pclose in any_format_to_radar.c
788 * It seems that if there is any data left in the pipe that a
789 * SIGPIPE is sent when trying to close the pipe.
790 * On SGI's this causes a core dump. This bug is difficult to
792 * 2. Nsig ingest is severly broken. It always was. Work in
794 * 3. It is important that TSDIS get this version to run on their SGI
795 * as it prevents a core dump. Normally, this shouldn't affect
797 *----------------------------------------------------------------------
798 * v0.44 Began 03/19/96. Froze: 03/19/96.
800 * 1. In prune.c, pointers that are pruned are now set to NULL.
801 * This elimated core dumps associated with trying to free structues.
802 * 2. On gzip-ed UF output, stdout is flushed before the pipe is opened.
803 * 3. Added reverse.c -- Reverse the order of the sweep pointers in
805 *----------------------------------------------------------------------
806 * v0.43 Began 03/01/96. Froze: 03/05/96.
808 * 1. farea.c -- nbins fix.
809 * 2. On UF output, checks for NOECHO.
811 *----------------------------------------------------------------------
812 * v0.42 Began 11/27/95. Froze: 02/16/96.
814 * 1. Removed '#include <strings.h>'.
815 * 2. Added a couple of missing prototypes in rsl.h.template.
817 * Ray *RSL_prune_ray (Ray *ray);
818 * Sweep *RSL_prune_sweep (Sweep *s);
819 * Volume *RSL_prune_volume(Volume *v);
820 * Radar *RSL_prune_radar (Radar *r);
822 * These routine remove dataless substructures. Prompted by
823 * poor NCAR ingest routines for UF files; it is wise to prune
824 * a Radar prior to calling RSL_radar_to_uf. Therefore, if
825 * software cannot read the UF files created by RSL, then try these
826 * prune functions before outputting the UF file. In either case,
827 * RSL_radar_to_uf produces valid UF files.
828 * 4. Removed trigraph in mcgill.c.
829 * 5. Fixed lassen ingest problem on Linux. I think XDR has a bug
830 * where bit fields are not loaded properly. This is a kludge fix.
831 * 6. Removed column.c. Code not mature and takes way too much
832 * RAM. Included in the removal are the vertical structure routines.
833 * The code has been moved to the application (qcwin).
834 * 7. RSL_get_first_ray_of_sweep now returns when the ray number is 1 or
835 * 0. This drasitically speeds the routine.
836 * 8. Increased the UF buffer size from 4096 to 16384.
837 *----------------------------------------------------------------------
838 * v0.41 Began 11/01/95. Froze: 11/20/95.
840 * 1. Minor doc changes. More up to date with implementation.
841 * 2. Implemented 'radar_type' in the radar_header structure. Values
842 * are strings and are: "wsr88d", "lassen", "uf", "nsig", "mcgill",
843 * "kwajalein", "toga".
844 * 3. Increased range of data (internal storage conversion functions)
845 * when using 2 byte storage. Some nsig data can have values below the
846 * default wsr88d function range.
847 * 4. 'farea.c' -- Volumes are used to compute the fractional area.
848 * This matches the latest specification of the function.
849 * 5. Automatically uncompress files. Transparently sets up
850 * a decompression pipe. If the input is not stdin, then 'anyformat_to...'
851 * can peek inside a compressed file and determine what ingest routine to
852 * use. Reading copmressed files from disk and internally uncompressing
853 * them turns out to be the fastest form of ingesting wsr88d (only format
854 * timed) data on my 486. However, I get mixed results on the HP 755.
855 * 'anyformat_to...' uses 'gunzip' to peek inside compressed files.
856 * 6. Can make gzip-ed UF files. The new routine is 'RSL_radar_to_uf_gzip'.
857 * Also, RSL_radar_to_uf_fp takes a file pointer. Thus, you can
858 * define your own output filter.
859 * 7. Added RSL_write_radar_fp, RSL_write_radar_gzip.
860 *----------------------------------------------------------------------
861 * v0.40 Began 10/24/95. Froze: 10/24/95.
863 * 1. Type cast for Sweep_header and Ray_header was removed so that
864 * stock 'cc' on SGI could digest the code. File: column.c. Why?
866 * Version 0.39 was short lived. :-)
867 *----------------------------------------------------------------------
868 * v0.39 Began 7/1/95. Froze: 10/24/95.
870 * 1. Mcgill library is not separate. Included in rsl in whole.
871 * 2. Interpolation routines added.
872 * 3. Added RSL_load_height_color_table -- and the colors/*height.clr
873 * 4. Added RSL_load_rainfall_color_table -- and the colors/*rainfall.clr
874 * 5. Removed RSL_print_{volume,sweep,ray}
875 * 6. Removed some unused routines.
876 * 7. Vertical_structure is its own type composed of Vertical_sweeps and
877 * Vertical_rays (columns).
878 * 8. Added doc/internal_routines.html.
879 * 9. UF is exchangable between big and little endian. Finally, this
880 * has been fixed. Now UF can be generated on little endian machines
881 * and read on big endian (the UF generated is in big endian format even
882 * on the little endian machine). And, visa versa.
883 *10. New version of RSL_get_vertical_structure in column.c. Doc's updated.
884 *11. Fixed bug in radar_to_uf. When the number of actual sweeps (and perhaps
885 * volumes) is less than the determined max of the entire radar structure,
886 * then the pointers may be erroneous. Paul caught this flounder.
887 *12. Added RSL_uf_to_radar_fp. The FILE *fp version of the UF ingest.
888 * Also, passing NULL to RSL_uf_to_radar means to read from stdin.
889 *13. Added NOECHO flag for f and invf. Currently, defined for UF, NSIG and
891 *14. Included source for libraries: wsr88d, lassen, tg, nsig, mcgill,
892 * and kwajlein. Now linking needs only: -lrsl -lm
893 *15. Simplified the configuration procedure. All configuration
894 * is specified from 'makefile'. See README for new install instructions.
895 *16. Removed ray_status, sec_num, atm_att, min_dif, sys_cal from ray
896 * header. These are not used and specific for wsr88d.
897 *17. Summary of routine that handle NULL filenames as STDIN.
898 * RSL_wsr88d_to_radar
899 * RSL_uf_to_radar -- calls --> RSL_uf_to_radar_fp
900 * RSL_lassen_to_radar
903 * RSL_mcgill_to_radar
904 *18. Removed RSL_get_sweep_index_from_volume.
905 *19. Removed RSL_X_ray_indexes. Actually, just renamed the routine
906 * to 'construct_sweep_hash_table'. The hash table retains the hi and
907 * low ray pointers for closest ray comparison. Angle diff's removed.
908 *20. Removed hash table implementation in the Sweep structure. It
909 * is now implemented internally in RSL.
910 *21. BADVAL valued depends on Range type. Picked to be out of range.
912 *----------------------------------------------------------------------
913 * v0.38 Began 6/1/95. Froze 6/29/95.
915 * 1. Makes 2's compliment, instead of 1's compliment, in sweep_to_cart.
916 * 2. Modifications to eth functions.
917 * 3. Added routine RSL_get_column. See column.c.
918 * 4. Added Column data structure.
919 * 5. Static pointer for image generation. Free up image pointer and
920 * reallocate. Otherwise, we've got a memory leak when making many
922 * 6. Added Paul's and Dennis's modifications of the cappi routines.
923 * I modified the cappi structure so that Sweep is a substructure.
924 * This makes image generation and get_value_from_cappi easy to implement.
925 * 7. Added a test program in examples/cappi_image.c to test cappi
927 * 8. Change doc/ for the cappi routines. Routines added/modified are:
928 * float RSL_get_value_from_cappi(Cappi *cappi, float rng, float azm);
929 * int RSL_fill_cappi(Volume *v, Cappi *cap, int method);
930 * void RSL_free_cappi(Cappi *c);
931 * Cappi *RSL_new_cappi(Sweep *sweep, float height);
932 * Cappi *RSL_cappi_at_h(Volume *v, float height, float max_range);
933 * Carpi *RSL_cappi_to_carpi(Cappi *cappi, float dx, float dy,
934 * 9. Carpi structure modified to be compatable with cappi routines.
935 * 10. Added RSL_get_gr_slantr_h. -> range.c
936 * 11. RSL_uf_to_radar only recognizes UF files.
937 * 12. RSL_uf_to_radar handles TRUE UF, 2 and 4 byte record length delimeters.
938 * 13. Minor bug fix in ray_indexes.c to handle RHI input. The number of
939 * hash table entries is now a function of the beam_width and not the
941 * 14. Bug fix in rebin_velocity_sweep. New velocity color tables.
942 * 'examples/qlook.c' added. Yet another image generation program;
944 * 15. RSL_uf_to_radar allocated additional space for sweeps, when the
945 * initial allocation is not enough.
946 * 16. Added a programmers guide. See programmers_guide.html.
947 * 17. Get_closest routines removed.
948 * 18. Added RSL_kwaj_to_radar. -- Mike Kolander.
949 * 19. Added docs for RSL_kwaj_to_radar.
951 * Note: Since v0.37 we've been using h.f and h.invf for the storage
952 * functions and, thus, the library is not compatable with earlier
953 * versions. All subsequent version are, however, compatable.
954 * This means, code that used v0.36 and earlier will break (not
955 * even link) with v0.37 or later.
958 * ray->h.f(ray->range[i]) instead of F(ray->range[i])
960 * ray->h.invf(x) instead of INVF(x).
962 *----------------------------------------------------------------------
963 * v0.37 Began 5/24/95. Froze 5/29/95.
965 * 1. Removed RSL_float_to_char; too specific.
966 * 2. Implemented seperate conversion functions for each field type.
967 * This added h.f and h.invf to Volume, Sweep and Ray headers.
968 * The ingest routines optionally define there own conversion function.
969 * Most of the time, though, I use the default: wsr88d conversions.
970 * Tested: wsr88d, lassen, mcgill, UF, rsl.
971 * Coded but not tested: toga, nsig.
972 * 3. Added ETH routines:
973 * Sweep *RSL_get_eth_sweep(Volume *v,float et_point);
974 * float RSL_get_echo_top_height(Volume *v,float azim,float grange, float et_point);
975 * 4. If using #define USE_TWO_BYTE_PRECISION, uses 100 as a storage
976 * factor. Now, there is no loss of precision when converting between
977 * internal and float. Before there was just a minor round off when
978 * using any data that used anything other than 1/2 dbz precision.
979 * Using 100 is more than enough.
980 *----------------------------------------------------------------------
981 * v0.36 Began 5/19/95. Froze 5/19/95.
983 * 1. Magic in anyformat_to_radar was slightly different than expected
984 * for lassen data. Tested on lassen data.
985 * 2. DEFAULT is to use 2 byte storage precision. See rsl.h.
986 * 3. Several changes to get_closest routines -- Flanigan.
988 *----------------------------------------------------------------------
989 * v0.35 Began 5/18/95. Froze 5/18/95.
991 * 1. Checks iazim validity in ray_indexes.c. Bad angles use to cause
993 * 2. wsr88d_to_radar can handle bogus filenames and callid's.
995 *----------------------------------------------------------------------
996 * v0.34 Began 5/17/95. Froze 5/18/95.
998 * 1. Modified the bscan interface.
1000 * 2. Fixed a minor nrays bookkeeping bug in radar_to_uf.
1002 * 3. Updated Sweep searching routines.
1004 * 4. Added get_closest and get_next_closest ray searching routines.
1005 * Updated RSL_get_ray_from_sweep so that it uses the
1006 * new_get_closest function.
1008 *----------------------------------------------------------------------
1009 * v0.33 Began 5/12/95. Froze 5/16/95.
1011 * 1. Configure for building using 2 byte precision instead of 1 byte.
1012 * This should quell any accuracy problems associated with the
1013 * functions F and INVF.
1015 * 2. Added 'RSL_mcgill_to_radar'. Link with -lmcgill.
1017 * 3. Bug fix in cube.c, cappi.c, and carpi.c.
1018 *----------------------------------------------------------------------
1020 * v0.32 Began 5/5/95. Froze 5/12/95.
1022 * 1. Compiles with -Wall -ansi -pedantic.
1023 * 2. Minor bug fixes in get_win.c
1024 * 3. Compiles on SGI, 486, SUN, HP using gcc or stock cc.
1025 *----------------------------------------------------------------------
1026 * v0.31 Began 4/28/95. Froze 5/5/95.
1028 * 1. Added ray_high and ray_low Azimuth_hash pointers
1029 * to Azimuth_hash data structure and code in the
1030 * the routine RSL_sweep_ray_indexes to set these
1031 * pointers. ray_low points to the Azimuth_hash
1032 * with the next lowest ray_angle, with ray_high
1033 * points to the next highest.
1035 * 2. Created internal routine dir_angle_diff. Returns
1036 * negitive difference if the second angle in
1037 * the parameter list is counter-clockwise to the
1038 * first angle. Returns positive is second
1039 * angle is clockwise tk first angle.
1041 * 3. Added internal routine the_closest_hash. This
1042 * routine returns the an Azimuth_hash
1043 * data structure that contains the closest
1044 * ray to the requested angle.
1046 * 4. Added two routines: RSL_get_closest_ray_from_sweep and
1047 * RSL_get_next_closest_ray_from_sweep.
1049 * 5. Added routines: RSL_get_window_from_radar,
1050 * RSL_get_window_from_volume, RSL_get_window_from_sweep, and
1051 * RSL_get_window_from_ray.
1053 * 6. Modified farea.c.
1054 * 7. Isolated contruction of azimuth table linked list.
1055 * 8. Fixed get_sweep NULL sweep reference (See patch v0_29_3 also).
1056 * 9. Compiles on HP CC, SGI CC, GNU CC. I had to #ifdef the
1057 * varargs declaration in anyformat_to_radar.c. Why?
1058 * 10. Added examples/killer_sweep.c. This randomizes the azimuth
1059 * values of each ray. The output checks the sortedness of the
1060 * hi and low links in the hash table.
1061 * 11. Added doc/...closest... doc/...next_closest...
1063 *-------------------------------------------------------------------------
1064 * v0.30 Began 4/20/95. Froze 4/27/95
1066 * 0. IMPORTANT: Renamed libradar.a to librsl.a. Also, radar.h to rsl.h.
1067 * 1. Removed NOTFOUND_H reference in the get_ray function.
1068 * 2. Simplified get_sweep.
1069 * 3. Uses within 1/2 beam_width test in get_ray_from_sweep.
1070 * 4. Checks -1 and +1 bin in azimuth hash table to really find the
1071 * closest ray that is within 1/2 beam_width of the target azim.
1072 * Surprisingly, it shortened the get_value_from_sweep routine.
1074 * 5. Added anyformat_to_radar.c. Uses magic information to determine
1075 * the file format. Handles: UF, RSL, WSR88D, LASSEN. Toga may
1076 * be difficult. Unknown, yet, for NSIG. Alan will get me that
1078 * 6. Added beam_width to the ray structure.
1079 *-------------------------------------------------------------------------
1080 * v0.29.1 Began 4/18/95. Froze 4/18/95.
1082 * 1. Bug fix in endian.c. Needed to initialize the word.val to 0.
1083 * 2. Bug fix in radar_to_uf.c. little_endian() call.
1084 * 3. Added Azumuth_hash to structure list in doc/.
1085 * 4. Other minor changes.
1086 *-------------------------------------------------------------------------
1087 * v0.29 Began 3/1/94. Froze ??/??/??
1089 * 0. Thanks to Dennis Flanigan for helping with this release.
1091 * 1. Modified sort_rays.c. By Dennis Flanigan, Jr.
1092 * a. Added h.sorted_flag to Volume and Sweep header structures.
1094 * b. Added routines:
1095 * int ray_sort_compare_by_time(Ray **r1,Ray **r2);
1096 * int sweep_sort_compare(Sweep **s1, Sweep **s2)
1097 * Sweep *RSL_sort_rays_by_time(Sweep *s);
1098 * Volume *RSL_sort_sweeps_in_volume(Volume *v)
1099 * Volume *RSL_sort_volume(Volume *v)
1100 * Radar *RSL_sort_radar(Radar *r)
1102 * c. Routines that sort data structures now set the
1103 * number of structures in the parent data structure.
1105 * d. Fixed: nsweeps was not being set correctly by
1106 * RSL_sort_sweeps_in_volume.
1108 * 2. Removed sort calls in the ingest routines: (whatever)_to_radar.
1110 * 3. Removed the auxillary trig tables in image_gen.c. It's just a
1113 * 4. Changed the extension of the tar archives to .tgz. This
1114 * allows netscape to ftp the file rather than displaying it :-)
1116 * 5. Added variables in the sweep data structures to represent
1117 * the half of the beam width angles. These variables are
1118 * vert_half_bw and horz_half_bw. Also added code to all
1119 * RSL ingest routines (something_to_radar) to set these values.
1120 * The half angle values are used in the volume.c searching routines.
1122 * 6. Added h.indexes to Sweep structure. This is a simple hash
1123 * table for making azimuth lookup cake. So far, I've only
1124 * got the malloc part placed in the routines that create the
1125 * radar structure. Added the file 'ray_indexes.c'. This changes
1126 * RSL_get_value_from_ray.
1133 * RSL_sort..??? really???
1135 * RSL_{write,read}_radar
1139 * RSL_sweep_struct.html
1143 * 8. Added CHECK_LIST.
1145 * 9. Changed the name from radar-v0.?? to rsl-v0.??.
1148 *-------------------------------------------------------------------------
1149 * v0.28 Began 7/23/94. Froze 2/16/95
1152 * 1. Support for little endian machines (*86 PC's using Linux).
1153 * Includes 'endian.c' in 'uf_to_radar.c' and 'radar_to_uf'. It is not
1154 * needed in 'lassen.c' because that program uses xdr to transfer the
1155 * data. Nor is it required in 'wsr88d_to_radar.c', 'nsig_to_radar.c'
1156 * nor 'toga_to_radar.c' because the support for little endian is in
1157 * the respective libraries: libwsr88d.a, libnsig.a, libtg.a.
1165 * In order to make this library compatable with versions on either
1166 * big endian or little endian machines, it will be adopted that all
1167 * output will be in big endian format. Little endian machines will
1168 * have to do the extra work of swapping bytes upon input as well as
1169 * swapping bytes on output. I could adopt to use the xdr library,
1170 * however, it seems too complicated for the simple task of always
1171 * guarenteeing that the output is in big endian format. After all,
1172 * we only support one output format: UF. (Well, we will make our own
1173 * radar format output in big endian format too, but we keep that
1174 * knowledge hush hush).
1176 * 2. Documentation in the seperate directory complete for all routines
1177 * in the RSL. Documentation froze at v0.27 and is in HTML format.
1178 * The documentation version number will be updated to match the version
1179 * number of the most current release of RSL. Note: The live link is
1180 * in /PUBLIC/httpd/htdocs/trmm_office/software/radar/quick_reference.
1181 * It is a symbolic link to ~/proj/trmm/radar/doc/v0.xx.
1183 * 3. Added RSL_ prefix to all documentation. This renamed the HTML files
1184 * to begin with RSL_, also.
1186 * 4. Prefixed all routines with RSL_. Status is that it builds.
1187 * 5. Combined radar.h, cube.h and volume.h into radar.h.
1189 *-------------------------------------------------------------------------
1190 * v0.27 Began 7/23/94. Froze 9/13/94.
1193 * 1. Beam width calculation in get_value_from_sweep is not 1/2 on either
1194 * side. No provision for best fit. See WTD #2.
1195 * 2. Added sort_rays.c. Sort rays in a sweeps and volumes.
1196 * 3. Added Vset_earth_radius. Set global variable 'Re' (Default: 4/3R).
1197 * 4. Added trig modification of get_slantr_and_h.
1198 * 5. Added sort rays call to: toga_to_radar, wsr88d_to_radar,
1199 * uf_to_radar, lassen_to_radar.
1200 * 6. Added cube.c. By Mike Kolander.
1202 * 8. Added toga_to_radar.c. By Mike Kolander.
1203 * 9. Signed all source files.
1204 * 10. Quieted some image print statements. See image_gen.c.
1205 * 11. Changed wsr88d_to_radar so it takes 'first_file' or the 4 character
1206 * call sign (eg. KMLB).
1207 * 12. Fixed makefile so it removes libradar.a before building. This prevents
1208 * duplicate object files, only the long filenamed ones, from
1209 * appearing in the archive file.
1210 * 13. Added gts.c. By Dave Wolff.
1211 * 14. Fixed minor round off error in 'uf_to_radar' which caused a 0 dBZ spike.
1212 * 15. Added histogram.c. By Dave Wolff.
1213 * 16. Added nsig_to_radar.c. By Alan McConnell.
1218 * 2. Vget_value_from_sweep. When the beam width is increased we
1219 * want to return the value that is the best fit for a ray and not
1220 * just the first fit. Currently when the beam width is really
1221 * large then we will pick the wrong beam for the desired point.
1223 * 3. Add the following to the ray header:
1225 * - offset for azim, range, elev (for moving radar)
1226 * - lat/lon (for moving radar)
1228 * 4. Bilinear interpolation.
1229 * 6. Modify get_ray_above to return a good ray so that QC doesn't zap points
1231 * 7. Optimize/Improve the get_value routine.
1232 * 8. Remove V prefix to routine names?
1233 * 10. Fix why there are bands of missing data when making images.
1234 * 11. Specify resolution when making images.
1235 * 14. Update: doc's (in HTML), README, etc.
1236 * 16. NEED *TESTING* suite of programs.
1238 * Proposed changes for v0.28
1239 * 1. Add support for little endian machines (386, 486, etc.)
1240 * 2. F(x, DZ) or ray->f.dz(x). I.e., object function conversion functions.
1243 *-------------------------------------------------------------------------
1244 * v0.26 Began 7/23/94.
1246 * 1. Adding cappi_to_carpi.
1247 * 2. Enhanced the Cappi structure; not the same as a sweep anymore.
1249 *-------------------------------------------------------------------------
1250 * v0.26 Began 7/13/94. Froze 7/20/93.
1252 * 1. Units for wavelength, in radar_to_uf, changed from meters to cm;
1253 * as they should be.
1254 * 2. Library runs quietly. No noisy print statements. Call
1255 * radar_verbose_on() and radar_verbose_off() to control printing.
1256 *-------------------------------------------------------------------------
1257 * v0.25 Began 7/1/94. Froze 7/1/94
1259 * 1. Modifications to makefile to add portibility to building on
1260 * other systems w/o gcc. Change to CFLAGS.
1262 * 3. Moved documents radar.ez and volume.ez to ../doc (../doc_RCS).
1263 * This means that the version of the documentation will not be kept
1264 * up to the version of the RSL library. Only changes to the doc. will
1265 * force a new version of the documentation. I'll want to see if this
1267 *-------------------------------------------------------------------------
1268 * v0.24 Began 6/29/94. Froze 6/29/94
1270 * 1. radar_to_uf, uf_to_radar. Fixed inconsistant use of BADVAL vs.
1271 * UF_NO_DATA. The latter is check and used.
1272 * 2. Added function:
1273 * float get_nyquist_from_radar(Radar *radar);
1274 * Useful, for loading non-velocity fields with PRF, PRT and NYQUIST.
1275 * 3. Made the makefile more general and added comments.
1278 * 1. Modify wsr88d_to_radar to fill PRF, PRT and NYQUIST values in
1279 * non-velocity rays.
1280 *-------------------------------------------------------------------------
1281 * v0.23 Began 6/27/94. Froze 6/27/94
1283 * 1. First distribution release.
1284 * 2. Added README w/ installation instructions.
1285 * 3. Made example_main and colors directories.
1286 * 4. Shortened lassen.h to be close to minimial.
1287 * 5. Modified makefile to only make libradar.a. Example_main/ has it's
1289 *-------------------------------------------------------------------------
1290 * v0.22 Began 6/24/94. Froze 6/24/94
1292 * 1. radar_to_uf/uf_to_radar PRF/PRT calculation corrected.
1294 *-------------------------------------------------------------------------
1295 * v0.21 Began 6/24/94. Froze 6/24/94
1297 * 1. radar_to_uf: prf now in microseconds.
1298 * 2. uf_to_radar: prf now converted from microseconds to seconds.
1300 *-------------------------------------------------------------------------
1303 * Need to determine the changes.
1304 *-------------------------------------------------------------------------
1305 * v0.19 Began 6/17/94. Froze: 6/17/94.
1307 * 1. Fixed NULL access in write_radar subroutine.
1309 *-------------------------------------------------------------------------
1310 * v0.19 Began 6/15/94. Froze: 6/15/94.
1312 * 1. Check for NULL in Vget_ray_from_sweep fixes a segmentation fault on
1314 *-------------------------------------------------------------------------
1315 * v0.18 Began 6/11/94. Froze: 6/12/94 2pm.
1317 * 1. Minor changes in volume.c. Vget_value_from_sweep now uses the
1318 * beam_width for matching rays. See Vget_sweep too.
1319 * 2. cappi.c sets the beam_width.
1320 * 3. Added radar types. There is no sure fire way to set
1321 * radar->h.radar_type to one of these values automatically, ie. from
1322 * information in the input file. It may have to be done by the
1323 * application; a runtime parameter, option.
1325 * TOGACOARE_TOGA_SIGMET
1326 * TOGACOARE_MIT_SIGMET
1327 * TRMM_DARWIN_LASSEN
1328 * DARWIN_TOGA_SIGMET
1329 * TRMM_MELBOURNE_WSR88D
1330 * TRMM_KWAJALEIN_SIGMET
1331 * TRMM_HOUSTON_WSR88D
1332 * 4. Added function:
1333 * Sweep *Vget_first_sweep_of_volume(Volume *v);
1334 * 5. Placed the wsr88d code in wsr88d_to_radar.c (removed from radar.c).
1337 * 1. Rework Vget_value_from_sweep to do a better search for the value.
1339 *-------------------------------------------------------------------------
1340 * v0.17 Began 6/10/94. Froze 6/10/94 3:30pm.
1342 * 1. Corrected the pulse width calculation in uf_to_radar and in
1344 *-------------------------------------------------------------------------
1345 * v0.16 Began 6/10/94. Froze 6/10/94 12:30pm.
1347 * 1. Minor changes to radar.c because v1.3 of the wsr88d library is
1348 * now using WSR88D_DZ, WSR88D_VR, WSR88D_SW as the field type mask.
1349 * REFLECTIVITY, VELOCITY and SPECTRUM_WIDTH are not used.
1351 *-------------------------------------------------------------------------
1352 * v0.15 Began 6/7/94. Froze 6/7/94 1pm.
1354 * 1. Discovered that the range to bin1 calculation in radar_to_uf.c and
1355 * uf_to_radar.c was incorrect. See fh[2] and fh[3].
1357 *-------------------------------------------------------------------------
1358 * v0.14 Began 6/2/94. Froze 6/2/94 1pm.
1360 * 1. Modified the date for the Radar structure for UF reading to reflect
1361 * the time of the first ray. It was the generation time of the radar
1362 * structure, however, Dave Wolff insists that it reflect the time of
1363 * the first ray. Modification to 'uf_to_radar.c'
1365 *-------------------------------------------------------------------------
1366 * v0.13 Began 6/2/94. Froze 6/2/94 11am.
1368 * 1. Modified radar_to_uf.c to undo the faking of the headers. This is
1371 *-------------------------------------------------------------------------
1372 * v0.12 Began 5/31/94. Froze 5/31/94 7pm.
1374 * 1. Check for malloc errors in Vnew* routines.
1375 * 2. Fixed a nasty bug in radar_to_uf. I was letting 'j' get to high
1376 * for a particular ray in a sweep. 'j' is looping on the maximum
1377 * rays possible. I noticed this bug only after Vcopy_volume to
1378 * replace a radar->v[i].
1379 *-------------------------------------------------------------------------
1380 * v0.11 Began 5/27/94. Froze 5/27/94 12:50pm.
1382 * 1. Modified radar_to_uf.c to fake header information when fields do
1383 * exist, eventually, but not in the current sweep. This is to allow
1384 * brain dead UF ingestors (Zeb, RDSS, etc.) to read the UF file; they
1385 * assume that whatever fields exist in the first UF sweep is constant
1386 * throughout the file.
1388 * 2. Added functions to volume.c
1389 * Ray *Vget_first_ray_of_sweep(Sweep *s);
1390 * Ray *Vget_first_ray_of_volume(Volume *v);
1392 *-------------------------------------------------------------------------
1393 * v0.10 Began 5/26/94. Froze 5/27/94 9am.
1395 * 1. Modified the names of the INDEX and MASK variables.
1397 * ZT Total Reflectivity (dBZ) ZT_INDEX
1398 * May be uncommon, but important
1400 * DZ Reflectivity (dBZ), may contain some DZ_INDEX
1401 * signal-processor level QC and/or
1402 * filters. This field would contain
1403 * Darwin's CZ, or WSR88D's standard
1404 * reflectivity. In other words, unless
1405 * the field is described otherwise, it
1406 * should always go here. In essence, this
1407 * is the "cleanest" reflectivity field
1410 * DR Differential reflectivity DR_INDEX
1411 * DR and LR are for dual-polarization
1412 * radars only. Unitless or in dB.
1414 * LR Another form of differential ref LR_INDEX
1415 * called LDR, not sure of units
1417 * CZ QC Reflectivity (dBZ), contains
1418 * post-processed QC'd data CZ_INDEX
1420 * VR Radial Velocity (m/s) VR_INDEX
1422 * SW Spectral Width (m2/s2) SW_INDEX
1424 * 2. Fixed some MAX_RADAR_VOLUMES references in the wsr88d_to_radar code.
1426 *-------------------------------------------------------------------------
1427 * v0.9 Began 5/25/94. Froze: 5/26/94, 10am.
1429 * 1. Added lassen_to_radar.c
1432 *-------------------------------------------------------------------------
1433 * v0.8 Began 5/23/94. Froze: 5/24/94, 10am.
1435 * 1. F and INVF handle APFLAG.
1436 * 2. Image generation creates unsigned char images.
1437 * 3. 255-val for negative dBz (val < 0).
1439 *-------------------------------------------------------------------------
1440 * v0.7 Began 4/30/94. Froze: 5/20/94.
1444 * 1. Uses char storage for data values, to reduce RAM allocation.
1446 * 2. F(x) ((x-2)/2. - 64.)
1447 * 0 is for BADVAL. Bad value.
1448 * 1 is for RFVAL. Range folded.
1450 * 3. Added functions:
1451 * Vfloat_to_char(float *x, unsigned char *c, int n);
1452 * float F(unsigned char c);
1453 * unsigned char INVF(float x); -- Inverse of F.
1454 * Radar *uf_to_radar(char *infile);
1455 * void radar_to_uf(Radar *radar, char *outfile);
1457 * 4. Minor bug fix in wsr88d_to_radar routine. It was setting the
1458 * number of volumes to six even though we were only asking for 3.
1460 * 5. Changed the value of BADVAL to 0500 (Octal 500). This is
1461 * a value higher than 255 (the maximum byte value) but small enough
1462 * to that when a scale factor (typically 100) is applied, the result
1463 * does not exceed the I*2 (short) magnitude. I needed this for the
1464 * UF programs. I could have tested for BADVAL, RFVAL, etc., and not
1465 * applied a scale factor when loading the UF buffer, however, changing
1466 * BADVAL and scaling everything was more general.
1468 * 6. Made some slight modifications to the Radar header and Volume header.
1470 *-------------------------------------------------------------------------
1471 * v0.6 Began 4/16/94. Froze: 4/30/94.
1475 * 1. Azimuth angles range from -180,180 to 0,360.
1476 * 2. New color index binning function for velocity. -nyquist,nyquist
1477 * using 15 bin values. See Vrebin_velocity_sweep.
1478 * 3. Added the following routines:
1480 * Memory management.
1481 * Ray *Vcopy_ray(Ray *r);
1482 * Sweep *Vcopy_sweep(Sweep *s);
1483 * Volume *Vcopy_volume(Volume *v);
1484 * Radar *clear_radar(Radar *r);
1485 * void Vget_groundr_and_h(float slant_r, float elev, float *gr, float *h);
1486 * void Vget_slantr_and_elev(float gr, float h, float *slant_r, float *elev);
1487 * void Vget_slantr_and_h(float gr, float elev, float *slant_r, float *h);
1489 * Image generation preparation.
1490 * void Vrebin_velocity_ray (Ray *r); /* Modifies r */
1491 * void Vrebin_velocity_sweep (Sweep *s); /* Modifies s */
1492 * void Vrebin_velocity_volume(Volume *v); /* Modifies v */
1494 * Color table functions.
1495 * void load_red_table(char *infile);
1496 * void load_green_table(char *infile);
1497 * void load_blue_table(char *infile);
1499 * 4. Added 4/3Re calculation to Vget_slantr_and_elev and Vget_groundr...
1500 * 5. Checked for null in the Vclear routines.
1502 *-------------------------------------------------------------------------
1507 * 1. Color table functions taken out of the image routines.
1508 * You must call load_refl_table(), load_vel_table(), load_sw_table()
1509 * to load the appropriate color table before making color images.
1510 * There are seperate color tables for R, V, S. See volume.h.
1512 * 2. Range is now used in Vsweep_to_cart.
1513 * 3. Gate size (pixel resolution in km) is now used.
1514 * 4. Added range to cappi_at_h function. It is the effective range.
1515 * 5. Added the following routines:
1517 * Read radar from disk.
1518 * Ray *read_ray (FILE *fp);
1519 * Sweep *read_sweep (FILE *fp);
1520 * Volume *read_volume(FILE *fp);
1521 * Radar *read_radar (char *infile);
1523 * Write radar to disk
1524 * int write_ray (Ray *r, FILE *fp);
1525 * int write_sweep (Sweep *s, FILE *fp);
1526 * int write_volume(Volume *v, FILE *fp);
1527 * int write_radar (Radar *r, char *outfile);
1530 * float Varea_of_ray(Ray *r, float lo, float hi, float range);
1531 * float Vfractional_area_of_sweep(Sweep *s, float lo, float hi, float range);
1534 * Vfraction_of_ray(Ray *r, float lo, float hi, float range);
1535 * Vfraction_of_sweep(Sweep *s, float lo, float hi, float range);
1536 * Vfraction_of_volume(Volume *v, float lo, float hi, float range);
1539 * 6. radar.c calls wsr88d_get_site to get additional wsr88d information
1540 * not included in the file. Routines compliments of Dan Austin.
1541 * 7. Added RFVAL. Range Folded value. Any base data value of 0 is
1542 * data below SNR thresholds set for that specific base data. Any
1543 * data value of 1 is data considered range ambiguous (folded).
1544 * A color table entry needs to be picked to represent this value.
1547 * o I have to do something about MAX_RADAR_VOLUMES. We really should
1548 * rely on radar->h.nvolumes;
1550 * o Add 4/3Rearth calculation to get value routines.
1551 * o Incorporate nsig_to_radar. Dennis Flanigan is writing that interface.
1552 * o Add fraction of area function.
1553 * o Add the following functions: ??? really ???
1554 * Sweep *Vget_closest_sweep(Volume *v, float elev);
1555 * Ray *Vget_closest_ray(Sweep *s, float azim);
1556 * float Vget_closest_value_in_beam(Ray *ray, float range);
1557 * float Vget_closest_value(Ray *ray, float range);
1558 * (I'm not sure how this will be different than Vget_value)
1560 * o Sort the rays so locating azimuth is trivial; instead of a search
1561 * algorithm as it is now. Hey, would a binary search be good enough or
1562 * do we need some hashing function? Is the lookup fast enough already?
1563 * o Add CAPPI at h. (Option for bilinear interpolation about h).
1564 *-------------------------------------------------------------------------
1565 * v0.4 Began 3/23/94 Froze: 4/7/94
1569 * 1. Made Sweep (sweep) and Ray (ray) members an array of pointers.
1570 * This changes the syntax of the access to be
1571 * v->sweep[is]->ray[ir]->range[ibin] instead of
1572 * v.sweep[is].ray[ir].range[ibin]. The benifit of this is to
1573 * be able to dynamically specify the number of sweeps or rays,
1574 * even volumes for the Radar structure, and not allocate a maximum.
1575 * This makes Vnew_sweep and Vnew_ray useful.
1577 * 2. Added the following functions:
1578 * Volume *Vget_volume(Radar *r, int itype);
1579 * itype = REFLECTIVITY, VELOCITY, or SPECTRUM_WIDTH, etc.
1581 * Sweep *Vget_sweep(Volume *v, float theta);
1582 * Ray *Vget_ray (Volume *v, float theta, float azimuth);
1583 * float Vget_value(Volume *v, float theta, float azimuth, float range);
1584 * Ray *Vget_ray_from_sweep(Sweep *s, float azimuth, float range);
1585 * float Vget_value_from_sweep(Sweep *s, float azimuth, float range);
1586 * float Vget_value_from_ray(Ray *r, float range);
1587 * float Vget_value_at_h(Volume *v, float azim, float grnd_r, float h);
1589 * Ray *QC_ray (Ray *ray, int radar_type);
1590 * Sweep *QC_sweep (Sweep *sweep, int radar_type);
1591 * Volume *QC_volume(Volume *volume, int radar_type);
1593 * Radar *QC_radar (Radar *radar);
1595 * void write_gif(char *outfile, char *image, int xdim, int ydim, char c_table[256][3]);
1596 * void write_pict(char *outfile, char *image, int xdim, int ydim, char c_table[256][3]);
1597 * char *Vsweep_to_cart(Sweep *s, int xdim, int ydim, float range);
1598 * void Vsweep_to_gif(Sweep *s, char *outfile, int xdim, int ydim, float range);
1599 * void Vsweep_to_pict(Sweep *s, char *outfile, int xdim, int ydim, float range);
1600 * void Vvolume_to_gif(Volume *v, char *basename, int xdim, int ydim, float range);
1601 * char *Vsweep_to_cart(
1602 * 3. When a sweep does not have any rays with any bins, then NULL is
1603 * assigned to that Sweep pointer. This occurs for reflectivity for
1604 * the 2-nd sweep index (as defined by the data) where the is no
1605 * reflectivity data, only doppler and spectrum width. Velocity and
1606 * spectrum width data do not exist for sweep number 1 (index 0).
1608 * 4. Speed ups in Vto_cart_sweep. Math is precomputed and saved in
1609 * arrays for faster lookup. Still the ppmtogif is a snail and it
1610 * overwhelms the runtime. I only saw a 35 second improvment with
1611 * these new arrays when outputting 20 gif images. I think the -O
1612 * compile flag is doing a good job.
1614 * 5. Added CAPPI at h. Routine in cappi.c. Cappi type is syntatically
1615 * identical to the Sweep type.
1617 * Cappi *cappi_at_h(Volume *v, float h);
1619 * 6. Make builds libradar.a which contains radar.c, volume.c, cappi.c and
1620 * image_gen.c. Builds on SGI, SUN and HP.
1622 * 7. Add QC routines. See 2. above for the list. Currently they are
1623 * place holding functions with only QC_ray needing to be coded.
1624 * Paul Kucera will take care of that.
1626 * 8. Improvments to radar.ez and volume.ez.
1629 * o Add the following functions:
1630 * Sweep *Vget_closest_sweep(Volume *v, float elev);
1631 * Ray *Vget_closest_ray(Sweep *s, float azim);
1632 * float Vget_closest_value_in_beam(Ray *ray, float range);
1633 * float Vget_closest_value(Ray *ray, float range);
1634 * (I'm not sure how this will be different than Vget_value)
1636 * o Add range resolution to the image generation subroutines.
1637 * o Add range resolution to all the 'get_value' routines.
1638 * o Sort the rays so locating azimuth is trivial; instead of a search
1639 * algorithm as it is now. Hey, would a binary search be good enough or
1640 * do we need some hashing function? It the lookup fast enough already?
1641 * o Add CAPPI at h. (Option for bilinear interpolation about h).
1643 *-------------------------------------------------------------------------
1644 * v0.3 Began 3/22/94 Froze 3/23/94.
1647 * 1. Implimented the Radar structure. The heart of it is an array of
1649 * 2. Using 'data_mask' which is a bitwise ( | operator in C ) of
1650 * REFL_MASK, VEL_MASK, or SW_MASK, you can get any field type volume:
1651 * reflectivity, doppler velocity, or spectrum width respectively.
1652 * 3. Load volume, sweep and ray header information.
1653 * 4. Added Radar header information; need a good definition of say date and
1657 * - Improve carteasean image generation.
1658 * Input: radar range, pix_width, pix_height. No distortion.
1659 * - Need to specify the output GIF filename as options.
1660 * - Incorporate Vto_fraction (?? name ??) Dave's new function.
1661 *-------------------------------------------------------------------------
1662 * v0.2 Began 3/21/94 Froze 3/22/94.
1664 * I am freezing this here because both BSCAN and CARTESEAN image generation
1665 * works. You have to hand edit the source to restrict the number of
1666 * Sweeps that are converted to images, currently only sweep 0. The inclusion
1667 * of sweep/ray header information and the collection of doppler and spectrum
1668 * width data requires substantial effort and will be in the next version.
1669 * This version freeze is a check point.
1672 * 1. Name rsphere change to volume.
1673 * 2. File rsphere.c changed to volume.c. (Moved the RCS file rsphere.c,v
1674 * to the graveyard directory in RCS/
1675 * 3. Added color gif support. Reads red.clr, green.clr, blue.clr files.
1676 * This renamed the Vto_cart_pgm function to Vto_cart_gif. It is likely
1677 * that ppm support is not needed. We'll see.
1678 * 4. Fixes minor glitches in output images where the tan is undefined.
1679 * 5. Added BSCAN production as GIF files.
1680 * 6. Output sweep.xx file names; sweep.00.gif, etc. and bscan.00.gif too.
1683 * - Add routines to get volumes for doppler and spectrum width. (Radar lib?)
1684 * - Improve carteasean image generation.
1685 * Input: radar range, pix_width, pix_height. No distortion.
1686 * - Add sweep header information.
1687 * - Need to specify the output GIF filename as options.
1688 * - Incorporate Vto_fraction (?? name ??) Dave's new function.
1690 *-------------------------------------------------------------------------
1691 *v0.1 3/21/94 by John Merritt.
1692 * 1. First development version of the radar and rsphere library.
1693 * Includes test driver. radar.ez and rsphere.ez document the
1694 * functionality of the programs. This version exists to check point
1696 *-------------------------------------------------------------------------