1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
|
/*
* Copyright (c) 1999-2003 Smithsonian Astrophysical Observatory
*/
#include <funtoolsP.h>
/*
*
* private routines
*
*/
/*
*
* semi-public routines -- used by other fun routines, but not by users
*
*/
#ifdef ANSI_FUNC
void
_FunCopyBinDelete(FITSHead header, int n)
#else
void _FunCopyBinDelete(header, n)
FITSHead header;
int n;
#endif
{
int i;
char *s;
FITSCard card;
/* delete unwanted fields */
ft_headdel(header, "TFIELDS", 0);
/* delete checksum header params */
if( (s=ft_headgets(header, "CHECKSUM", 0, NULL, &card)) && card){
ft_headdel(header, "CHECKSUM", 0);
xfree(s);
}
if( (s=ft_headgets(header, "DATASUM", 0, NULL, &card)) && card){
ft_headdel(header, "DATASUM", 0);
xfree(s);
}
for(i=1; i<=n; i++){
if( (s=ft_headgets(header, "TFORM", i, NULL, &card)) && card){
ft_headdel(header, "TFORM", i);
xfree(s);
}
if( (s=ft_headgets(header, "TTYPE", i, NULL, &card)) && card){
ft_headdel(header, "TTYPE", i);
xfree(s);
}
if( (s=ft_headgets(header, "TUNIT", i, NULL, &card)) && card){
ft_headdel(header, "TUNIT", i);
xfree(s);
}
if( (s=ft_headgets(header, "TDISP", i, NULL, &card)) && card){
ft_headdel(header, "TDISP", i);
xfree(s);
}
if( (s=ft_headgets(header, "TSCAL", i, NULL, &card)) && card ){
ft_headdel(header, "TSCAL", i);
xfree(s);
}
if( (s=ft_headgets(header, "TZERO", i, NULL, &card)) && card ){
ft_headdel(header, "TZERO", i);
xfree(s);
}
if( (s=ft_headgets(header, "TNULL", i, NULL, &card)) && card ){
ft_headdel(header, "TNULL", i);
xfree(s);
}
if( (s=ft_headgets(header, "TLMIN", i, NULL, &card)) && card ){
ft_headdel(header, "TLMIN", i);
xfree(s);
}
if( (s=ft_headgets(header, "TLMAX", i, NULL, &card)) && card ){
ft_headdel(header, "TLMAX", i);
xfree(s);
}
if( (s=ft_headgets(header, "TDMIN", i, NULL, &card)) && card ){
ft_headdel(header, "TDMIN", i);
xfree(s);
}
if( (s=ft_headgets(header, "TDMAX", i, NULL, &card)) && card ){
ft_headdel(header, "TDMAX", i);
xfree(s);
}
if( (s=ft_headgets(header, "TDBIN", i, NULL, &card)) && card ){
ft_headdel(header, "TDBIN", i);
xfree(s);
}
if( (s=ft_headgets(header, "TCTYP", i, NULL, &card)) && card ){
ft_headdel(header, "TCTYP", i);
xfree(s);
}
if( (s=ft_headgets(header, "TCRVL", i, NULL, &card)) && card ){
ft_headdel(header, "TCRVL", i);
xfree(s);
}
if( (s=ft_headgets(header, "TCDLT", i, NULL, &card)) && card ){
ft_headdel(header, "TCDLT", i);
xfree(s);
}
if( (s=ft_headgets(header, "TCRPX", i, NULL, &card)) && card ){
ft_headdel(header, "TCRPX", i);
xfree(s);
}
if( (s=ft_headgets(header, "TCROT", i, NULL, &card)) && card ){
ft_headdel(header, "TCROT", i);
xfree(s);
}
}
}
/*
*
* _FunCopy2ImageHeader -- copy FITS header, transforming it to primary image.
* This beastly routine is used by FunImagePut to make ordinary life easier.
*
*/
#ifdef ANSI_FUNC
int
_FunCopy2ImageHeader(Fun from, Fun to)
#else
int _FunCopy2ImageHeader(from, to)
Fun from; /* input FITS header */
Fun to; /* output FITS header */
#endif
{
int simple=1;
int i, j;
int cols;
char *s;
char tbuf[SZ_LINE];
double dval;
double crpix1, crpix2;
double cdelt1, cdelt2;
double ltv1, ltv2;
double ltm1_1, ltm2_1, ltm1_2, ltm2_2;
FITSCard card;
/* make sure we have something to work with */
if( !from )
return 0;
/* make a copy of the header */
to->header = ft_headcopy(from->header);
/* make sure this is a primary FITS file */
ft_cardfmt((FITSCard)to->header->cards,
"SIMPLE", 0, FT_LOGICAL, &simple, 0, "Standard FITS");
/* add/edit image-related keywords based on the orig binning values */
ft_headseti(to->header,
"NAXIS", 0, from->odims, "number of axes", 1);
ft_headseti(to->header,
"NAXIS", 1, from->odim1, "x axis dimension", 1);
if( from->odims >= 2 ){
ft_headseti(to->header,
"NAXIS", 2, from->odim2, "y axis dimension", 1);
}
else{
ft_headdel(to->header, "NAXIS", 2);
}
ft_headseti(to->header,
"BITPIX", 0, from->obitpix, "bits/pixel", 1);
/* synchronize the header and the cards after any changes */
ft_syncdata(to->header);
/* get dimensions of the new image back into the struct */
to->dim1 = ft_headgeti(to->header, "NAXIS", 1, 0, &card);
to->dim2 = ft_headgeti(to->header, "NAXIS", 2, 0, &card);
/* determine dimensionality */
if( card )
to->dims = 2;
else
to->dims = 1;
/* get bitpix */
to->bitpix = ft_headgeti(to->header, "BITPIX", 0, 0, &card);
/* now get image size based on these params */
_FunImageSize(to);
/* delete checksum header params */
if( ft_headgets(to->header, "CHECKSUM", 0, NULL, &card) && card)
ft_headdel(to->header, "CHECKSUM", 0);
if( ft_headgets(to->header, "DATASUM", 0, NULL, &card) && card)
ft_headdel(to->header, "DATASUM", 0);
/* now perform the transformation based on input type */
switch(from->type){
case FUN_TABLE:
case FUN_EVENTS:
/* delete extraneous bintable keyword */
/* but leave the XTENSION card so we can overwrite it later */
/* ft_headdel(to->header, "XTENSION", 0); */
ft_headdel(to->header, "PCOUNT", 0);
ft_headdel(to->header, "GCOUNT", 0);
if( (s=ft_headgets(to->header, "EXTNAME", 0, NULL, &card)) && card){
ft_headdel(to->header, "EXTNAME", 0);
xfree(s);
}
if( (ft_headgeti(to->header, "EXTVER", 0, 0, &card)!=0) && card)
ft_headdel(to->header, "EXTVER", 0);
if( (ft_headgeti(to->header, "EXTLEVEL", 0, 0, &card)!=0) && card)
ft_headdel(to->header, "EXTLEVEL", 0);
/* process table columns */
cols = ft_headgeti(to->header, "TFIELDS", 0, 0, &card);
/* transform WCS cards for the two columns on which we are binning */
/* this assumes the TFORMnnn are in order ... hmmm! */
for(j=1; j<=2; j++){
if( (i=from->bin[j-1]+1) >= 1 ){
if( (s=ft_headgets(from->header, "TCTYP", i, NULL, &card)) && card ){
ft_headapps(to->header, "CTYPE", j, s, NULL);
xfree(s);
}
if( (s=ft_headgets(from->header, "TCRVL", i, NULL, &card)) && card ){
ft_headappv(to->header, "CRVAL", j, s, NULL);
xfree(s);
}
if((dval=ft_headgetr(from->header, "TCDLT", i, 0.0, &card)) && card){
/* factor in binsize */
if( from->cols[i-1] && (from->cols[i-1]->binsiz > 0) )
dval *= from->cols[i-1]->binsiz;
ft_headsetr(to->header, "CDELT", j, dval, 7, NULL, 1);
}
if( (s=ft_headgets(from->header, "TCROT", i, NULL, &card)) && card ){
ft_headappv(to->header, "CROTA", j, s, NULL);
xfree(s);
}
if((dval=ft_headgetr(from->header, "TCRPX", i, 0.0, &card)) && card){
/* convert WCS center value from physical to image coords */
if( from->cols[i-1] ){
dval = tlp2i(dval,
from->cols[i-1]->tlmin, from->cols[i-1]->binsiz, 'D');
}
ft_headsetr(to->header, "CRPIX", j, dval, 7, NULL, 1);
}
}
}
/* delete unwanted fields */
_FunCopyBinDelete(to->header, cols);
break;
case FUN_IMAGE:
/* delete all signs of higher axes */
for(i=3; i<=ft_naxes(to->header); i++)
ft_headdel(to->header, "NAXIS", i);
/* if bscale and bzero were applied to the input, delete them */
if( from->scaled & FUN_SCALE_APPLIED ){
if( ft_headfind(to->header, "BSCALE", 0, 0) )
ft_headdel(to->header, "BSCALE", 0);
if( ft_headfind(to->header, "BZERO", 0, 0) )
ft_headdel(to->header, "BZERO", 0);
}
/* if an image section is blocked and we are summing,
we have to take that into account when setting the bzero factor */
else if( (ft_bzero(to->header) != 0.0) &&
(from->block != 1) && (from->btype == FUN_SUM) ){
dval = ft_bzero(to->header) * from->block * from->block;
ft_headsetr(to->header, "BZERO", 0, dval, 7, "", 1);
}
/* deal with the IRAF DETSEC keyword */
if( (s=ft_headgets(from->header, "DATASEC", 0, NULL, &card)) && card ){
int dx0, dx1, dy0, dy1;
char s1[SZ_LINE], s2[SZ_LINE], s3[SZ_LINE], s4[SZ_LINE];
char *t=s;
if( *t == '[' ) t++;
if(sscanf(t, "%[-0-9.*] : %[-0-9.*] , %[-0-9.*] : %[-0-9.*]",
s1, s2, s3, s4) == 4){
dx0 = MAX(1,atoi(s1)-from->x0+1);
dx1 = MIN(from->odim1,atoi(s2)-from->x0+1);
dy0 = MAX(1,atoi(s3)-from->y0+1);
dy1 = MIN(from->odim2,atoi(s4)-from->y0+1);
snprintf(s1, SZ_LINE, "[%d:%d,%d:%d]", dx0, dx1, dy0, dy1);
ft_headsets(to->header, "DATASEC", 0, s1, NULL, 1);
}
xfree(s);
}
break;
case FUN_ARRAY:
default:
break;
}
/* update WCS values */
/* re-set the tangent plane point */
crpix1 = ft_headgetr(to->header, "CRPIX", 1, 0.0, &card);
if( card != NULL ){
crpix1 = (crpix1 + 1.0 - from->x0 - 0.5)/from->block + 0.5;
ft_headsetr(to->header, "CRPIX", 1, crpix1, 7, "reference point", 1);
}
crpix2 = ft_headgetr(to->header, "CRPIX", 2, 0.0, &card);
if( card != NULL ){
crpix2 = (crpix2 + 1.0 - from->y0 - 0.5)/from->block + 0.5;
ft_headsetr(to->header, "CRPIX", 2, crpix2, 7, "reference point", 1);
}
/* update degrees/pixel */
cdelt1 = ft_headgetr(to->header, "CDELT", 1, 0.0, &card);
if( card != NULL ){
cdelt1 *= from->block;
ft_headsetr(to->header, "CDELT", 1, cdelt1, 7, "degrees/pixel", 1);
}
cdelt2 = ft_headgetr(to->header, "CDELT", 2, 0.0, &card);
if( card != NULL ){
cdelt2 *= from->block;
ft_headsetr(to->header, "CDELT", 2, cdelt2, 7, "degrees/pixel", 1);
}
/* WCS matrix-style */
for(i=1; i<=2; i++){
for(j=1; j<=2; j++){
snprintf(tbuf, SZ_LINE, "CD%d_%d", i, j);
dval = ft_headgetr(to->header, tbuf, 0, 0.0, &card);
if( card != NULL ){
dval *= from->block;
ft_headsetr(to->header, tbuf, 0, dval, 7, "WCS matrix value", 1);
}
}
}
/* re-set the tangent plane point for IRAF matrix */
/* for images, ltv values are in file */
if( from->odims >= 2 ){
if( from->header->image ){
ltv1 = ft_headgetr(from->header, "LTV", 1, 0.0, &card);
ltv2 = ft_headgetr(from->header, "LTV", 2, 0.0, &card);
}
/* for tables, ltv is related to tlmin value of binned columns */
else{
ltv1 = 1.0 - (int)(from->min1 + 0.5);
ltv2 = 1.0 - (int)(from->min2 + 0.5);
}
ltv1 = (ltv1 + 1.0 - from->x0 - 0.5 )/(from->block * from->binsiz1) + 0.5;
ltv2 = (ltv2 + 1.0 - from->y0 - 0.5 )/(from->block * from->binsiz2) + 0.5;
ft_headsetr(to->header, "LTV", 1, ltv1, 7, "IRAF ref. point", 1);
ft_headsetr(to->header, "LTV", 2, ltv2, 7, "IRAF ref. point", 1);
/* IRAF matrix values */
ltm1_1 = ft_headgetr(from->header, "LTM1_1", 0, 1.0, &card);
ltm2_1 = ft_headgetr(from->header, "LTM2_1", 0, 0.0, &card);
ltm1_2 = ft_headgetr(from->header, "LTM1_2", 0, 0.0, &card);
ltm2_2 = ft_headgetr(from->header, "LTM2_2", 0, 1.0, &card);
ltm1_1 /= (from->block * from->binsiz1);
ltm2_1 /= (from->block * from->binsiz2);
ltm1_2 /= (from->block * from->binsiz1);
ltm2_2 /= (from->block * from->binsiz2);
ft_headsetr(to->header, "LTM1_1", 0, ltm1_1, 7, "IRAF matrix value", 1);
ft_headsetr(to->header, "LTM2_1", 0, ltm2_1, 7, "IRAF matrix value", 1);
ft_headsetr(to->header, "LTM1_2", 0, ltm1_2, 7, "IRAF matrix value", 1);
ft_headsetr(to->header, "LTM2_2", 0, ltm2_2, 7, "IRAF matrix value", 1);
}
return(1);
}
/*
*
* public routines
*
*/
/* none */
|
