fitswcs.h File Reference

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Classes
struct	wcs

Macros
#define	NAXIS   2 /* Max number of FITS axes */
#define	DEG   (PI/180.0) /* 1 deg in radians */
#define	ARCMIN   (DEG/60.0) /* 1 arcsec in radians */
#define	ARCSEC   (DEG/3600.0) /* 1 arcsec in radians */
#define	MAS   (ARCSEC/1000.0) /* 1 mas in radians */
#define	YEAR   (365.25*DAY) /* 1 year in seconds */
#define	DAY   (24.0*HOUR) /* 1 day in seconds */
#define	HOUR   (60.0*MINUTE) /* 1 hour in seconds */
#define	MINUTE   60.0 /* 1 minute in seconds */
#define	MJD2000   51544.50000 /* Modified Julian date for J2000.0 */
#define	JD2000   (2400000.5+MJD2000) /* Julian date for J2000.0 */
#define	MJD1950   33281.92346 /* Modified Julian date for B1950.0 */
#define	JD1950   (2400000.5+MJD1950) /* Julian date for B1950.0 */
#define	JU2TROP   1.0000214 /* 1 Julian century in tropical units*/
#define	WCS_NOCOORD   1e31 /* Code for non-existing coordinates */
#define	WCS_NGRIDPOINTS   12 /* Number of WCS grid points / axis */
#define	WCS_NGRIDPOINTS2   (WCS_NGRIDPOINTS*WCS_NGRIDPOINTS)
#define	WCS_INVMAXDEG   9 /* Maximum inversion polynom degree */
#define	WCS_INVACCURACY   0.001 /* Maximum inversion error (pixels) */
#define	WCS_NRANGEPOINTS   32 /* Number of WCS range points / axis */

Typedefs
typedef struct wcs	wcsstruct

Enumerations
enum	celsysenum {   CELSYS_NATIVE, CELSYS_PIXEL, CELSYS_EQUATORIAL, CELSYS_GALACTIC,   CELSYS_ECLIPTIC, CELSYS_SUPERGALACTIC, CELSYS_NATIVE, CELSYS_PIXEL,   CELSYS_EQUATORIAL, CELSYS_GALACTIC, CELSYS_ECLIPTIC, CELSYS_SUPERGALACTIC }

Functions
wcsstruct *	create_wcs (char **ctype, double *crval, double *crpix, double *cdelt, int *naxisn, int naxis)
wcsstruct *	copy_wcs (wcsstruct *wcsin)
wcsstruct *	read_wcs (tabstruct *tab)
double	fmod_0_p360 (double angle)
double	fmod_m90_p90 (double angle)
double	sextodegal (char *hms)
double	sextodegde (char *dms)
double	wcs_dist (wcsstruct *wcs, double *wcspos1, double *wcspos2)
double	wcs_jacobian (wcsstruct *wcs, double *pixpos, double *jacob)
double	wcs_rawtoraw (wcsstruct *wcsin, wcsstruct *wcsout, double *pixposin, double *pixposout, double *jacob)
double	wcs_scale (wcsstruct *wcs, double *pixpos)
int	celsys_to_eq (wcsstruct *wcs, double *wcspos)
int	eq_to_celsys (wcsstruct *wcs, double *wcspos)
int	fcmp_0_p360 (double anglep, double anglem)
int	frame_wcs (wcsstruct *wcsin, wcsstruct *wcsout)
int	raw_to_red (wcsstruct *wcs, double *pixpos, double *redpos)
int	raw_to_wcs (wcsstruct *wcs, double *pixpos, double *wcspos)
int	reaxe_wcs (wcsstruct *wcs, int lng, int lat)
int	red_to_raw (wcsstruct *wcs, double *redpos, double *pixpos)
int	wcs_chirality (wcsstruct *wcs)
int	wcs_supproj (char *name)
int	wcs_to_raw (wcsstruct *wcs, double *wcspos, double *pixpos)
char *	degtosexal (double alpha, char *str)
char *	degtosexde (double delta, char *str)
void	b2j (double yearobs, double alphain, double deltain, double *alphaout, double *deltaout)
void	end_wcs (wcsstruct *wcs)
void	init_wcs (wcsstruct *wcs)
void	init_wcscelsys (wcsstruct *wcs)
void	invert_wcs (wcsstruct *wcs)
void	j2b (double yearobs, double alphain, double deltain, double *alphaout, double *deltaout)
void	precess (double yearin, double alphain, double deltain, double yearout, double *alphaout, double *deltaout)
void	precess_wcs (wcsstruct *wcs, double yearin, double yearout)
void	range_wcs (wcsstruct *wcs)
void	wipe_wcs (tabstruct *tab)
void	write_wcs (tabstruct *tab, wcsstruct *wcs)

Macro Definition Documentation

ARCMIN

#define ARCMIN   (DEG/60.0) /* 1 arcsec in radians */

ARCSEC

#define ARCSEC   (DEG/3600.0) /* 1 arcsec in radians */

DAY

#define DAY   (24.0*HOUR) /* 1 day in seconds */

DEG

#define DEG   (PI/180.0) /* 1 deg in radians */

HOUR

#define HOUR   (60.0*MINUTE) /* 1 hour in seconds */

JD1950

#define JD1950   (2400000.5+MJD1950) /* Julian date for B1950.0 */

JD2000

#define JD2000   (2400000.5+MJD2000) /* Julian date for J2000.0 */

JU2TROP

#define JU2TROP   1.0000214 /* 1 Julian century in tropical units*/

MAS

#define MAS   (ARCSEC/1000.0) /* 1 mas in radians */

MINUTE

#define MINUTE   60.0 /* 1 minute in seconds */

MJD1950

#define MJD1950   33281.92346 /* Modified Julian date for B1950.0 */

MJD2000

#define MJD2000   51544.50000 /* Modified Julian date for J2000.0 */

NAXIS

#define NAXIS   2 /* Max number of FITS axes */

WCS_INVACCURACY

#define WCS_INVACCURACY   0.001 /* Maximum inversion error (pixels) */

WCS_INVMAXDEG

#define WCS_INVMAXDEG   9 /* Maximum inversion polynom degree */

WCS_NGRIDPOINTS

#define WCS_NGRIDPOINTS   12 /* Number of WCS grid points / axis */

WCS_NGRIDPOINTS2

#define WCS_NGRIDPOINTS2   (WCS_NGRIDPOINTS*WCS_NGRIDPOINTS)

WCS_NOCOORD

#define WCS_NOCOORD   1e31 /* Code for non-existing coordinates */

WCS_NRANGEPOINTS

#define WCS_NRANGEPOINTS   32 /* Number of WCS range points / axis */

YEAR

#define YEAR   (365.25*DAY) /* 1 year in seconds */

Typedef Documentation

wcsstruct

typedef struct wcs wcsstruct

Enumeration Type Documentation

celsysenum

enum celsysenum

Enumerator
CELSYS_NATIVE
CELSYS_PIXEL
CELSYS_EQUATORIAL
CELSYS_GALACTIC
CELSYS_ECLIPTIC
CELSYS_SUPERGALACTIC
CELSYS_NATIVE
CELSYS_PIXEL
CELSYS_EQUATORIAL
CELSYS_GALACTIC
CELSYS_ECLIPTIC
CELSYS_SUPERGALACTIC

Function Documentation

b2j()

void b2j	(	double	yearobs,
		double	alphain,
		double	deltain,
		double *	alphaout,
		double *	deltaout
	)

celsys_to_eq()

int celsys_to_eq	(	wcsstruct *	wcs,
		double *	wcspos
	)

copy_wcs()

wcsstruct * copy_wcs

(

wcsstruct *

wcsin

)

create_wcs()

wcsstruct* create_wcs	(	char **	ctype,
		double *	crval,
		double *	crpix,
		double *	cdelt,
		int *	naxisn,
		int	naxis
	)

degtosexal()

char* degtosexal	(	double	alpha,
		char *	str
	)

degtosexde()

char * degtosexde	(	double	delta,
		char *	str
	)

end_wcs()

void end_wcs

(

wcsstruct *

wcs

)

eq_to_celsys()

int eq_to_celsys	(	wcsstruct *	wcs,
		double *	wcspos
	)

fcmp_0_p360()

int fcmp_0_p360	(	double	anglep,
		double	anglem
	)

fmod_0_p360()

double fmod_0_p360

(

double

angle

)

fmod_m90_p90()

double fmod_m90_p90

(

double

angle

)

frame_wcs()

int frame_wcs	(	wcsstruct *	wcsin,
		wcsstruct *	wcsout
	)

init_wcs()

void init_wcs

(

wcsstruct *

wcs

)

init_wcscelsys()

void init_wcscelsys

(

wcsstruct *

wcs

)

invert_wcs()

void invert_wcs

(

wcsstruct *

wcs

)

j2b()

void j2b	(	double	yearobs,
		double	alphain,
		double	deltain,
		double *	alphaout,
		double *	deltaout
	)

precess()

void precess	(	double	yearin,
		double	alphain,
		double	deltain,
		double	yearout,
		double *	alphaout,
		double *	deltaout
	)

precess_wcs()

void precess_wcs	(	wcsstruct *	wcs,
		double	yearin,
		double	yearout
	)

range_wcs()

void range_wcs

(

wcsstruct *

wcs

)

raw_to_red()

int raw_to_red	(	wcsstruct *	wcs,
		double *	pixpos,
		double *	redpos
	)

raw_to_wcs()

int raw_to_wcs	(	wcsstruct *	wcs,
		double *	pixpos,
		double *	wcspos
	)

read_wcs()

wcsstruct * read_wcs

(

tabstruct *

tab

)

reaxe_wcs()

int reaxe_wcs	(	wcsstruct *	wcs,
		int	lng,
		int	lat
	)

red_to_raw()

int red_to_raw	(	wcsstruct *	wcs,
		double *	redpos,
		double *	pixpos
	)

sextodegal()

double sextodegal

(

char *

hms

)

sextodegde()

double sextodegde

(

char *

dms

)

wcs_chirality()

int wcs_chirality

(

wcsstruct *

wcs

)

wcs_dist()

double wcs_dist	(	wcsstruct *	wcs,
		double *	wcspos1,
		double *	wcspos2
	)

wcs_jacobian()

double wcs_jacobian	(	wcsstruct *	wcs,
		double *	pixpos,
		double *	jacob
	)

wcs_rawtoraw()

double wcs_rawtoraw	(	wcsstruct *	wcsin,
		wcsstruct *	wcsout,
		double *	pixposin,
		double *	pixposout,
		double *	jacob
	)

wcs_scale()

double wcs_scale	(	wcsstruct *	wcs,
		double *	pixpos
	)

wcs_supproj()

int wcs_supproj

(

char *

name

)

wcs_to_raw()

int wcs_to_raw	(	wcsstruct *	wcs,
		double *	wcspos,
		double *	pixpos
	)

wipe_wcs()

void wipe_wcs

(

tabstruct *

tab

)

write_wcs()

void write_wcs	(	tabstruct *	tab,
		wcsstruct *	wcs
	)