diff options
Diffstat (limited to 'sys/mwcs/mwgwsampr.x')
| -rw-r--r-- | sys/mwcs/mwgwsampr.x | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/sys/mwcs/mwgwsampr.x b/sys/mwcs/mwgwsampr.x new file mode 100644 index 00000000..881177e4 --- /dev/null +++ b/sys/mwcs/mwgwsampr.x @@ -0,0 +1,34 @@ +# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc. + +include <syserr.h> +include "mwcs.h" + +# MW_GWSAMPR -- Get the sampled WCS curve for an axis. + +procedure mw_gwsampr (mw, axis, pv, wv, npts) + +pointer mw #I pointer to MWCS descriptor +int axis #I axis which gets the wsamp vector +real pv[ARB] #O physical coordinates of points +real wv[ARB] #O world coordinates of points +int npts #I number of data point in curve + +pointer wp +errchk syserrs +string s_name "mw_gwsampr" + +begin + # Get the current WCS. + wp = MI_WCS(mw) + if (wp == NULL) + call syserrs (SYS_MWNOWCS, s_name) + + # Verify that there is a sampled curve for this WCS. + if (WCS_NPTS(wp,axis) <= 0 || WCS_PV(wp,axis) == NULL + || WCS_WV(wp,axis) == NULL) + call syserrs (SYS_MWNOWSAMP, s_name) + + # Copy out the curves. + call achtdr (D(mw,WCS_PV(wp,axis)), pv, min(WCS_NPTS(wp,axis), npts)) + call achtdr (D(mw,WCS_WV(wp,axis)), wv, min(WCS_NPTS(wp,axis), npts)) +end |