NAME¶
wcsgrid - Extract WCS keywords for an image
SYNOPSIS¶
wcsgrid [
-a<alt>] [
-d<pgdev>]
[
-h<hdu>] [
<fitsfile>]
DESCRIPTION¶
wcsgrid extracts the WCS keywords for an image from the specified FITS file and
uses pgsbox() to plot a 2-D coordinate graticule for each alternate
representation found.
The FITS file may be specified according to the syntax understood by cfitsio,
for example "file.fits.gz+1" refers to the first extension of a
gzip'd FITS file. Use "-" or omit the file name for input from
stdin.
OPTIONS¶
- -a<alt>
- Plot a graticule only for the alternate representation specified (ignored
if there is only one).
- -d<pgdev>
- PGPLOT device type (default XWINDOW, use "?" for list).
- -h<hdu>
- Move to HDU number (1-relative) which is expected to contain an image
array. (Useful for input from stdin.)