Module function to set the coordinate system for 2-D image analysis.
Integer_Type set_coord([Integer_Type],String_Type)
Success/Error Return Values: 1/0
Arguments:
(1) Dataset number (default 1)
(2) Coordinate system string
The set_coord() function
indicates to Sherpa the coordinate system within which to
do 2-D image analysis.
For Sherpa
version 3.0.2, supported string inputs are "logical" (equivalent to
"image"), "physical", and "world" (equivalent to "wcs").
sherpa> data example.fits
sherpa> () = set_coord(1,"physical")
sherpa> get_coord()
physical
sherpa>
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