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| nielbock |
03/10/2006 01:12PM (Read 3275 times)
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Status: offline
Registered: 03/10/2006
Posts: 1
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Hi there,I tried to calibrate my spectra with the "identify" task. I receive a strange error message saying:"Warning: MWCS: cannot compile transformation, dependent axis has been excluded (world)"What does this mean?Cheers,
Markus.
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| fitz |
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03/10/2006 01:12PM
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Status: offline
Registered: 09/30/2005
Posts: 4040
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Most commonly it means that there is an RA/DEC wcs in the image header which the spectral tasks like IDENTIFY can't handle. It can also happen when there is a dimension mismatch, e.g. the WCSDIM header keyword is '2' for a 1-D image or somesuch. The solution is to remove the coordinate system from the header. You do this withcl> wcsreset <images> wcs=worldSince the end result of most spectral data reductions is to dispersion calibrate the data the initial RA/DEC system is not needed. Hope this helps.Cheers,
-Mike
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Identify and WCS coordinates
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