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Last modified: 25 September 2018

URL: http://cxc.harvard.edu/chips/convert/upgrade42-43.html

CIAO 4.2 to 4.3 upgrade guide


WCS support


Coordinate-system names

The algorithm used to generate the names of coordinate systems has changed. This means that data coordinate system names which used to look like plot2_ax1ay2 now look like ds.0.0.0.3. Since they can no-longer be guessed from the plot and axis names, the info_coordinate or info_current commands should be used to find out the name.


Info ordering

The order that objects are listed by the info and info_current commands may be different for those objects that are "children" of plots (so curves, histograms, contours, images and the annotations).