The following describes the most significant changes which
occurred in the AST library between versions V1.8-7 and V1.8-8:
- A bug has been fixed in the FitsChanFitsChan class which could cause
problems when creating a FrameSetFrameSet from a FITS header containing WCS
information stored in the form of Digitised Digitised Sky Survey (DSS)
keywords. These problems only occurred for DSS fields in the southern
hemisphere, and resulted in pixel positions being mapped to sky positions
close to the corresponding northern hemispshere field.
- A new method called
astBoundingBoxastBoundingBox
has been added to the PlotPlot class. This method returns the bounding box of
the previous graphical output produced by a Plot method.
- A new attribute called InvisibleInvisible has been added to the Plot class
which suppresses the graphical output normally produced by Plot methods.
All the calculations needed to produce the normal output are still
performed however, and so the bounding box returned by the new
astBoundingBox
method is still usable.
- Bugs have been fixed related to the appearance of graphical output
produced by the Plot class. These bugs were to do with the way in which
graphical elements relating to a specific axis (e.g. Colour(axis1), etc.)
interacted with the corresponding generic element (e.g.
Colour(axes), etc.).