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Changes Introduced in V1.8-8

The following describes the most significant changes which occurred in the AST library between versions V1.8-7 and V1.8-8:

1.
A bug has been fixed in the FitsChan class which could cause problems when creating a FrameSet 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.
2.
A new method called astBoundingBox has been added to the Plot class. This method returns the bounding box of the previous graphical output produced by a Plot method.

3.
A new attribute called Invisible 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.

4.
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.).



next up previous
Next: Changes Introduced in V1.8-13
Up: Changes and New Features
Previous: Changes Introduced in V1.8-7

AST A Library for Handling World Coordinate Systems in Astronomy
Starlink User Note 211
R.F. Warren-Smith & D.S. Berry
30th April 2003
E-mail:ussc@star.rl.ac.uk

Copyright (C) 2003 Central Laboratory of the Research Councils