The following describes the most significant changes which
occurred in the AST library between versions V9.2.11 and V9.2.12:
- A new attribute called IgnoreBadAltIgnoreBadAlt has been added to the FitsChanFitsChan
class. If set, it allows unreadable alternate axis descriptions within FITS-WCS
headers to be ignored. By default, such headers would cause an error to
be reported.
- A new warning called BadAlt has been added to the FitsChan class. If
included in the list of active warnings (see attribute “WarningsWarnings”), a
warning will be created if any alternate axes are ignored when reading a
FITS-WCS header.
- The FitsChan class now supports 64 bit integer keyword values.
- The TableTable class now supports 64 bit integer columns.
- The FitsTableFitsTable class now supports 64 bit integer columns.
- The MinOrderMinOrder attribute of the MocMoc class can be higher than MaxOrderMaxOrder
to allow small features to be included in a lower-resolution MOC
when using astAddPixelMask or astAddRegionastAddRegion with a non-MOC region.
(It should no longer be set to a very large value to have MaxOrder
used instead in these methods.)
- When adding FITS data or string representation to a Moc object,
cells of greater order than the MaxOrder attribute will be degraded
to that resolution.
- Tracing the outline of a Moc region (via the surface mesh) has
hopefully been made more reliable with the addition of backtracking.
- Added a check for an acos parameter being out of range in internal
line length calculation in SkyFrameSkyFrame.
- BoxBox simplification to PolygonPolygon in a SkyFrame checks handedness
without using astGetBounded.
