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= Starlink Software Collection — 2022A Release Notes =

== Highlights ==

 * Starlink no longer requires the csh command to be available.

== Changes to Applications ==

=== CUPID (ascl:1311.007) ===

 * The GaussClumps method in the findclumps command has been multi-threaded and so should run significantly faster on most modern computers.
 * The scheme used by GaussClumps to assign a weight to each pixel when fitting a clump has been changed to provide more stable fits.

=== GAIA (ascl:1403.024) ===

=== KAPPA (ascl:1403.022) ===
 
 * The block command has been multi-threaded and so should run significantly faster on most modern computers. It also now supports huge NDFs.
 * The maths command now generates standard Starlink "bad" values at output pixels that have no valid value (previously NaN values were generated).

=== ORAC-DR (ascl:1310.001) ===
[[https://www.eao.hawaii.edu/oracdr/2022AChangeLog|ORAC-DR 2022A change log]]


=== SMURF (ascl:1310.007) ===

 * A bug in the makemap command that could cause spurious behaviour and crashes has been fixed. This bug occurred whenever any dimension of the output map was smaller than the number of cores on the machine running the command.
 * The pol2map script can now handle data sets that span a date at which the FCF value changed.
 * A bug has been fixed in the pol2map command that could cause it to abort when using a non-POL2 total intensity map.
 * A bug in the makecube command that could cause very small errors in the input data weighting scheme has been fixed.

=== SOURCEPLOT ===
 * The included JCMT source catalog has been updated.

=== SPLAT (ascl:1402.007) ===

=== STILTS (ascl:1105.001) ===
 * Updated to Version ???.

[[http://www.starlink.ac.uk/stilts/sun256/versions.html|STILTS version history]]

=== TOPCAT (ascl:1101.010) ===
 * Updated to Version ???.

[[http://www.starlink.ac.uk/topcat/sun253/versions.html|TOPCAT version history]]

== Changes to Libraries ==

=== AST (ascl:1404.016) ===
 * The Fortran interface now works with gfortran V8 and later (previously, spurious segmentation faults could occur due to character string lengths being interpreted incorrectly).
 * A bug in the astRebinSeq command that could causes NaN value sin the output array has been fixed.
 * A new attribute called 'FitsRounding' has been added to the FiutsChan class. This new attribute allows control of the way that values stored in FITS headers are rounded.
 * A bug has been fixed in the FitsChan class that causes NCP projection headers to be interpreted incorrectly.
 * A bug that could cause a FitsChan to crash when writing out a FITS header has been fixed. This bug only happened when using the clang compiler.

=== CVG ===

=== HDS ===

=== NDF ===

=== PCS ===

=== STIL ===
 * Updated to Version ???.

[[http://www.starlink.ac.uk/stil/sun252/history.html|STIL version history]]

=== CFITSIO ===
 * Updated to ???.


== Changes to Cookbooks and Guides ==

 * SC/20
 * SC/21
 * SC/22

== Known issues ==

 * There is a known threading problem that prevents the Java application Treeview from working on HDS Version 5 (HDF5) files.