New Releases: TOPCAT & STILTS

The following new releases were made on 25 March 2010:

TOPCAT v3.5-2

STILTS v2.1-2

Updates/improvements include:

  • JyStilts: You can now invoke STILTS commands from Jython as an alternative to the Unix/DOS command line.  This seems to work well, but is somewhat experimental – feedback is encouraged.  See
  • Crossmatching enhancements: Scalability and performance have been improved for the STILTS and TOPCAT crossmatching functions.  Quantitative differences depend on detailed requirements, but maximum table size increases of a factor of 5 and CPU time decreases of a factor of 3 are typical; ten million is now a ballpark figure for the number of rows you can match in a reasonable amount of memory. If you have crossmatching requirements which are still out of the scope of this software, please make contact through the TOPCAT web page

These releases also contain quite a number of smaller performance and functionality enhancements and bug fixes.  For details, see the full version histories: TOPCAT and STILTS.

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