V6.7-1

This is the first full Starlink/JAC release of SPECX for and includes significant new functionality added at the JAC.

Changes to include functionality similar to that found in the VMS version:

• command line editing
• exception handling (CTRL C)

Other changes:

• NEW-PLOT and OVERLAY now accept a color index (1-15) as second argument. If the color index is negative, each subband (quadrant) of a spectrum is plotted with a different color. The default is now retained in the dump.

• Auto Y-axis scaling for NEW-PLOT, R-L-B etc now looks only at points in current X-axis range. Still no autoscaling within interactive graphics however.

• READ-GSD-DATA now also checks DATADIR for gsd files after current directory (setenv DATADIR ... before starting Specx). Has also been speeded up significantly. Reads all subscans at once. Drawback: won't re-read the disk file (even when altered) until another GSD file has been read.
• DAS-MERGE default for DC adjust changed to 'N'. DAS-MERGE has been changed from a script to a FORTRAN coded command.

• SET-INTERACTIVE now 'N' upon entry to SPECX.

• REGRID has been rewritten to be more robust. ** It has new questions ** The original functionality is retained, but it also allows you specify the final number of channels and the centre (in current x-units) of the regridded spectrum.

• PLOT-LINE-PARS: the bug that cause a crash when not plotting a linear sequence of parameter maps (e.g 1, 2, 3) has now been fixed.

• INDEX-FILE, COMPRESS-FILE, LIST-MAP allow limits on scan nr and offset positions if more than 25 scans.

• New NDF map format - much faster. Version 4.1 maps WILL BE COPIED to the new format.

New commands:

• DAS-MERGE is now a FORTRAN subroutine i.s.o. a Specx Macro.

• WRITE-FITS-CUBE (under test).

• INFO-FILE (update NDF spectral file header information: for use with SPECX macros. Ensures SPECX variables refer to indicated file.)

• READ-GSD-RASTER (under test: directly reads all subscans from GSD file into a SPECX file with an optional DAS-MERGE along the way. Much faster than SPECX do-loop). Use the new MERGE-FILES command to average overlapping spectra read with this command.