B Release Notes—V1.1

B.1 New Commands

The following new scripts have been added:

gridspec

Averages groups of spatially neighbouring spectra of a three-dimensional IFU NDF and then plots these averaged spectra in a grid.

velmoment

Builds a velocity map from the collapsed intensity-weighted spectral co-ordinates. It supports spatial compression.

B.2 Modified Commands

The following applications have been modified:

• compare has a -i option for the input filename for non-interactive scripting.
• multistack and stacker plot ordinate limits now always make visible all the spectra, regardless of the chosen offset.
• passband does not dump WCS mappings in NDFCOPY. Ensured that the plots of spectra use the axis co-ordinate system. Removed unused -r option.
• peakmap now has -c option to specify the number of contour levels to plot.
• step now plots the image slices in an optimally shaped grid rather than full size in quick succession, and thereby permits comparison of the slices.
• velmap generalised the transformation of the measured line displacements from the rest-frame co-ordinate in the current spectral system into one of four velocity measurements using WCSTRAN. Added a SpecFrame to achieve this functionality for UK data-cube files. Also recognises the SKY-DSBSPECTRUM Domain.

  Added the -s option to define the co-ordinate system of the derived velocities. Ensured that the plots of spectra use the axis co-ordinate system. The script inquires the WCS for the rest-frame frequency to avoid unnecessary prompting.

  Changed lower percentile for display from 15 to 2. Use spectrum colour table. Added a velocity key.

  Additional -c option to specify the number of contours; this may be zero to prevent contours be overlaid. Added -ci option to specify the colour index of contours.

B.3 General changes

• The package applications COPYAXIS, GETBOUND, and PUTAXIS have been withdrawn. The scripts that invoked these now call KAPPA:SETAXIS (setaxis ndf=? like=?) KAPPA:NDFTRACE (access FLBND and FUBND output parameters), and SETAXIS in WCS mode (setaxis ndf=? dim=? mode=wcs comp=Centre for each dimension) respectively.
• The scripts have been generalised to spectral co-ordinate systems other than Wavelength in Ångstrom. Units are reported too.
• A bug displacing by $+1$ pixel negative pixel indices determined by the cursor has been fixed. It was present in most of the scripts.
• Spectrum plots now use the histogram style for greater clarity.
• Reset KAPPA:DISPLAY parameters in a few scripts so that features enabled in other scripts, like a key, do not bleed through.
• Tidied the scripts. Changes included the silent removal and creation of files, alphabetical ordering of the options, documentation of default values of options, corrections to grammar and punctuation, avoidance of :r, aligned output, command-line rubbish disposal, and tab removal.
• Accepts .sdf extension and/or NDF sections to be supplied through new internal routine checkndf.csh.
• Shortened many scripts through use of internal routine getcurpos.csh to obtain and mark cursor positions.