V6.7-2

This release includes a fix to the calculation of integration times from RASTER maps and some bug fixes.

The changes include:

• Correct calculation of integration time for Raster data.

  This version correctly calculates the equivalent "on+off" integration time for on-the-fly spectra (e.g. a raster time of 5 seconds in a 55 by y raster will show up in SPECX as an integration time of about 17 seconds). This change means that you now can safely average raster data with regular "on+off" spectra or different size raster maps.

  Also, note that if you want to combine new rasters with raster data in existing SPECX files, you'll either have to read the old GSD raster files again or you'll have to change the integration time in the headers of the data in the old SPECX files:

  
  

  $$INT\_TIME = INT\_TIME * \frac{4}{1+\sqrt{55}}$$
  
  

  for a raster with 55 points per row.

• Now correctly reads CLASS format FITS data via READ-FITS-SPECTRUM

• A new variable has been added which gives access to the max and min values used for greyscale plots. The new symbol is MAPLIMITS(2), e.g.,

  >> print maplimits(1)
  

  would print the minimum value used for the last greyscale. This is sometimes useful from scripts.

• GET-SPECTRUM-FROM-MAP now sets the scan number stored in the header to the position of the spectrum in the map. This was to get over a problem encountered when writing spectra to data files that had scan numbers of 0.

Minor technical changes:

• GSD-PREFIX can now be 32 characters instead of 16.

• The title used for dual channel data (eg RxB3) is now constructed correctly.

• System calls are now performed with the SH command on Solaris (this is 10 times faster than the equivalent SYSTEM command since a .cshrc file is not sourced). This means that different system source files must be used on Alpha and Solaris systems.