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        LAS\STITCH [/RESAMPLE NX Xref Xval Xinc Unit]

      No /RESAMPLE
        Without this option, STITCH behaves as AVERAGE /RESAMPLE,  stitching
        all the input frequency axes. The resampling is possible but not en-
        forced. A consistency test first checks if the spectra frequency ax-
        es  are identical or not. If yes, the spectra are stacked channel by
        channel (no resampling). If not, the frequency axes  are  resampled.
        The  frequency  axis of the output sum is automatically computed. In
        particular, the output spectrum has the coarsest resolution  of  the
        input  spectra.  Those  are then internally resampled and stacked on
        the output axis.

      /RESAMPLE NX Xref Xval Xinc Unit
        A custom output X axis can be given with  the  syntax  /RESAMPLE  NX
        Xref  Xval  Xinc  Unit.  In this case, the resampling is always per-
        formed. The input spectra are internally resampled  and  stacked  on
        this axis. See HELP RESAMPLE for possible uses and caveats.

Gildas manager 2019-02-20