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        MAP\XY_MAP [Filename] /NOGRID

    XY_MAP /NOGRID builds an LMV spectra cube and an associated weight image
    from an XY table, but does not regrid the data with a convolution.

    The  command checks that it encounters points which are regularly spaced
    (i.e., on a grid), and it deduces from these the typical  parameters  of
    the  spatial  grid  (pixel  size,  map size, ...). The grid alignment is
    checked with a tolerance. By default the tolerance is  a  tenth  of  the
    beam, if the beam is known (see HELP XY_MAP TUNING for the possible ways
    to declare the beam). If the beam is not known, the tolerance can be ex-
    plicitly set in the variable MAP%TOLE (in arcsec).

    The  parameters  of  the  output  cube can still be overridden by user's
    MAP%LIKE and MAP% objects.

Gildas manager 2018-08-18