next up previous contents index
Next: MAP_POLAR /STEP Up: MAP_POLAR Previous: MAP_POLAR /COMPUTE   Contents   Index


MAP_POLAR /BACKGROUND

        [ADVANCED\]MAP_POLAR GenericBegin [GenericEnd] /BACKGROUND Type [Min
    Max] [/STEP Step Xfirst Yfirst]

    Show the polarization vectors derived from the  Polarization  Angle  and
    Fraction maps overlaid on a background image.

    Type can be I for total intensity, F for fractional polarization in per-
    cent, or P for the polarized intensity. Min and Max indicate  the  SCALE
    to be used for the color scaling (through a temporary assignments of the
    SCALE values for SHOW command called by MAP_POLAR).

    Type, Min, and Max, like Step, Xfirst, Yfirst are  "sticky"  (remanent):
    they  keep the previous value until a new one is specified, or are reset
    to their default values by use of the /COMPUTE option.  Default is I for
    Type,  0 for Min and Max, which implies an automatic scaling to the data
    range.


Gildas manager 2023-06-01