17.4.3 MAPS

[DISPLAY\]COMPARE [LeftMap RightMap] [Mode]

Compare side by side two 2-D datasets. The LeftMap defines the way both are displayed (sizes, contour levels, color scale). If neither is specified, just re-display the last ones.

Mode is an optional keyword that indicates which data set controls the size (unless SIZE is non zero) and data range (unless SCALE is specified). Allowed keywords are

 LEFT    Size and data range taken from LeftMap
 RIGHT   Size and data range taken from RightMap
 JOINT   Data range taken as the union of the Left and Right ranges
 EACH    Data range taken for each map.

For JOINT and EACH, the size is the union of sizes.

The maps can be planes of data cubes. For example COMPARE CLEAN[2] CLEAN[16]
will display side by side channel 2 and channel 16 of the CLEAN cube.