13.4 Analysing data

The MAP_POLAR command allows to derive images of the Polarized intensity and/or fraction and Polarization angle, as well as display of the polarization vectors onto a background image. So far, the command only works for a single plane image, i.e. continuum data.

The MAP_POLAR command works through data files that follow the conventional naming rules to identify them. The implicit rule is that Stokes S (where S is any of I,Q,U,V) is stored in a file of name 'NameBegin'"-"'S”NameEnd', e.g. if 'NameBegin' is My_Data

    My_Data-I+C.uvt,  My_Data-U+C.lmv-clean, etc..

where the +C NameEnd code has been added by the use of the pipeline through the self-polar script to extract continuum only data.