To plot Stokes values, a selector object must be created and the set_polarisation function used to select the desired polarisation products.
The values which can be plotted include a selection of [I,Q,U,V], [I, Plinear, Pangle, V], [RR, LL] or [XX, YY, Real(XY), Imaginary(XY)]. (Plinear and Pangle are the percentage and position angle of linear polarisation).
Example:
ASAP>selection = selector() ASAP>selection.set_polarisations(``I Q U V'') ASAP plotter.set_selection(selection); # Select I, Q, U \& V ASAP>selection.set_polarisations(``I Q'') ASAP plotter.set_selection(selection); # Select just I \& Q ASAP>selection.set_polarisations(``RR LL'') ASAP plotter.set_selection(selection); # Select just RR \& LL ASAP>selection.set_polarisations(``XX YY'') ASAP plotter.set_selection(selection); # Select linears ASAP>selection.set_polarisations(``I Plinear'') ASAP plotter.set_selection(selection); # Fractional linear ASAP>selection.set_polarisations(``Pangle'') ASAP plotter.set_selection(selection); # Position angle
Scan, beam and IF selection are also available in the selector object as describe in section .