MapPlotter

class Data_Reduction.plotting.MapPlotter(mapobj)

Bases: object

Methods Summary

contours(chnl[, width, height, contours])	Make contour maps; this calls ‘regrid’ if necessary
plot_azel([title_str])	Plot elevation vs azimuth
plot_ra_dec([J2000, title_str])	Plot declination vs right ascension
plot_xdec_dec([title_str])	plots the xdec and dec positions at which data were taken

Methods Documentation

contours(chnl, width=None, height=None, contours=None)

Make contour maps; this calls ‘regrid’ if necessary

Parameters

• chnl (str) – required signal channel name

• width (float) – optional, defaults to data cross-dec range

• height (float) – optional, defaults to data dec range

• contours (int or list of int) – number of contours or contour levels

plot_azel(title_str='Horizontal Positions')

Plot elevation vs azimuth

plot_ra_dec(J2000=False, title_str=None)

Plot declination vs right ascension

plot_xdec_dec(title_str='Offsets')

plots the xdec and dec positions at which data were taken

These data come from table ‘raster’. These should agree with the grid points computed for the channel selected for the Z-plot realtime display. For the other channels, the data taken from table ‘tlogs’ may differ because of timing differences in the voltage-to-frequency converters. The table records ‘az’ and ‘el’ for each ‘chan’ which can be used to compute ‘RA’ and ‘dec’ and then ‘center_map’ can generate relative offsets.