The POLAR_CONTOUR procedure draws a contour plot from data in polar coordinates. Data can be regularly- or irregularly-gridded. All of the keyword options supported by CONTOUR are available to POLAR_CONTOUR.
This routine is written in the IDL language. Its source code can be found in the file
subdirectory of the IDL distribution.
The data values to be contoured. If the data is regularly gridded, Z must have the dimensions (N_ELEMENTS( Theta ), N_ELEMENTS( R ). Note that the ordering of the elements in the array Z is opposite that used by the POLAR_SURFACE routine.
A vector of angles in radians. For regularly-gridded data, Theta must have the same number of elements as the first dimension of Z . For a scattered grid, Theta must have the same number of elements as Z .
POLAR_CONTOUR accepts all of the keywords accepted by the CONTOUR routine except C_LABELS, DOWNHILL, FOLLOW, PATH_FILENAME, PATH_INFO, and PATH_XY. See CONTOUR . In addition, there is one unique keyword: