For each of the four plots, use a different mapping function and C create a different background. C C Polar coordinates. IF C C Initialize the drawing of the contour plot. C C Increase the line width for labelled levels and turn off the area C identifiers for all levels. C between which shading is to be done.
C C Draw the contour plot.
C C Compute and print statistics for the plot and label it. XINP and YINP are assumed to be C the longitude and latitude, in degrees, of a point on the globe. 3 implies an orthogonal, but unequally-spaced mapping. XINP C is assumed to lie in the range from 1 to M, YINP in the range from C 1 to N, where M and N are the dimensions of the grid. 4 implies a generalized distortion.