How do I fill my contour levels with various shading patterns and/or solid colors?
If you just want to fill your contour levels with various solid colors, set cnFillOn to True. If you are using gsn_xxx interfaces, then you can additionally set gsnSpreadColors to make sure your full color map is spanned. To change the default colors used for the contour levels, set cnFillColors to an array of desired color indexes. If you want to fill the contour levels with different shading patterns, you must set cnMonoFillPattern to False, and then set cnFillPatterns to an array of desired fill pattern indexes. There are 18 different fill patterns: pattern 0 is solid fill, patterns 1-16 are various fill patterns, and pattern 17 is a special stipple fill pattern. If you use “-1” for a fill pattern, this means to leave it transparent (no fill). There’s a function called gsn_contour_shade that allows you to specify contour levels where you want specific shading or colors.
