It C draws a filled map with filled contours appearing in C Africa. In order to mask Africa from the map fill, we C use the mpMaskAreaSpecifiers resource and mask all of C the countries in Africa. NhlFInitialize C C Create an application object.
C C Call the routine 'gendat' to create an array of contour data.
C Create a ScalarField data object and hand it the data created by C 'gendat'. C C Create a ContourPlot object using the above data field, and make sure C the LabelBar is displayed. C C Create a map object, specifying the areas we want filled and masked. C C Destroy the workstation object and exit. This is a routine to generate test data for two-dimensional graphics C routines.