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Land Area Map Routines

 

The LNDSEA1.DAT file contains a bit  map of the land/sea area of the earth. Using the file, a specified point of latitude and longitude can be determined to be land or sea. A routine, LNDSEA, opens the file and provides a flag to indicate if the specified point is land or sea.

Fortran file unit 1 should be reserved for accessing the map data file by these routines. The logical name  LONGLOC: must be assigned to be the directory containing the LNDSEA1.DAT file.





David Long
Wed Jun 12 10:34:11 MDT 1996