topohead

正交网格生成程序源码

-----------------------------------------
 ETOPO5 data extracted from NGDC web
-----------------------------------------
Area: 
              40 North latitude
                       |
 79 West longitude    - -     70 West longitude
                       |
              31 North latitude

Data format:  Datavalues in whole Meters
              (- = below sea level)

Delimiter: tab

Grid size: 109 x 109 matrix of 5-minute grid values beginning
           at NorthWest corner progressing Eastward for 109
           values, then stepping 5 minutes South for the next
           row, ending at SouthEast corner.

Note: Negative latitudes are South.
      Negative longitudes are West.