| High resolution grid shading [message #7048] |
Tue, 10 September 1996 00:00 |
rawlins
Messages: 4
Registered: August 1996
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Junior Member |
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I have a high-resolution (5-min) raster data file stored in binary format.
In mapping/shading our climate fields, we have some FORTRAN code that
reads in the z-values (ex- elevation), then draws and shades the 5-min x
5-min grid cells(DI3000). Actually it finds the value for first grid box,
then finds the next. If the subsequent cell is the same color as the
previous, the code accumulates cells until a color change is encountered,
and then plots and shades that entire cell. This algorithm is repeated
along either constant lines of latitude or longitude.
Does IDL have any built-in routines to do this? What are the commands
or keywords that would help get this done?
Is read_srf the correct read statement. Our machine is SGI IRIX.
Thanks,
Michael Rawlins
Department of Geography
University of Delaware
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