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Contouring data over maps
| Re: Contouring data over maps [message #12653 is a reply to message #12469] |
Mon, 10 August 1998 00:00  |
mgfreeman
Messages: 1
Registered: August 1998
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Junior Member |
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Hi Jason
Apologies if something similar appears, this is the first time I've tried to
post and I don't think it worked on Friday (and of course I forgot to keep a
copy so I'm writing this again!).
About 2 years ago I did something very similar, contouring temperature and
salinity in the Eastern Mediterranean. My gridded dataset had Cyprus sat
right in the middle of the data. To stop contour extrapolating/interpolating
across land I assigned NaN (IEE not a number) values to the grid points on
land. This stopped contour lines across land and also stopped any data
'slant' due to using 0's (or any other 'fudge' value). This method has one
drawback that you can't fill the contours as they have to be closed.
I wrote a simple point and click program to assign the NaN values. If you
like I can try and dig out the code (email me!).
Hope this helps
Mark Freeman
In article <35C7589E.C37A0F1C@rex.cs.tulane.edu>,
hasenbuh@rex.cs.tulane.edu wrote:
> Hmm
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