| Re: Filled contours plotted on top of the continent outlines ??? [message #43275] |
Sun, 27 March 2005 16:45  |
g5seen
Messages: 4
Registered: September 2004
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Junior Member |
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David Fanning <davidf@dfanning.com> wrote in message news:<MPG.1cb09800d30bdd0998999a@news.frii.com>...
> Sebastian writes:
>
>> I have a problem with my continent/country boundaries wich are suposed
>> to be on top of data that are fill contours. Although the
>> MAP_CONTINENT command is called after the CONTOUR command the contours
>> are plotted on top of the continent outlines (meaning they are not
>> visible). Does anyone happen to know why that is so?
>
> I do this all the time and I have never seen this kind
> of behavior. Are you *sure* you are doing what you think
> you are doing? Or maybe there is something you aren't telling
> us. Are you plotting to a computer display?
>
> Maybe a quick peek at the code could solve the problem. :-)
>
> Cheers,
>
> David
Dear David,
Your question about to which output device I plot my data put me on
the right track. I am using the z-buffer. After a bid of digging
through my IDL code and doing some tests I found the problem.
Z-buffering was still turned on! That results in the filled contours
being plotted on top of the continent/country outlines, regardless of
the MAP_CONTINENT command being called after the CONTOUR command.
Many thanks anyway for you quick reply and enjoy your Easter breake,
Sebastian
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