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gtopo30 values  XML
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[Post New]21/01/2009 10:41:52
    Subject: gtopo30 values
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smokey_the_bear



Joined: 21/01/2009 10:40:11
Messages: 1
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Hi,

I'm loading up allCountries.txt, and noticed that when the elevation isn't specified, gtopo30 is often 1 or -9999. Is there any significance to which of those numbers it is?

Thanks,
Anna
[Post New]21/01/2009 22:20:06
    Subject: Re:gtopo30 values
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marc



Joined: 08/12/2005 07:39:47
Messages: 4501
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-9999 stands for 'undefined'.

Marc
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