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Re: Get Lat/long equivalent based on NEASE grid value [message #72963 is a reply to message #72961]

Thu, 21 October 2010 12:33

Snow53
Messages: 32
Registered: July 2010

Member

On Oct 21, 1:28 pm, David Fanning <n...@dfanning.com> wrote:
> Snow53 writes:
>> I'm not doing any sort of transformation on the data (WGS-84 was
>> defined at the datum in the data hdr file I got with these data).
>
>> What I want to do is a quick geographic-based masking of these files ,
>> i.e. anything <50 deg N gets masked as -9999. The way the spherical
>> NEASE coordinates are set up makes this more difficult to do, so I had
>> this idea that I would just get the lat/long equivalent and use that
>> to define the mask criteria (but no easy lunch, right? :) ).
>
> Well out of the realm of my expertise now. :-)
>
> You can probably locate the files you need here:
>
> http://nsidc.org/data/ease/tools.html
>
> The errors you introduce with a WGS-84 datum are small
> compared to what you want to use it for. :-)
>
> Cheers,
>
> David
>
> --
> David Fanning, Ph.D.
> Fanning Software Consulting, Inc.
> Coyote's Guide to IDL Programming:http://www.dfanning.com/
> Sepore ma de ni thui. ("Perhaps thou speakest truth.")

Thanks David.

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[Message index]

		Re: Get Lat/long equivalent based on NEASE grid value By: David Fanning on Thu, 21 October 2010 12:46
		Re: Get Lat/long equivalent based on NEASE grid value By: Snow53 on Thu, 21 October 2010 12:33
		Re: Get Lat/long equivalent based on NEASE grid value By: David Fanning on Thu, 21 October 2010 12:28
		Re: Get Lat/long equivalent based on NEASE grid value By: Snow53 on Thu, 21 October 2010 12:18
		Re: Get Lat/long equivalent based on NEASE grid value By: David Fanning on Thu, 21 October 2010 12:04
		Re: Get Lat/long equivalent based on NEASE grid value By: Snow53 on Thu, 21 October 2010 11:50
		Re: Get Lat/long equivalent based on NEASE grid value By: David Fanning on Thu, 21 October 2010 11:39

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