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Re: [thredds] NCSS : request that subset data across 180° longitude

The TDS does not support subsets across the grid boundary.  But it should.

On 9/18/14, 4:36 AM, Thomas LOUBRIEU wrote:
Salut Tony !

I noticed that your dataset is in -180,180 longitude (and not 0,360 as
your request is).
What if you do the request with longitude>110 and <-100 ?
This sounds silly because min is greater than max but this may be a
convention to manage the 180-meridian-crossing subsets and may be it
works with THREDDS Data Server.

We should definitely find a way to handle this subsets without doing 2
different requests.

cheers,

Thomas


On 09/18/2014 11:19 AM, Jolibois Tony wrote:

Dear all,

I have a dataset with a global spatial coverage
(longitude=-180/179.916; latitude=-90/90) served by the netCDF subset
service of Thredds.

If I request data on Pacific ocean, for example longitude=110/260;
latitude=0/70, the subset service gives me a file covering
110/179.916, and not 110/260 (data cut at the end of longitude dimension).

Do you confirm this behavior ? Do I miss something ? If confirmed, it
means that to fulfill the need the user shall make 2 requests and
concatenate ?

Best regards,

Tony

pacific-coupe.png

pacific-entier.png

Tony Jolibois

C.L.S.

Direction Océanographie Spatiale

Parc Technologique du Canal

8-10, rue Hermès

31520 Ramonville St-Agne, FRANCE

Tel: +33 (0)5 61 39 37 97 Fax: +33 (0)5 61 39 37 82



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Fax:   (+33) (0)2 98 22 46 44

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