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20020327: subsetting capabilities of netCDF

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  • Subject: 20020327: subsetting capabilities of netCDF
  • Date: Wed, 27 Mar 2002 12:52:51 -0700
>From:  "Smith, Matt" <address@hidden>
>Organization:  University of Alabama in Huntsville
>Keywords:  200203271929.g2RJT9a00009 netCDF

Matt,

>Thanks again for your helpful info about netCDF this morning.

No worries.

>But (alas) I do have another question: - How would you answer this question?
>
>Does the format contain information to allow subsetting?

Yes, absolutely.  The netCDF interface allows for one to ask for hyper-slabs
of data (portions of 3D/4D arrays) with a single call.

>Allowing first for the fact that it's NOT a "format", and for the fact that
>there's no "prescribed" location for Latitude, Longitude, Time, etc. - my
>answer would be: 
>"Not inherently.  However, community-defined netCDF conventions can be used
>to write code that allows subsetting."
>
>Would you answer differently?

Yes, if "subsetting" means the extraction of a portion of an extended
data object.

>Thanks again,
>Matt
>
>Matt Smith
>University of Alabama in Huntsville
>Information Technology & Systems Center
>at the National Space Science and Technology Center
>320 Sparkman Dr.
>Huntsville, AL 35805
>ph 256-961-7809
>fax 256-961-7859
>e-mail address@hidden

Tom
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