[Esip-documentation] cdm_data_type defintion

[David Neufeld - NOAA Affiliate]

ncISO uses it as well, and calculates geospatial_bounds differently
depending on the featureType.

Dave

On Thu, Feb 19, 2015 at 1:18 PM, Mike McCann via Esip-documentation <
esip-documentation at lists.esipfed.org> wrote:

> I think ERDDAP may be the only software which actually uses this attribute
> in a very specific, programmatic way...
>
>
> The STOQS software also depends on proper values in the featureType
> attribute (though is sometimes able to infer the appropriate featureType
> from cdm_data_type attribute in legacy data sets).
>
> I concur that "CF might/should expand the use of featureType", and make
> sure the semantics align with other vocabularies.
>
> -Mike
>
> --
> Mike McCann
> Software Engineer
> Monterey Bay Aquarium Research Institute
> 7700 Sandholdt Road
> Moss Landing, CA 95039-9644
> Voice: 831.775.1769  Fax: 831.775.1736 http://www.mbari.org
>
> On Feb 19, 2015, at 10:33 AM, Bob Simons - NOAA Federal via
> Esip-documentation <esip-documentation at lists.esipfed.org> wrote:
>
> I think cdm_data_type is a troubled attribute.
> Unidata has released several different lists of CDM data types over the
> years as CDM progressed. Those all still exist at various URLs on the web
> and in Unidata code (some of it obsolete).
> CF has a new(er), closely related featureType attribute
>
> http://cfconventions.org/Data/cf-conventions/cf-conventions-1.6/build/cf-conventions.html#idp6280704
> but it is unfortunately just for Discrete Sampling Geometry types.
>
> I think ACDD 1.3 chose to avoid dealing with this in hopes that CF will
> solve the problem. E.g., CF might/should expand the use of featureType.
>
> I think ERDDAP may be the only software which actually uses this attribute
> in a very specific, programmatic way, which is vocabulary which is a combo
> of
> * the values that CF's featureType uses (from just before CF created the
> featureType attribute), e.g., TimeSeries.
> * a few other Unidata CDM types, e.g., Grid
> * "Other"
>
> http://coastwatch.pfeg.noaa.gov/erddap/download/setupDatasetsXml.html#cdm_data_type
>
> I'm sorry there isn't a better answer.
>
>
> On Thu, Feb 19, 2015 at 9:51 AM, Armstrong, Edward M (398G) via
> Esip-documentation <esip-documentation at lists.esipfed.org> wrote:
>
>>
>>  Hi folks
>>
>>  I’ve come across a request for the proper usage of the ACDD attribute
>> cdm_data_type.  This has been retained in  ver 1.3.   But what are the
>> examples of its implementation ? According to:
>>
>>
>> http://www.unidata.ucar.edu/software/thredds/current/tds/catalog/InvCatalogSpec.html#dataType
>>
>>  attribute examples could “Grid” ,“Swath”, “Point" etc.  But some
>> popular implementation embedded in existing examples use a lowercase syntax
>> such as “swath”
>>
>>  Which is the proper implementation, upper vs lowercase ?  Or perhaps
>> this is still nebulous.  I did find this note from Bob Simmons in our
>> recent ACCD v1.3 discussion on a google doc spreadsheet (but I don’t
>> remember the consensus  on it):
>>
>>  cdm_data_type should not be tied to
>>
>> http://www.unidata.ucar.edu/software/thredds/current/tds/catalog/InvCatalogSpec.html#dataType
>> which is out-of-date and obsolete
>>
>>  Any insight appreciated.
>>
>>  -ed
>>
>>  Ed Armstrong
>> JPL Physical Oceanography DAAC
>> 818 519-7607
>>
>>
>>
>>
>> _______________________________________________
>> Esip-documentation mailing list
>> Esip-documentation at lists.esipfed.org
>> http://lists.deltaforce.net/mailman/listinfo/esip-documentation
>>
>>
>
>
> --
> Sincerely,
>
> Bob Simons
> IT Specialist
> Environmental Research Division
> NOAA Southwest Fisheries Science Center
> 99 Pacific St., Suite 255A      (New!)
> Monterey, CA 93940               (New!)
> Phone: (831)333-9878            (New!)
> Fax:   (831)648-8440
> Email: bob.simons at noaa.gov
>
> The contents of this message are mine personally and
> do not necessarily reflect any position of the
> Government or the National Oceanic and Atmospheric Administration.
> <>< <>< <>< <>< <>< <>< <>< <>< <><
>
>  _______________________________________________
> Esip-documentation mailing list
> Esip-documentation at lists.esipfed.org
> http://lists.deltaforce.net/mailman/listinfo/esip-documentation
>
>
>
> _______________________________________________
> Esip-documentation mailing list
> Esip-documentation at lists.esipfed.org
> http://lists.deltaforce.net/mailman/listinfo/esip-documentation
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.deltaforce.net/pipermail/esip-documentation/attachments/20150219/6d100338/attachment.html>