Dear Jonathan, Thanks for your reply. In these case the feature type is a trajectory, so the latitude and longitude are auxiliary coordinates.
You said that for auxiliary coordinates it could be ok, Would this mean that it could be added to the CF conventions? Best regards, Kristian On 5 May 2015 at 18:58, Jonathan Gregory <[email protected]> wrote: > Dear Kristian > > Ancillary variables are only for data variables in the current convention. > It wouldn't be illegal to use the attribute on coord variables, but CF > doesn't define what that would mean. (CF always permits any > non-standardised > attributes.) > > I wonder whether these are 1D coord variables (in the Unidata sense) or > aux coord vars (named by the coordinates attribute)? In the latter case, it > could be OK, because other data variables could be named as aux coord vars. > > Best wishes > > Jonathan > > > ----- Forwarded message from Kristian Sebasti??n <[email protected]> > ----- > > > Date: Thu, 30 Apr 2015 08:43:54 +0200 > > From: Kristian Sebasti??n <[email protected]> > > To: [email protected] > > Subject: [CF-metadata] Ancillary variables in coordinate variables > (latitude, > > longitude, ...) > > > > Dear CF community, > > > > We have some dataset with quality controls applied to the coordinate > > variables, such as latitude and longitude coordinate. The result are > > quality control variables that we associate as ancillary variables of the > > coordinate variables with the ancillary_variables attribute. For example, > > the LAT coordinate variable has the ancillary variable QC_LAT. The > dataset > > > http://thredds.socib.es/thredds/dodsC/drifter/surface_drifter/drifter_svp052-ime_svp017/L1/2014/dep0001_drifter-svp052_ime-svp017_L1_2014-05-25.nc > > > > The cf-conventions clarifies the use of the ancillary_variables attribute > > for data variables but not for coordinate variables. My question is, Is > the > > ancillary_variables attribute in coordinates variables compliant with the > > cf-conventions? > > > > Best regards, > > > > Kristian > > > > -- > > > > Kristian Sebastian Blalid > > SOS Division: Data Center Technical > > Tel: 971439860 - Fax: 971439979 > > E-mail: [email protected] > > > > > _______________________________________________ > > CF-metadata mailing list > > [email protected] > > http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata > > > ----- End forwarded message ----- > _______________________________________________ > CF-metadata mailing list > [email protected] > http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata > -- Kristian Sebastian Blalid SOS Division: Data Center Technical Tel: 971439860 - Fax: 971439979 E-mail: [email protected]
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