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[netCDFJava #RIZ-451320]: why can't this be read as a grid

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  • Subject: [netCDFJava #RIZ-451320]: why can't this be read as a grid
  • Date: Fri, 16 May 2014 16:39:10 -0600
The problem is that the file has 

    double lat(lat=94);
      :standard_name = "grid_latitude";
      :long_name = "Latitude";
      :units = "degrees_north";
      :axis = "Y";

    double lon(lon=192);
      :standard_name = "grid_longitude";
      :long_name = "Longitude";
      :units = "degrees_east";
      :axis = "X";

But standard_name "grid_latitude"; and "grid_longitude" is used for rotated lat 
lon, see:

  http://cfconventions.org/standard-names-26.html


the CDM is interpreted this as "rotated lat lon" projection, but fails because 
it needs a grid_mapping.

so 

 1) is this latlon or rotated lat/lon".
 2) did original file have these standard_names or did CDO add them? 

John




> It doesn't like the standard_name for latitude and longitude (using ncml
> to remove them makes the grid readable).  I don't have the ability to
> remove them in the workflow, and this seems like a bug.
> 
> Don
> 
> On 5/16/14 3:35 PM, Unidata netCDF Java Support wrote:
> > There's confusion somewhere, ToolsUI is looking for a projection instead
> > of recognizing the lat lon coords.
> >
> > -Lansing
> >
> > On 5/16/2014 12:55 PM, Don Murray (NOAA Affiliate) wrote:
> >> New Ticket: why can't this be read as a grid
> >>
> >> Hi-
> >>
> >> I have a netCDF file that I created using the Climate Data Operators
> >> (CDO) package by subsetting a larger file.  The original file can be
> >> read into the IDV/ToolsUI, but the subset cannot (is not recognized as a
> >> grid).  I don't see anything obviously wrong with the file, except that
> >> maybe the CDM is getting confused by the use of x and y?
> >>
> >> Why doesn't the CDM recognize this as a grid?
> >>
> >> Don
> >
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: RIZ-451320
> > Department: Support netCDF Java
> > Priority: Normal
> > Status: Open
> >
> 
> --
> Don Murray
> NOAA/ESRL/PSD and CU-CIRES
> 303-497-3596
> http://www.esrl.noaa.gov/psd/people/don.murray/
> 
> 

Ticket Details
===================
Ticket ID: RIZ-451320
Department: Support netCDF Java
Priority: Normal
Status: Open