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[netCDFJava #AGD-574507]: Problem with grid with units hPa



Hi Tom,

Tom Whittaker wrote:
> We are creating a netCDF file of grids.   One of the variables in the
> file has units of "hPa".  This variable (grid) does not show up in the
> list of valid Fields in the IDV Field Selector.  If the units are
> changed to "1" then the grid shows up.  It is the only grid in the
> file with hPa units, and I note when inspecting this in the ToolsUI,
> it is tagged as being a "coordinate axis", but it is otherwise never
> referenced by other 2D variables in the file.
> 
> If I use NcML to add a "coordinates" attribute (with value "Latitude
> Longitude") to this pressure variable, then it also shows up in the
> Field Selector just fine.  The person generating the file did not
> include the "coordinates" attribute for any of the other 2D variables
> because they displayed without difficulty.

> The file is available (for about a week) at:
> ftp://ftp.ssec.wisc.edu/pub/ssec/tomw/foo.zip

With 2D lat/lon variables without "coordinates" attributes, it has to use units 
or standard names to identify the coordinate variables. In this case, it 
doesn't know not to include the "hPa" variable as a coordinate variable.

So, my guess is that it will require a "coordinate" attribute to work. But, 
I've grabbed the file and will take a closer look later today or tomorrow.
 
Ethan
 
> Thanks for your help....
> 
> tom
> 
> --
> Tom Whittaker
> University of Wisconsin-Madison
> Space Science & Engineering Center (SSEC)
> Cooperative Institute for Meteorological Satellite Studies (CIMSS)
> 1225 W. Dayton Street
> Madison, WIÂ 53706Â USA
> ph: +1 608 262 2759
> 
> 


Ticket Details
===================
Ticket ID: AGD-574507
Department: Support netCDF Java
Priority: Normal
Status: Open


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