Re: [netcdf-java] Unable to get a GeoGrid from a GridDataset

• To: Ben Caradoc-Davies <ben@xxxxxxxxxxxx>
• Subject: Re: [netcdf-java] Unable to get a GeoGrid from a GridDataset
• From: James Adams - NOAA Affiliate <james.adams@xxxxxxxx>
• Date: Fri, 8 Jul 2016 11:45:43 -0400

​I appreciate the help I've had from this list on this, my apologies for my
delayed response.​

The below solved my issue -- thanks for your help, Ben.

​In summary it looks like you can get a GeoGrid for a variable if 1) the
variable has lat and lon dimensions, and 2) the corresponding lon and lat
coordinate variables have units "degrees_north" and "degrees_east"
respectively​. Others have suggested that I also should include the
attribute "coordinates" = "time lon lat", but this doesn't look to be
required for a GeoGrid.

Is the above correct, and/or is there a document that more fully explains
this?

​--James​


On Sat, Jun 25, 2016 at 4:38 PM, Ben Caradoc-Davies <ben@xxxxxxxxxxxx>
wrote:

> James,
>
> these units are invalid. "degrees_north" is a unit of latitude, and
> "degrees_west" is a unit of longitude. This file has them transposed. I do
> not know if this is the cause of your problem, but it seems suspicious to
> me.
>
> Kind regards,
> Ben.
>
>
> On 26/06/16 05:41, James Adams - NOAA Affiliate wrote:
>
>>         float lon(lon=1405);
>>           :long_name = "longitude";
>>           :standard_name = "longitude";
>>           :units = "degrees_north";
>>
>>         float lat(lat=621);
>>           :long_name = "latitude";
>>           :standard_name = "latitude";
>>           :units = "degrees_west";
>>
>
> --
> Ben Caradoc-Davies <ben@xxxxxxxxxxxx>
> Director
> Transient Software Limited <http://transient.nz/>
> New Zealand
>

• References:
  • [netcdf-java] Unable to get a GeoGrid from a GridDataset
    • From: James Adams - NOAA Affiliate
  • Re: [netcdf-java] Unable to get a GeoGrid from a GridDataset
    • From: Ben Caradoc-Davies