Thanks John. What would be the most suitable NetCDF attribute to use
as a vertical axis label? From my reading of CF there isn't a
mandatory requirement for an attribute to contain such a label (I
might be wrong). I guess I could look for a standard_name, then a
long_name if there is no standard name?
Cheers, Jon
On Tue, Jan 6, 2009 at 6:05 PM, John Caron <caron@xxxxxxxxxxxxxxxx> wrote:
> Hi Jon:
>
> The most straightforward way is to examine the CoordinateAxis objects. There
> should only be zero or one with AxisType = Height, Pressure, or GeoZ. Usually
> GeoZ is dimensionless, often with a VerticalTransform implementing a CF
> dimensionless vertical coordinate. The units of the vertical CoordinateAxis
> should also be useful.
>
> Of course, theres lots of files in the wild that will only partially follow
> this pattern, but CF files should.
>
> Jon Blower wrote:
>> Hi all,
>>
>> In a GridCoordSystem, is there a way of detecting whether the vertical
>> axis (assuming it exists) is dimensional or dimensionless (e.g.
>> sigma)? I guess I could manually look for the long_name or
>> standard_name attribute, but is there a way that's built-in to
>> Java-NetCDF (I'm on version 4.0)?
>>
>> Cheers, Jon
>>
>
--
Dr Jon Blower
Technical Director, Reading e-Science Centre
Environmental Systems Science Centre
University of Reading
Harry Pitt Building, 3 Earley Gate
Reading RG6 6AL. UK
Tel: +44 (0)118 378 5213
Fax: +44 (0)118 378 6413
j.d.blower@xxxxxxxxxxxxx
http://www.nerc-essc.ac.uk/People/Staff/Blower_J.htm
