Re: [netcdf-java] ncWMS and ellipsoid-support in CF-1.2

• To: "Heiko Klein" <Heiko.Klein@xxxxxx>
• Subject: Re: [netcdf-java] ncWMS and ellipsoid-support in CF-1.2
• From: "Jonathan Blower" <j.d.blower@xxxxxxxxxxxxx>
• Date: Wed, 10 Mar 2010 13:38:20 +0000

Hi Heiko,

This is a good question.  ncWMS relies on netcdf-java for converting coords to 
wgs84 lat lon, so I'm copying this to the mailing list in the hope that someone 
can enlighten me about ellipsoid support in the library.

Cheers, Jon

-----Original Message-----
From: Heiko Klein <Heiko.Klein@xxxxxx>
Sent: 09 March 2010 08:54
To: Jonathan Blower <j.d.blower@xxxxxxxxxxxxx>
Subject: ncWMS and ellipsoid-support in CF-1.2

Hi Jon,

I currently try to visualize some satellite ice-maps over the north-pole
with ncWMS, but the data seems to be displaced by some 10-30km compared
with the land-maps (generated by mapserver).

While geo-tools and therefore ncWMS support lots of coordinate reference
systems for the presented maps, the support for ellipsoids was only
added to CF-1.2. Do you know if ncWMS already supports the CF-1.2
features like semi_major_axis/semi_minor_axis for input-files, or does
it assume the CF-1.0 spherical earth with 6371km radius?

Best regards,

Heiko

-- 
Dr. Heiko Klein                              Tel. + 47 22 96 30 00
Development Section / IT Department          Fax. + 47 22 69 63 55
Norwegian Meteorological Institute           http://www.met.no
P.O. Box 43 Blindern  0313 Oslo NORWAY

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  • Re: [netcdf-java] ncWMS and ellipsoid-support in CF-1.2
    • From: Heiko Klein