Re: [thredds] Providing data access to GIS users

Hi Jay,

Are you running the latest TDS (4.2.5)?

When you access the TDS WCS service in ArcGIS, what happens? What does
the error message say? Do you see any corresponding messages in the TDS
logs ($TOMCAT_HOME/content/thredds/logs/threddsServlet.log or

For the NetCDF Subset Service (NCSS), make sure you have enabled the
NCSS in your threddsConfig.xml file. Documentation on enabling the NCSS
are at


If you have it enabled, then check if you are getting any log messages
in the TDS logs.


On 3/16/2011 5:38 PM, Jay Alder wrote:
> Hello all, I am new to using TDS, so I apologize if some of my question
> are obvious. I've been tasked to look into ways of providing regional
> climate model data (all NetCDFs) to GIS users. I had hoped TDS would be
> able to provide this function through WCS, but it doesn't appear to work
> in ArcGIS (I tried version 10 this morning). The WCS service loads and
> lists the model variables, but when I add the layer it more or less says
> "error".  I tried Environmental Data Connector (EDC), but without
> administrative rights I was unable to install the ArcMap plugin and had
> to use the stand alone version. I ran into two problems: 1) it didn't
> list any of the 3D or 4D variables (only 2D) and 2) it removed the CF
> projection information (Lambert_Conformal), which unacceptable.
> In short, what is the preferred method for providing access to GIS users
> other than having them download the whole file? I'm looking for a
> solution other than just FTP. I also tried enabling NetCDF sub-setting,
> but my THREDDS servlet (version 4.2) gives a 404 error page
> for dataset.html (even through OpenDAP and HTTPServer works). If they
> can sub-set the file to only download certain variables it would make
> the downloads a lot lighter. I can also write a GUI application that
> would automatically include the projection info and related variables.
> I'm sorry if these questions are silly or have already been covered, but
> we have on the order of 250 Tb of regional climate data that we're
> trying to make accessible to users (which are primarily GIS folks).
> Thanks
> -- 
> Jay Alder
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