John,The test that is failing is access to the F-TDS version of the data URL for the data sets installed with LAS. When LAS starts is creates a small journal file in the directory you chose in the configuration step which sets up access to that data set via F-TDS. When I click on the LAS OPeNDAP link (http://data.nodc.noaa.gov/thredds/dodsC/las/) I see the default data sets instead of those that are configured into your LAS.
I'm not sure why those files are not being written at start up, but perhaps there is a permission problem with the directory vis a vis the process that is running tomcat. F-TDS and LAS need to write in that directory to do their work. You can remove the default data set directories now that you have your own data configured, but you should see new directories created when LAS starts.
Another possibility is that the FerretBackendConfig.xml file and the FerretConfig.xml file in F-TDS that are being used are pointing to the wrong directory for deployment on the public server.
Roland On 12/09/2010 09:32 AM, John Relph wrote:
Folks,
I'm having a problem with LAS 7.2 Beta 2 and F-TDS. LAS gives the
following error when using the functions under "Apply analysis":
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A component needed for your request is down or was not installed.
If you are the site adminstrator, verify that your F-TDS installation is
working correctly, then restart your servlet container (Tomcat) or
reinit your server from the admin page.
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The problem can be reproduced by following these steps, using the NODC
LAS at http://data.nodc.noaa.gov/las/ :
1) Choose the World Ocean Atlas 09> 1 degree> nitrate> monthly>
Nitrate dataset
2) Click on "Apply analysis" link at the bottom.
3) Choose the "Average" Analysis type and the "Area" Analysis region
type (though other choices result in the same error)
4) Click on "Update Plot". The error shows up in the graph area.
Ferret is installed as part of LAS and TDS, as per
http://ferret.pmel.noaa.gov/LAS/documentation/installer-documentation/installation/installing-and-integrating-tds-with-las/
Have I missed something?
-- John