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Re: phone message -- sample XML to follow (here it is)

Hi Kevin, Steve:

You should try putting the ncoords attribute on the outer aggregation:

            <netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2"; 
ncoords="36500">
              <aggregation type="union">
                 <netcdf 
location="file:/data/gfdl_cm2_0/CM2Q-d2_1PctTo4x_j1/pp/atmos/ts/daily/pr_A2.00010101-01001231.nc"
   />
                 <netcdf 
location="file:/data/gfdl_cm2_0/CM2Q-d2_1PctTo4x_j1/pp/atmos/ts/daily/tasmax_A2.00010101-01001231.nc"
  />
                 <netcdf 
location="file:/data/gfdl_cm2_0/CM2Q-d2_1PctTo4x_j1/pp/atmos/ts/daily/tasmin_A2.00010101-01001231.nc"
  />
              </aggregation>
            </netcdf>

let me know if that helps.

Id like to test this nested aggregation as a use case . Can I get those 9 
files? thanks.


Steve Hankin wrote:
(This is a continuation of the conversation that Kevin O'Brien started with you.) 

Hi John,
Below is the ncML and TDS configuration information. It all "works" ... except the caching. Any clues? 

     - Steve

===

This from threddsConfig.xml

  <AggregationCache>
    
<dir>/home/pmel/DataPortal/apache-tomcat-5.5.25/content/thredds/cacheAged/</dir>
    <scour>24 hours</scour>
    <maxAge>90 days</maxAge>
</AggregationCache> 

===
And this is the latest ncML that Kevin tested: "It took nearly two minutes to open the aggregation the first time. After that, accesses were quick -- evidently caching was working. Then I restarted the tomcat server, and again it took nearly two minutes to open the aggregation. I could see that the cache file in the caching directory was again updated after the second tomcat restart (ie, the cache was rewritten rather than used)..." 

<catalog name="test IPCC Datasets"
xmlns="http://www.unidata.ucar.edu/namespaces/thredds/InvCatalog/v1.0"; 
        xmlns:xlink="http://www.w3.org/1999/xlink";>
<service name="thisDODS3" serviceType="OpenDAP" base="/thredds/dodsC/" /> <dataset ID="CM2Q-d2_1PctTo4x_j1 atmos daily all vars 00010101-03001231 test" name="CM2Q-d2_1PctTo4x_j1 atmos daily all vars 00010101-03001231 test" urlPath="ipcc_ar4_CM2.0_R1_1to4x-0_daily_atmos_00010101-03001231_test"> 
        <serviceName>thisDODS3</serviceName>
<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";> 
          <aggregation dimName="time" type="joinExisting">
<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";> 
               <aggregation type="union">
<netcdf location="file:/data/gfdl_cm2_0/CM2Q-d2_1PctTo4x_j1/pp/atmos/ts/daily/pr_A2.00010101-01001231.nc" ncoords="36500" /> <netcdf location="file:/data/gfdl_cm2_0/CM2Q-d2_1PctTo4x_j1/pp/atmos/ts/daily/tasmax_A2.00010101-01001231.nc" ncoords="36500" /> <netcdf location="file:/data/gfdl_cm2_0/CM2Q-d2_1PctTo4x_j1/pp/atmos/ts/daily/tasmin_A2.00010101-01001231.nc" ncoords="36500" /> 
               </aggregation>
             </netcdf>
<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";> 
               <aggregation type="union">
<netcdf location="file:/data/gfdl_cm2_0/CM2Q-d2_1PctTo4x_j1/pp/atmos/ts/daily/pr_A2.01010101-02001231.nc" ncoords="36500" /> <netcdf location="file:/data/gfdl_cm2_0/CM2Q-d2_1PctTo4x_j1/pp/atmos/ts/daily/tasmax_A2.01010101-02001231.nc" ncoords="36500" /> <netcdf location="file:/data/gfdl_cm2_0/CM2Q-d2_1PctTo4x_j1/pp/atmos/ts/daily/tasmin_A2.01010101-02001231.nc" ncoords="36500" /> 
               </aggregation>
             </netcdf>
<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";> 
               <aggregation type="union">
<netcdf location="file:/data/gfdl_cm2_0/CM2Q-d2_1PctTo4x_j1/pp/atmos/ts/daily/pr_A2.02010101-03001231.nc" ncoords="36500"/> <netcdf location="file:/data/gfdl_cm2_0/CM2Q-d2_1PctTo4x_j1/pp/atmos/ts/daily/tasmax_A2.02010101-03001231.nc" ncoords="36500"/> <netcdf location="file:/data/gfdl_cm2_0/CM2Q-d2_1PctTo4x_j1/pp/atmos/ts/daily/tasmin_A2.02010101-03001231.nc" ncoords="36500" /> 
               </aggregation>
             </netcdf>
          </aggregation>
        </netcdf>
      </dataset>

</catalog>




Steve Hankin wrote:

Hi John,
We're at the phone number in the signature line below. Will follow this email shortly with some XML fragments ... hoping maybe you have a suggestion. 

   - Steve



--
Steve Hankin, NOAA/PMEL -- address@hidden
7600 Sand Point Way NE, Seattle, WA 98115-0070
ph. (206) 526-6080, FAX (206) 526-6744

"The only thing necessary for the triumph of evil is for good men
to do nothing." -- Edmund Burke