I am having problems with the "forecastModelRunSingleCollection" in
thredds catalogs - this collection is based on netcdf files with names
of the type
FORDAILY_startyyyyMMdd_dumpyyyyMMdd.nc
Each file has a time axis of length 1. The dataset is set up like this:
<datasetFmrc name="Test scanfmrc 4" path="fmrc/test/4" >
<metadata inherited="true">
<timeCoverage>
<start>2008-04-09</start>
<end>2008-05-20</end>
</timeCoverage>
</metadata>
<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2
" enhance="true">
<aggregation dimName="runtime"
type="forecastModelRunSingleCollection"
timeUnitsChange="true" >
<scanFmrc location="/opt/local/share/java/tomcat5/content/
thredds/public/topaz/"
regExp=".*FORDAILY.*[0-9]{8}_.*\.nc"
runDateMatcher="#_start#yyyyMMdd"
forecastDateMatcher="#_dump#yyyyMMdd"/>
</aggregation>
</netcdf>
</datasetFmrc>
A collection of files such as this:
FORDAILY_start20080430_dump20080430.nc
FORDAILY_start20080430_dump20080501.nc
FORDAILY_start20080430_dump20080502.nc
FORDAILY_start20080430_dump20080503.nc
FORDAILY_start20080430_dump20080504.nc
FORDAILY_start20080430_dump20080505.nc
FORDAILY_start20080507_dump20080507.nc
FORDAILY_start20080507_dump20080508.nc
FORDAILY_start20080507_dump20080509.nc
FORDAILY_start20080507_dump20080510.nc
FORDAILY_start20080507_dump20080511.nc
FORDAILY_start20080507_dump20080512.nc
Gives me a 2D forecast time and runtime like this:
Dataset {
Float64 valtime[runtime = 2][valtime = 6];
String runtime[runtime = 2];
} fmrc/test/4/Test_scanfmrc_4_fmrc.ncd;
---------------------------------------------
valtime[2][6]
[0], 0.0, 24.0, 48.0, 72.0, 96.0, 120.0
[1], 168.0, 192.0, 216.0, 240.0, 264.0, 288.0
runtime[2]
"2008-04-30T00:00:00Z", "2008-05-07T00:00:00Z"
Seems like the offset is calculated relative to the first "start" date
only? In addition the 2D forecast selection is the only one which
actually gives a data set - all the others (best estimate, constant
offset etc etc) present me with no opendap access link. I should also
mention that the above datasetfmrc will fail if I remove the
timecoverage metadata - then it seems to fail when extracting the
daterange from the data set:
[16/May/2008:14:44:23] ERROR thredds.catalog.InvDatasetFmrc : Error
making catalog for fmrc/test/4
java.lang.NullPointerException
at
ucar
.nc2.thredds.MetadataExtractor.extractDateRange(MetadataExtractor.java:
251)
at
thredds.catalog.InvDatasetFmrc.makeCatalog(InvDatasetFmrc.java:302)
at
thredds.catalog.InvDatasetFmrc.makeCatalog(InvDatasetFmrc.java:151)
at
thredds
.servlet.DataRootHandler.makeDynamicCatalog(DataRootHandler.java:1234)
at
thredds.servlet.DataRootHandler.getCatalog(DataRootHandler.java:1202)
at
thredds
.servlet.DataRootHandler.processReqForCatalog(DataRootHandler.java:1117)
at thredds.servlet.CatalogServlet.doGet(CatalogServlet.java:78)
...
Any hints on how to fix this would be appreciated.
Best Regards,
Knut Lisæter
