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Simon, That looks like it should work. Can you send me or point me to the actual data files so I can try to reproduce with your NCML? Ryan On Fri, Feb 27, 2015 at 9:12 AM, Wright, Simon M. <smw@xxxxxxxxx> wrote: > Dear All > > > > I’m trying to set up a nested aggregation to use in THREDDS 4.5.2 but am > having some issues, so wonder if anyone can help. > > > > I’m following the Nested Aggregation example at > http://www.unidata.ucar.edu/software/thredds/current/netcdf-java/ncml/Aggregation.html > > and have created the following ncml file: > > > > <?xml version='1.0' encoding='UTF-8'?> > > <netcdf xmlns='http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2'> > > <aggregation dimName="time" type="joinExisting"> > > <netcdf> > > <aggregation type="union"> > > <netcdf > location="../detail/MORECSDailyRf19610101to20131231.nc" /> > > <netcdf > location="../detail/MORECSDailySun19610101to20131231.nc" /> > > <netcdf > location="../detail/MORECSDailyTemp19610101to20131231.nc" /> > > <netcdf > location="../detail/MORECSDailyVapP19610101to20131231.nc" /> > > <netcdf > location="../detail/MORECSDailyWSp19610101to20131231.nc" /> > > </aggregation> > > </netcdf> > > <netcdf> > > <aggregation type="union"> > > <netcdf > location="../detail/MORECSDailyRf20140101to20141231.nc" /> > > <netcdf > location="../detail/MORECSDailySun20140101to20141231.nc" /> > > <netcdf > location="../detail/MORECSDailyTemp20140101to20141231.nc" /> > > <netcdf > location="../detail/MORECSDailyVapP20140101to20141231.nc" /> > > <netcdf > location="../detail/MORECSDailyWSp20140101to20141231.nc" /> > > </aggregation> > > </netcdf> > > </aggregation> > > </netcdf> > > > > The data in the netCDF files is daily data with time values being relative > to 01/01/1961. For the files suffixed with 19610101to20131231.nc there > are 19358 values on the time dimension with values ranging between 0.0 and > 19357.0. For those files suffixed 20140101to20141231.nc there are 365 > values on the time dimension with values ranging between 19358.0 and > 19722.0. All other dimensions in the netCDF files – eastings and northings > on the British National Grid- are the same. > > > > When I check the NcML file using the ToolsUI version 4.5 using NcML and > Aggregation tabs I get the following error: > > > > java.nio.file.InvalidPathException: Illegal char <:> at index 4 > > > > However, when I check the ncml file using the ToolsUI version 4.3 again > using the NcML and Aggregation tabs I see the aggregation that I expect > with 5 union-ed variables with a time dimension having 19358 + 365 = 19723 > values. The following summary is displayed in the ToolsUI 4.3 interface: > > > > Type=joinExisting > > dimName=time > > Datasets > > > file:F:/THREDDS/MORECS/20150227/aggregation/DetailWholeDataset.ncml#4138984 > range=[0:19358) (19358) > > > file:F:/THREDDS/MORECS/20150227/aggregation/DetailWholeDataset.ncml#25192620 > range=[19358:19723) (365) > > timeUnitsChange=false > > totalCoords=19723 > > > > Aggregation Variables > > time(time=19723) > > rainfall_amount(time=19723, y=28, x=17) > > duration_of_sunshine(time=19723, y=28, x=17) > > air_temperature(time=19723, y=28, x=17) > > water_vapor_partial_pressure_in_air(time=19723, y=28, x=17) > > wind_speed(time=19723, y=28, x=17) > > > > Cache Variables > > time (ucar.nc2.ncml.AggregationOuterDimension$CoordValueVar) > > > > Variable Proxies > > lat cached > > lon cached > > crs cached > > rainfall_amount proxy ucar.nc2.ncml.AggregationExisting > > duration_of_sunshine proxy ucar.nc2.ncml.AggregationExisting > > air_temperature proxy ucar.nc2.ncml.AggregationExisting > > water_vapor_partial_pressure_in_air proxy > ucar.nc2.ncml.AggregationExisting > > wind_speed proxy ucar.nc2.ncml.AggregationExisting > > x proxy ucar.nc2.dataset.CoordinateAxis1D > > y proxy ucar.nc2.dataset.CoordinateAxis1D > > time proxy ucar.nc2.dataset.CoordinateAxis1D > > > > So is there an issue with trying to check nested aggregation NcML files > using version 4.5 of the netCDF ToolsUI? > > > > > > > > Furthermore, when I copy the netCDF files and NcML file to a THREDDS 4.5.2 > server, restart it, and check the nested aggregation using the OPeNDAP > interface the time dimension is displayed as having 38716 values, double > the number of time values I’m expecting. When I download the time values > using the OPeNDAP interface the time values returned are 0.0, 1.0, 2.0, …, > 19355.0, 19356.0, 19357.0, 0.0, 1.0, 2.0, …, 19355.0, 19356.0, 19357.0. > > > > Similarly, when I use the NetCDFSubset interface I can download netCDF > files for dates between 01/01/1961 to 31/12/2013 but when I try to download > a netCDF file for any dates between 01/01/2014 to 31/12/2014 I get a > “Requested time 2014-01-01T00:00:00Z does not intersect actual time range > 1961-01-01T00:00:00Z – 2013-12-31T00:00:00Z” error. > > > > Also, when I use the Godiva2 viewer to view some of the data the date > range on the calendar widget allows values between 01/01/1961 to 31/12/2013 > to be visualised but not any dates between 01/01/2014 to 31/12/2014. > > > > Therefore does anyone know if there are issues using a NcML Nested > Aggregation with THREDDS 4.5.2? Or am I’m specifying the NcML Nested > Aggregation incorrectly? > > > > > > > > Many thanks for any help that anyone can provide. > > > > Best wishes, Simon. > > > > > > > > Simon Wright > > Centre for Ecology & Hydrology Lancaster > ------------------------------ > This message (and any attachments) is for the recipient only. NERC is > subject to the Freedom of Information Act 2000 and the contents of this > email and any reply you make may be disclosed by NERC unless it is exempt > from release under the Act. Any material supplied to NERC may be stored in > an electronic records management system. > ------------------------------ > > _______________________________________________ > thredds mailing list > thredds@xxxxxxxxxxxxxxxx > For list information or to unsubscribe, visit: > http://www.unidata.ucar.edu/mailing_lists/ > -- Ryan May Software Engineer UCAR/Unidata Boulder, CO
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