This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
Hi Dan: I assume you've seen these docs: http://motherlode.ucar.edu:8080/thredds/docs/NcML.htm http://www.unidata.ucar.edu/software/netcdf/ncml/v2.2/Aggregation.html ?? Anyway, you dont need scan, you can just list all the datasets <netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2"> (1)<dimension name="time" length="0"/> <variable name="time" type="int" shape="time"> <attribute name="units" value="months since 2000-6-16 6:00"/> <attribute name="_CoordinateAxisType" value="Time" /> </variable> (2)<aggregation dimName="time" type="joinNew"> (3) <variableAgg name="T"/> (4) <netcdf location="file:test/data/ncml/nc/time0.nc" coordValue="0"/> <netcdf location="file:test/data/ncml/nc/time1.nc" coordValue="1"/> <netcdf location="file:test/data/ncml/nc/time2.nc" coordValue="2"/> </aggregation> </netcdf>see
http://www.unidata.ucar.edu/software/netcdf/ncml/v2.2/Aggregation.html#joinNew lemme know if that helps... Daniel Holloway wrote:
Hi John,I'm setting up a TDS to replace our older Aggregation Server. I've reviewed the documentation you have, at least all the links that I could find/follow. My question is does the new aggregation configuration require the use of 'scan', or can I setup the configuration file similarly to the old way? If so, would you have any examples I could look at for type 'join-new', that is where I'm creating a new dimension. The typical new 'time' dimension, hopefully expressible using the old 'coord=' attribute.Thanks, Dan