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Hi Bob, > How do I read the data? Either via index or via iterator. Here are some example print functions: https://gist.github.com/cwardgar/44e52ea157e1acc73ec54b37388376e5 The iterator approach is more robust, I'd say, but not exactly convenient. > Is there a way to find out the various sizes of the second dimension other > than looking at the sizes of each of the responses for varA[0][*], varA[1][*], ...? Nope, you must get the nested ArrayInt objects and ask them their size. > If a variable uses a vlen dimension, will it always be the rightmost dimension? My gut says "yes" because I can't imagine how I'd define a variable with the vlen dimension on the left, at least in CDL. However, this question is probably better for the netcdf-c list. -Christian On Mon, Jun 20, 2016 at 10:22 AM, Bob Simons - NOAA Federal < bob.simons@xxxxxxxx> wrote: > Thanks for the information. Here's a revised request: > > I have a file with a variable varA[dimA][*], where the rightmost dimension > is a vlen dimension. > 1) How do I read the data? Can/must I make a series of requests: for > varA[0][*], then varA[1][*], ...? Is there an alternative? > 2) Is there a way to find out the various sizes of the second dimension > other than looking at the sizes of each of the responses for varA[0][*], > varA[1][*], ...? > 3) If a variable uses a vlen dimension, will it always be the rightmost > dimension? > > Thank you. > > > On Sat, Jun 18, 2016 at 2:48 PM, Christian Ward-Garrison < > cwardgar@xxxxxxxx> wrote: > >> Hi Bob, >> >> I did some research, and the short answer is that multiple VLEN >> dimensions are not supported. Check out the GitHub issue [1] for my full >> findings. Sorry about that. >> >> Cheers, >> Christian >> >> [1] https://github.com/Unidata/thredds/issues/567 >> >> On Fri, Jun 17, 2016 at 11:33 AM, Bob Simons - NOAA Federal < >> bob.simons@xxxxxxxx> wrote: >> >>> Is there sample code somewhere for reading a multidimensional variable >>> where some of the dimensions are vlen, e.g., myVar[dimA][*][*] ? >>> >>> I found >>> >>> http://www.unidata.ucar.edu/software/thredds/v4.5/netcdf-java/reference/StructureData.html#vlen >>> but the temp variable just has the one dimension. >>> >>> Just calling myVar.read() doesn't work(java.io.IOException) -- I suspect >>> because it would be useless without knowing all the subdimension sizes. >>> >>> Is there a way to get a flattened version of the data and dimensions? >>> e.g., have myVar[dimA][*][*] flattened into >>> a b c myVar >>> 0 0 0 1.2 >>> 0 0 1 1.4 >>> 0 1 0 1.6 >>> 1 0 0 1.1 >>> 1 0 1 1.3 >>> 1 0 2 1.4 >>> 1 1 0 1.7 >>> 1 1 1 1.1 >>> 1 2 0 1.2 >>> >>> Or, can you give me general advice on how to get the data out of a >>> variable like this? >>> Do I need to iterate through the dimA values, and do separate read()s >>> for each value of a, then separate reads for each value of that dimension? >>> >>> Thank you. >>> >>> -- >>> Sincerely, >>> >>> Bob Simons >>> IT Specialist >>> Environmental Research Division >>> NOAA Southwest Fisheries Science Center >>> 99 Pacific St., Suite 255A (New!) >>> Monterey, CA 93940 (New!) >>> Phone: (831)333-9878 (New!) >>> Fax: (831)648-8440 >>> Email: bob.simons@xxxxxxxx >>> >>> The contents of this message are mine personally and >>> do not necessarily reflect any position of the >>> Government or the National Oceanic and Atmospheric Administration. >>> <>< <>< <>< <>< <>< <>< <>< <>< <>< >>> >>> >>> _______________________________________________ >>> NOTE: All exchanges posted to Unidata maintained email lists are >>> recorded in the Unidata inquiry tracking system and made publicly >>> available through the web. Users who post to any of the lists we >>> maintain are reminded to remove any personal information that they >>> do not want to be made public. >>> >>> >>> netcdf-java mailing list >>> netcdf-java@xxxxxxxxxxxxxxxx >>> For list information or to unsubscribe, visit: >>> http://www.unidata.ucar.edu/mailing_lists/ >>> >> >> > > > -- > Sincerely, > > Bob Simons > IT Specialist > Environmental Research Division > NOAA Southwest Fisheries Science Center > 99 Pacific St., Suite 255A (New!) > Monterey, CA 93940 (New!) > Phone: (831)333-9878 (New!) > Fax: (831)648-8440 > Email: bob.simons@xxxxxxxx > > The contents of this message are mine personally and > do not necessarily reflect any position of the > Government or the National Oceanic and Atmospheric Administration. > <>< <>< <>< <>< <>< <>< <>< <>< <>< > >
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