Nathan, I took your same request, but changed the horizontal stride from 1 to 100 (horizStride=100) http://thredds.ucar.edu/thredds/ncss/grib/NCEP/GFS/Global_0p25deg/best?var=u-component_of_wind_isobaric&var=v-component_of_wind_isobaric&horizStride=100&time_start=2016-06-13T00%3A00%3A00Z&time_end=2016-07-02T06%3A00%3A00Z&timeStride=1&vertCoord=&addLatLon=true&accept=netcdf4 It took 12 minutes, but successfully completed the request, delivering a 2MB netcdf4 file which I've attached and placed here: http://geoport-dev.whoi.edu/thredds/catalog/usgs/data2/rsignell/test/catalog.html?dataset=usgs/data2/rsignell/test/best.nc Checking out the DDS at http://geoport-dev.whoi.edu/thredds/dodsC/usgs/data2/rsignell/test/best.nc.dds I see that you are asking for 117 time steps, and there are 31 vertical levels in these variables. Did you really want all that? Your original request (with horizStride=1) would have been a request for 100x100=10,000 times more data, or roughly 20GB of data. Perhaps that's why it crapped out? But I agree the original error message you received was not very informative. -Rich On Thu, Jun 16, 2016 at 1:18 PM, Nathan Potter <ndp@xxxxxxxxxxx> wrote: > > I used this form: > > > http://thredds.ucar.edu/thredds/ncss/grib/NCEP/GFS/Global_0p25deg/best/dataset.html > > To construct this NetCDF Subset Service request: > > > http://thredds.ucar.edu/thredds/ncss/grib/NCEP/GFS/Global_0p25deg/best?var=u-component_of_wind_isobaric&var=v-component_of_wind_isobaric&horizStride=1&time_start=2016-06-13T00%3A00%3A00Z&time_end=2016-07-02T06%3A00%3A00Z&timeStride=1&vertCoord=&addLatLon=true&accept=netcdf4 > > Which returns the following remarkably cryptic message: > > first (-66) must be >= 0 > > Does anybody have some thoughts as to what I might change to make the request > successful, or to get a more understandable message? > > > Thanks, > > Nathan > > > = = = > Nathan Potter ndp at opendap.org > OPeNDAP, Inc. +1.541.231.3317 > > _______________________________________________ > 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. > > > thredds mailing list > thredds@xxxxxxxxxxxxxxxx > For list information or to unsubscribe, visit: > http://www.unidata.ucar.edu/mailing_lists/ -- Dr. Richard P. Signell (508) 457-2229 USGS, 384 Woods Hole Rd. Woods Hole, MA 02543-1598
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