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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
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Hi Taylor: On Jan 8, 2013, at 9:46 AM, Taylor Binnington <tbinnington@xxxxxxxxx> wrote: > Roy, I was confused by your comment: > >"If you had gotten it from opendap, then it wouldn't be an hdf file. > >Moreover, there is the option to access the OpeNDAP server directly from the > >NetCDF library, which is what people have been trying to tell you." > > Yet looking at an OPeNDAP directory > (http://goldsmr2.sci.gsfc.nasa.gov/opendap/MERRA/MAT1NXSLV.5.2.0/1979/01/contents.html), > each file appears to be an HDF file. My best suggestion is you read up on OPeNDAP, and how ti works as a service. OPeNDAP can have as the basis of its service any number file formats. What it does when it sends the request over the internet is transform each of these internal representations into a common external representation, which is an OpeNDAP binary. The latest versions of the netcdf library take it one step further, by making the remote files appear as netcdf files, and to be accessible by netcdf api commands. But even in this case, while the netcdf library hides the details, what gets transported is an OpeNDAP binary. I would repeat my suggestion that you more closely read posting guides, in particular what r-help sends you to, in particulat http://www.chiark.greenend.org.uk/~sgtatham/bugs.html and http://www.catb.org/~esr/faqs/smart-questions.html. If you gave a small, complete program that can reproduce the problem that you are finding, than people have something specific that they can comment on. The error you are reporting could be from so many issues, because it is unclear what steps you have taken. Regards, -Roy ********************** "The contents of this message do not reflect any position of the U.S. Government or NOAA." ********************** Roy Mendelssohn Supervisory Operations Research Analyst NOAA/NMFS Environmental Research Division Southwest Fisheries Science Center 1352 Lighthouse Avenue Pacific Grove, CA 93950-2097 e-mail: Roy.Mendelssohn@xxxxxxxx (Note new e-mail address) voice: (831)-648-9029 fax: (831)-648-8440 www: http://www.pfeg.noaa.gov/ "Old age and treachery will overcome youth and skill." "From those who have been given much, much will be expected" "the arc of the moral universe is long, but it bends toward justice" -MLK Jr.
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