Etienne, Rutger, I can reproduce on windows with 32 bit 1.9 branch and 1.9.1 from Tamas' site. In fact, I couldn't open any datasets.
kss -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Etienne Tourigny Sent: Friday, June 08, 2012 9:10 AM To: Rutger Cc: [email protected] Subject: Re: [gdal-dev] Reading a NetCDF file with python (not recognised as a supported dataset name Rutger, There should not be any difference when using the python bindings. If gdalinfo can read it the python bindings should also. I cannot reproduce your problem using gdal-1.9.1 under linux. Which exact version are you using? By the way, the vrtfile in unnecessary, because GDAL's Open accepts the NETCDF:file.nc:variable syntax. Try adding this to your script and send the result back here gdal.SetConfigOption( 'CPL_DEBUG', 'ON' ) also try gdal_info.exe -stats NETCDF:LPRM-TMI_L3_DY_SOILM3_V001-20120411T144114Z_20120102.nc:soil_moisture_x this actually reads the file contents and not just the metadata. If it fails then something is wrong. you should see STATISTICS_MAXIMUM=99 STATISTICS_MEAN=21.746993313128 STATISTICS_MINIMUM=0 STATISTICS_STDDEV=20.100893016522 Etienne On Fri, Jun 8, 2012 at 9:00 AM, Rutger <[email protected]> wrote: > Dear list, > > I am trying to open a NetCDF file with the Python bindings. My GDAL > 1.9 build (Win32 from Tamas) shows the NetCDF driver when i run > "gdalinfo --formats", so it should be possible. > > When using the pre-build command-line utilities all works well. But > when i move to Python i get the message: > /" ... does not exist in the file system, and is not recognised as a > supported dataset name."/ I dont have the slightest clue about what > i'm doing wrong. > > I have simplified the problem to 3 steps: > 1. Use gdal_translate to select a subdataset and output to VRT 2. Read > the VRT in Python with gdal.Open() 3. Use gdal_translate to convert > the VRT to a Geotiff > > Step 1 & 3 work well, but 2 fails. Is there some limitation of the > Python bindings regarding NetCDF? The script runs fine if i replace > the NetCDF with a Geotiff file. > > Any help would be appreciated. > > An example NetCDF i used can be found at: > ftp://hydro1.sci.gsfc.nasa.gov/data/s4pa/WAOB/LPRM_TMI_DY_SOILM3.001/2 > 012/05/ > ftp://hydro1.sci.gsfc.nasa.gov/data/s4pa/WAOB/LPRM_TMI_DY_SOILM3.001/2 > 012/05/ > > Below is the Python script i have used for exploring the issue: > > import os > try: > from osgeo import gdal > except ImportError: > import gdal > > netcdffile = > "NETCDF:LPRM-TMI_L3_DY_SOILM3_V001-20120411T144114Z_20120102.nc:soil_moisture_x" > vrtfile = "LPRM-TMI_L3_DY_SOILM3_V001-20120411T144114Z_20120102.vrt" > tiffile = "LPRM-TMI_L3_DY_SOILM3_V001-20120411T144114Z_20120102.tif" > > # 1: convert the netcdf to vrt externally (works well) > os.system('gdal_translate -of "VRT" ' + netcdffile + ' ' + vrtfile) > > # 2: try to open the vrt in Python (fails at .ReadAsArray) dsin = > gdal.Open(vrtfile) > > if not dsin is None: > indata = dsin.ReadAsArray(0, 0, dsin.RasterXSize, dsin.RasterYSize) > > # 3: convert the same vrt to a tif externally (works well) > os.system('gdal_translate ' + vrtfile + ' ' + tiffile) > > > Regards, > Rutger > > > -- > View this message in context: > http://osgeo-org.1560.n6.nabble.com/Reading-a-NetCDF-file-with-python- > not-recognised-as-a-supported-dataset-name-tp4979943.html > Sent from the GDAL - Dev mailing list archive at Nabble.com. > _______________________________________________ > gdal-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/gdal-dev _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
