Hi, > I know that coordinate variables must have the same name than dimensions. I > also have some files with variables that defines the attribute 'coordinates' > in order to find the coordinate variables if the names do not comply the > first case. And in another file, the attributes 'positions' and > 'connections' are declared in order to find such coordinates. For these > files, there's no problem, all variables are found. However, for this one > file, there is no easy way to find such variables as they are not > recognized. > > What I don't understand is how Panoply can display the main variable with > the right coordinates whereas ncdump cannot even find them. I saw that > Panoply was using ncBrowse to read the netcdf file, but if I use it, the > variables are not found. Panoply uses the netCDF-Java API rather than the C API which ncdump uses. Still that doesn't explain why it should see variables ncdump can't, because the netCDF format is API-neutral. Can you make the file in question available to us, either as an email attachment or on a server, so that we can investigate further? Thanks! --Russ > > 2010/11/15 Unidata netCDF Support <address@hidden> > > > Hi, > > > > > When I run "ncdump -k ..." it returns "classic" format. And the netcdf > > > library that I uses is the 4.1.1 version. > > > > ncdump -h should show all the variables names shapes and types, but not the > > values > > of any variables. ncdump -c shows the information ncdump -h shows plus the > > values > > of coordinate variables, but it looks like your netCDF file has no > > coordinate variables. > > > > A netCDF coordinate variable has the same name as the corresponding netCDF > > dimension. > > > > --Russ > > > > > This is the dump that I obtain in Panoply if I select "Only plottable > > > variables" (or using ncdump) : > > > > > > dimensions: > > > TSTEP = UNLIMITED; // (1 currently) > > > LAY = 15; > > > ROW = 398; > > > COL = 478; > > > variables: > > > float O3(TSTEP, LAY, ROW, COL); > > > O3:long_name = "O3 "; > > > O3:units = "ppmV "; > > > O3:var_desc = "Variable O3 "; > > > > > > Otherwise, if I select "All variables", 4 other variables are displayed: > > > double x(COL=478); > > > :units = "km"; > > > :long_name = "synthesized coordinate from XORIG XCELL global > > > attributes"; > > > :_CoordinateAxisType = "GeoX"; > > > double y(ROW=398); > > > :units = "km"; > > > :long_name = "synthesized coordinate from YORIG YCELL global > > > attributes"; > > > :_CoordinateAxisType = "GeoY"; > > > double level(LAY=15); > > > :units = "sigma"; > > > :long_name = "synthesized coordinate from VGLVLS global attributes"; > > > :positive = "down"; > > > :_CoordinateAxisType = "GeoZ"; > > > int time(TSTEP=1); > > > :units = "seconds since 2010-10-27 00:00:00 UTC"; > > > :long_name = "synthesized time coordinate"; > > > :_CoordinateAxisType = "Time"; > > > > > > 2010/11/11 Unidata netCDF Support <address@hidden> > > > > > > > Hi, > > > > > > > > > When I use ncdump -h in order to display the header of my netcdf > > file, > > > > > there is only one variable displayed. However, if I use Panoply and > > > > > choose to display 'all variables', the missing ones are also > > displayed. > > > > > > > > > > Can someone explain why some variables are not displayed and > > recognized > > > > > using ncdump ? > > > > > > > > No, that's puzzling. Can you run "ncdump -k ..." on your netCDF file > > > > to see what kind of format ncdump thinks it is? If ncdump complains > > > > that the "-k" option is not valid, it's possible you are using an > > > > older version of ncdump that cannot access netCDF-4 files, but that > > > > you have a version of Panoply which understands netCDF-4 files. But > > > > in that case, it should not be able to display any variables. > > > > > > > > Can you make your netCDF file available to us via FTP or HTTP so we > > > > can try to replicate the problem here? > > > > > > > > --Russ > > > > > > > > Russ Rew UCAR Unidata Program > > > > address@hidden http://www.unidata.ucar.edu > > > > > > > > > > > > > > > > Ticket Details > > > > =================== > > > > Ticket ID: NFO-217382 > > > > Department: Support netCDF > > > > Priority: Normal > > > > Status: Closed > > > > > > > > > > > > > > > > > > Russ Rew UCAR Unidata Program > > address@hidden http://www.unidata.ucar.edu > > > > > > > > Ticket Details > > =================== > > Ticket ID: NFO-217382 > > Department: Support netCDF > > Priority: Normal > > Status: Closed > > > > > > Russ Rew UCAR Unidata Program address@hidden http://www.unidata.ucar.edu Ticket Details =================== Ticket ID: NFO-217382 Department: Support netCDF Priority: Normal Status: Closed
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