Re: [netcdfgroup] Using file:// protocol to retrieve opendap data...

• To: ed zaron <zaron@xxxxxxxxxxxx>
• Subject: Re: [netcdfgroup] Using file:// protocol to retrieve opendap data...
• From: Dennis Heimbigner <dmh@xxxxxxxxxxxxxxxx>
• Date: Tue, 11 Jan 2011 10:54:35 -0700

Ed-

The following commands ~do not~ open the file:

nigiri:Downloads ezaron$ ncdump -h ./ECMWF_ERA-40_subset.nc
ncdump: ./ECMWF_ERA-40_subset.nc: No such file or directory

nigiri:Downloads ezaron$ ncdump -h ./ECMWF_ERA-40_subset.nc.dods
ncdump: ./ECMWF_ERA-40_subset.nc.dods: NetCDF: Unknown file format

nigiri:Downloads ezaron$ ncdump -h file://./ECMWF_ERA-40_subset.nc <file:///./ECMWF_ERA-40_subset.nc> ncdump: file://./ECMWF_ERA-40_subset.nc: <file:///./ECMWF_ERA-40_subset.nc:> NetCDF: I/O failure

The rules are:
1. it must be in the form of a file:// url; in your first two cases,
   ncdump (or nccopy) will think it is a normal netcdf file.
2. the file:// path must be absolute, which is uour third case.
3. the file:// path must not end in .dods because ncdump will add that
   itself.

• References:
  • [netcdfgroup] Using file:// protocol to retrieve opendap data...
    • From: Dennis Heimbigner
  • Re: [netcdfgroup] Using file:// protocol to retrieve opendap data...
    • From: ed zaron