Error reading .nc4 file: 'Unknown file format (NC_ENOTNC)'
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Hi there,
Am trying to read a .nc4 file using ncread('filename') and get:
>> ncread('S3A_OL_SRF_20160713_mean_rsr.nc4')
Error using netcdflib
The NetCDF library encountered an error during execution of 'open' function -
'Unknown file format (NC_ENOTNC)'.
Error in netcdf.open (line 60)
[varargout{:}] = netcdflib ( 'open', filename, varargin{1} );
Error in internal.matlab.imagesci.nc/openToRead (line 1249)
this.ncRootid = netcdf.open(this.Filename,'NOWRITE');
Error in internal.matlab.imagesci.nc (line 122)
this.openToRead();
Error in ncread (line 54)
ncObj = internal.matlab.imagesci.nc(ncFile);
Any suggestion will be kindly appreciated
Thanks,
Juancho
Respuestas (3)
Tamir Suliman
el 25 de Nov. de 2016
2 votos
It might be corrupted file or over written try to re copy it again that's the message one gets if the file is not there with the netCDF functions.
2 comentarios
juan ignacio gossn
el 27 de Nov. de 2016
Rimal Abeed
el 7 de En. de 2020
His suggestion fixed my problem!
Walter Roberson
el 25 de Nov. de 2016
Check the first few bytes of the file. If they are 'CDF' then it might be a valid netCDF file but it would not be a NetCDF-4 file. NetCDF-4 files are HDF5 files. If it is NetCDF-4 stored as HDF5, then the file should begin with
Hex: 89 48 44 46 0d 0a 1a 0a
ASCII: \211 HDF \r \n \032 \n
2 comentarios
juan ignacio gossn
el 27 de Nov. de 2016
Editada: Walter Roberson
el 27 de Nov. de 2016
Walter Roberson
el 27 de Nov. de 2016
It appears that is related to JSON and to Facebook's OpenGraph protocol.
Possibly there is NetCDF-4 represented in the content, but the data structure itself is not NetCDF-4
juan ignacio gossn
el 21 de Dic. de 2016
0 votos
Categorías
Más información sobre NetCDF Files en Centro de ayuda y File Exchange.
el 25 de Nov. de 2016
el 7 de En. de 2020
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