HDF error (NC_EHDFERR) big NetCDF

Hello everybody

I have tried to extract the varid_ta variable from a big NetCDF file (ncid_ta), with size x-y-time : 796x1115x34757 (114.9GB).

Matlab does not allow me to open it all at once, as it exceeds array size limit, so I have tried to extract each time step separately using the command:

netcdf.getVar(ncid_ta,varid_ta,[0, 0, 0], [796 1115 1], 'double')

When I have applied the command to smaller NetCDF everything have worked well, but with this one it gives me the error message:

The NetCDF library encountered an error during execution of 'getVarsFloat' function - 'HDF error

(NC_EHDFERR)'.

Error in netcdf.getVar (line 140)

data = netcdflib(funcstr,ncid,varid,varargin{:});

Error in internal.matlab.imagesci.nc/read (line 635)

data = netcdf.getVar(gid, varid, ...

Can this be a consequence of an out of memory problem or I should look somewhere else?

[Luis Erasmo Miranda]

when using an online mounted drive (opendap, or samba)

For all our friends who have this and similar errors like:

Error using netcdflib

The NetCDF library encountered an error during execution of 'inqFormat' function - 'Not a valid ID (NC_EBADID)'.

try 2 things:

considering J: as the mounted drive in windows

1. Use double forward dash like 'j://folder\to\nc\file.nc' , This tricks the code to treat the file as a online one (opendap)
2. If this doesn't solve the problem, fix the max file size limit to tranfer from a web folder, with https://support.microsoft.com/en-us/help/900900/folder-copy-error-message-when-downloading-a-file-that-is-larger-than in short: change HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebClient\Parameters\FileSizeLimitInBytes to ffffffff (4294967295 bytes 4Gb in decimal)

Reboot and try again

good luck