How to make HDF5 files with Matlab

[toderascurobert@yahoo.com]

Hi Mohid users,

I have made my own script to make HDF5 files for temperature and salinity in Matlab and the resulting file is identical with the example file, but:

1. The simulation does not work giving me this error:

GetHDF5GroupNumberOfItems - ModuleHDF5 - ERR03

2. When I load the file in GIS I can see only the Grid, Results and Time groups but they are empty for GIS.

Probably 1 and 2 are related, but I can't imagine the problem since the files are identical and the example file works for both (1 and 2) and mine doesn't.

There is a special command that has to be included in HDF5 file, or a special field, something like this?

P.S. The simulation works fine if I don't include the water properties and is not the problem with the empty space in folder names, since there is none.

Cheers,

Robert Toderascu.

[leonardo-karv@hotmail.com]

Hi Robert, this occurs 'cause the hdf5 library version used on your matlab to write the hdf files. The MOHID accept only the version (I'm not sure) 1.6.8 or lower.
The version 1.6.8 is used on matlab 2008 or lower.

Then, the solutions are:
-Run your matlab script in a matlab 2008 or lower, or
-Download the newest hdf5 library version, install it on your computer and compile your MOHID to generate a new executable.

P.S.:You don't need to attach hdf5 attributes to your hierarchies and the names of the hierarchies should be the same as MOHID write.

Best regards,

Leonardo Carvalho

[toderascurobert@yahoo.com]

Thank you, Leonardo.

Actually that happened because I didn't use a GZIP level 6 archiving method. I've downloaded repack.exe (1.6.8 version) from hdf5 utilities and now they load into GIS and all.
Still your intuition could not me more correct since now I am getting the following error:

HDF5-DIAG: Error detected in HDF5 library version: 1.6.4 thread 0. Back trace f
ollows.
#000: \hdf5-product\hdf5-164release\hdf5\src\H5G.c line 297 in H5Gopen(): grou
p not found
major(10): Symbol table layer
minor(48): Object not found

and I suspect is because of the hdf5 libraries. I will try the methods suggested by you and repost about how I fixed it (not sure how to compile it yet, but I will read the mohidwiki instructions).

Best regards,
Robert Toderascu

[leonardo-karv@hotmail.com]

OK, but I think the best way is to re-run your matlab code in a matlab 2008.

I never tried to install the newest hdf5 library or compile the MOHID to generate a new executable,
but I think it is a quite difficult to do, and you will need the Intel Visual Fortran 2008 to compile the
MOHID.

Best regards,

Leonardo Carvalho

[toderascurobert@yahoo.com]

I fixed it by recompiling the Mohid executable to accept the new libraries.

[erodriguezrubio@yahoo.com.ar]

HI MOHID users

I would like to know if any body you can give me a copy of matlab code to convert my files (ascii or netcdf) to HDF5 files

Best regards

Efrain