Unable to open file with h5info, h5read

Hi everyone,

I try to open a .he5 file by using

>> filename='MLS-Aura_L2GP-IWC_v03-30-c01_2004d336.he5';

>> fileinfo=h5info(filename)

It returns:

Error using h5infoc

The HDF5 library encountered an error and produced the following stack
trace information:

      H5F_locate_signature    unable to find a valid file signature
      H5F_super_read          unable to find file signature
      H5F_open                unable to read superblock
      H5Fopen                 unable to open file

Error in h5info (line 75);

hinfo = h5infoc(filename,location);

Then I try with "hdf5info"

>> fileinfo=hdf5info(filename)

It gives:

Error using hdf5infoc
Call to HDF5 library failed (invalidFile): "Not a valid HDF5 file:
I:\DOCTORAT\TRAITEMENT\DONNEES\Dec2004v3\MLS-Aura_L2GP-IWC_v03-30-c01_2004d336.he5".

Error in hdf5info (line 79)
[info.Offset, info.GroupHierarchy, majnum, minnum, relnum] = ...

Do you know where is the problem?

Note that I try with an another file, a previous version of data and this command works.

Thank a lot for help

[Qing]

Hi ,friend!Have you ever solve this problem successfully? I just came up with a similar one.

[Walter Roberson]

Please show the first 80 or so bytes of the file, following the response I gave below.

[per isakson]

I have found the program HDF5View very useful when working with HDF5-files. See HDFView is a visual tool for browsing and editing HDF4 and HDF5 files.

If HDFView fails to open your file, your file is most likely not a correct HDF-file.

Answer 1

[Walter Roberson]

The file is not in HDF5 file format (or HDF4 format either.)

To help debug it, try

fid = fopen('testdcm.fig');
dat = fread(fid,[1, 80], 'uint8');
fclose(fid)

and show us the output of

dat
sprintf('%02x ', dat)
char(dat)

[T Ram]

Thank you for answer

It gives: >> fid = fopen('testdcm.fig');

>> dat = fread(fid,[1, 80], 'uint8');

Error using fread

Invalid file identifier. Use fopen to generate a valid file identifier.

[Walter Roberson]

Sorry, change the fid = fopen('testdcm.fig'); line to

fid = fopen(filename);