Re: Compile load-hdf.cc function

[Christophe Bonenfant]

Hi Mike,

Thank you very much for you swift answer. I know projects such as Octave 
needs help and contribution from the community but unfortunately, I am 
just an end user and coding such functions is way off my skills.

So far I have been quite unsuccessful to handle hdf files (I could open 
it in QGIS though). I am still looking for solutions to this problem, 
and here I am. I could compile the load_hdf.cc by commenting #include 
octave/ov-list.h and using sources from hdf. I am now left with a 
load_hdf.oct file that do not want to load either:

octave:1> autoload(load_hdf.oct)
error: /.../load_hdf.oct: failed to load: /.../load_hdf.oct: undefined 
symbol: read_hdf_sd
octave:1>

I guess there are kind of dependencies. I am trying to get in touch with 
people from CISM in case they can propose a workaround. I'll let you know.

Chris

On 03/01/2014 23:27, Mike Miller wrote:
> On Fri, Jan 3, 2014 at 10:01:39 -0800, Krikouille wrote:
> > I am running Octave version 3.6.4 with Debian (Debian 3.10.11-1 (2013-09-10)
> > x86_64 GNU/Linux). Now, I am trying to run a Matlab script where HDF
> > meteorological files are used. I am aware of Octave function ( 'load -hdf5'
> > <http://octave.1599824.n4.nabble.com/How-to-read-HDF-data-td3298990.html>  )
> > that should read such files, however, it does not work properly in my case.
> > I get the following errors (I attached the file 05.02.hdf to this mail:
> > 05.02.hdf <http://octave.1599824.n4.nabble.com/file/n4660623/05.02.hdf>  ):
> >
> > [...]
>
> Hi Chris, this is probably to be expected, my understanding is that
> the intent of "load -hdf5" is to support files that were created by
> Matlab's save command (with the -v7.3 option), not any arbitrary HDF
> file.
>
> > Looking for a solution, I came across an Octave 'portage' of the Matlab
> > hdf_load function  here
> > <http://lasp.colorado.edu/cism/CISM_DX/code/CISM_DX-0.50/required_packages-linux/tsds/deps/octave-rsw/octave-matlab-compat/octave/hdfread/octave/>
> > . The two functions hdfinfo.m & hdfread.m cannot work unless I compile
> > load_hdf.cc to get a load_hdf.o file. My attempt to compile load_hdf.cc in
> > Octave actually fails too:
> > octave:2> mkoctfile load_hdf.cc
> >
> > load_hdf.cc:14:28: fatal error: :  No such file or directory
> > #include <octave/ov-list.h>
> >
> > I understand that octave/ov-list.h should come with headers but even after I
> > installed liboctave-dev, I end up with the same error. I cannot find any
> > ov-list.h file on my system using locate ov-list.h, neither can I find
> > mention of this files in Octave 3.6 from Debian packages.
>
> I have not looked at this site or the code yet. However, that header
> file is ancient (removed before the 3.4.0 release 3 years ago),
> leading me to believe that this code that you found is unmaintained.
> You could try to adapt it to 3.6.4 you are working with or see if
> anyone else has already done so.
>
> > Any help on how to sort this problem out? Would be great because I have tons
> > of hdf files to process...
>
> The best solution for everyone would be to implement the h5* set of
> functions as part of Octave itself. Do you have time or skills to help
> with that? Or funds to finance a developer to implement them for you?
>
> At the very least you can submit a feature request to the bug tracker
>
>    https://savannah.gnu.org/bugs/?func=additem&group=octave
>
> HTH,

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