Re: using strings as arguments to load and save

[Claudio Belotti]

Nuno,
take a look here:
http://wiki.octave.org/wiki.pl?FileIO

ciao
Claudio


Nuno Nunes wrote:
> Hi,
> 
> I'm trying to use the load and save commands with a string variable as
> the name of the file to work on. I'm very puzzled as to why it works in
> one case, but not in others (that would be more useful to me).
> 
> If I write the filename explicitly, the command works as expected, i.e.
> loads the variable DAY from HDF5 file nov03.h5m2:
> octave:14> load -hdf5 nov03.h5m2 DAY
> 
> Using a string variable as filename, I get an error:
> octave:17> file = "nov03.h5m2"
> octave:18> load file
> error: load: nonexistent file: `file'
> 
> After some experimentation I found that
> 
>>load (file)
> 
> works (i.e. the variable file expands to nov03.h5m2), except it loads
> all variables (which I want to avoid with 7 GB files...) If I specify
> the variable, I get a syntax error:
> octave:18> load (file) DAY
> parse error:
> 
>   syntax error
> 
> 
>>>>load (file) DAY
> 
>                   ^
> octave:18> load -hdf5 (file) DAY
> error: load: nonexistent file: `(file)'
> 
> I couldn't find any documentation of this behaviour, and now I ran out
> of ideas to try to get the variable string to expand to its value. Has
> anyone managed to do this? How is it done? Am I doing anything wrong?
> Any help will be greatly appreciated.
> 
> Thanks,
> Nuno




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