MATLAB Central Newsreader - Saving

Saving

Francesco — Wed, 23 Apr 2008 15:45:05 -0400

I tried to save my output files on
the external hard drive using

save ('E:\filename')

and actually my file is saved on the E: directory,
the only problem now being that in E: it is not
stored as .mat file, but "Link to Microsoft Access Office".
I don't know what to do, could you pls give me advice?

Here is the step of my code where this problem occurs:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

for l=1:N

filename = num2str(l,'data_%d.mat');

save ('E:\filename')

end

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

I would like to end up on the E: directory with a set of
files:

data_1.mat
data_2.mat
.
.
.
data_N.mat

Many thanks,
Francesco

Re: Saving

David — Wed, 23 Apr 2008 16:02:45 -0400

"Francesco " <fsarnari@maths.leeds.ac.uk> wrote in message
<funli1$56o$1@fred.mathworks.com>...
> I tried to save my output files on
> the external hard drive using
>
> save ('E:\filename')
>
> and actually my file is saved on the E: directory,
> the only problem now being that in E: it is not
> stored as .mat file, but "Link to Microsoft Access
Office".
> I don't know what to do, could you pls give me advice?
>
> Here is the step of my code where this problem occurs:
>
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>
> for l=1:N
>
> filename = num2str(l,'data_%d.mat');
>
> save ('E:\filename')
>
> end

the save should be:

save(['E:\' filename]);

or you could do:

filename = num2str(l,'E:\data_%d.mat');
save (filename)

you are not substituting the variable 'filename' you are
saving to the file named 'filename'.

Re: Saving

Steven Lord — Wed, 23 Apr 2008 16:52:56 -0400

"Francesco " <fsarnari@maths.leeds.ac.uk> wrote in message
news:funli1$56o$1@fred.mathworks.com...
>I tried to save my output files on
> the external hard drive using
>
> save ('E:\filename')
>
> and actually my file is saved on the E: directory,
> the only problem now being that in E: it is not
> stored as .mat file, but "Link to Microsoft Access Office".
> I don't know what to do, could you pls give me advice?

You likely installed or updated Microsoft Office since the last time you
associated the .MAT extension with MATLAB. My understanding is that
Microsoft Office automatically assumes that it should associate the .MAT
extension as a Microsoft Access Table shortcut. If you want to make sure
the file was saved correctly as a MAT-file that MATLAB can read, you can
check this by loading in the file using LOAD.

> Here is the step of my code where this problem occurs:
>
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>
> for l=1:N
>
> filename = num2str(l,'data_%d.mat');
>
> save ('E:\filename')

This isn't going to do what you want. It's going to save all your files as
a file named filename on your E drive, each one but the first overwriting
the previous. You want to use FULLFILE:

for k = 1:N
filename = num2str(k,'data_%d.mat');
save(fullfile('E:', filename))
end

[As a personal preference, I try to avoid using i, j, or lower case L as
loop indices. The former are too useful as sqrt(-1); the latter is too easy
to confuse with the number 1.]

--
Steve Lord
slord@mathworks.com