MATLAB: How to save to mat file

save to mat files

Hi All,

I am having some problem now and need to solve it urgently. Please help.

imep=W4/(pi*b^2/4*s);
eta=W4/mass1*(1+phi*0.06548*(1-f))/phi/0.06548/(1-f)/47870/1e3;
timefinish=cputime;
timetaken=timefinish-timestart;
% save all data
save ahrind.mat
clear

I am having some error.

*Error using save Unable to write file ahrind.mat: permission denied.

Error in ahrind (line 80) save ahrind.mat *

Can I know how can I save the file to mat format.

Thanks.

Best Answer

Looks like you're trying to save a file to either, an open file (try "fclose all"), or a file location that you do not have permission to write to.

If someone else has the file open, "fclose all" will do nothing. If you don't have write access, you need to talk to your admin. - But you should be able to save it somewhere only you can see, like:

save 'D:\my document folder\matlab stuff\test.mat'

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MATLAB: Error in downloading sequence of txt files

Katerina - are you running the code from the directory where those files are located, or some other directory? Is the directory that contains the files in your MATLAB search path?

If a file is in a directory/folder that is in the MATLAB search path, then you will be able to open (or load) that file by simply providing the file name, as you are doing with

 ALL=load(filename)

But if the directory/folder for this file is not in the MATLAB search path, then the code will not be able to find that file and you will see the

 Error using load
 Unable to read file 'AbR1997.txt': no such file or directory.

You can do a couple of things - either add the directory (that contains these files) to the MATLAB search path, or better, just specify where the file is located. If we assume that your directory is N:/My Documents/MATLAB/runfiles, then build the folder name as

 foldername  = fullfile('N:', 'My Documents', 'MATLAB','runfiles');

and use this when we build the file name

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Try the above and see what happens!

Best Answer

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MATLAB: Save a file inside a subfolder of a folder

MATLAB: Error in downloading sequence of txt files

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