Question

I am trying to write an image that I do operations on to a ‘.tif’ file in a directory. I make the results directory with Matlab using the mkdir() function.

Here is the command I am using:

[pathstr, nameWOext, ext] = fileparts(filename);
results_dir = ['results' '/results_' nameWOext];

%check to see if the directory exists already, if it doesn't make it
if(exist(results_dir) ~= 7)
    mkdir(results_dir);
end

filenamezero = [nameWOext '_J' ext];

imwrite (~J, fullfile(results_dir, filenamezero));  //Error here

When Matlab gets to this line it outputs an error:

Could not open file for writing. Check directory or file permissions.

I inspected the folder ‘results/results_’ and the folder is read-only. Apparently mkdir() is doing this automatically.

Is there anyway to get around this?

Thanks

P.S. I am running Windows 7 using Matlab 6.1

Answer 1

I think your problem may be your use of the fullfile function. I think the result is that the path you are trying to pass to imwrite has a mix of \ and / for file separators.

Try using this instead:

filenamezero = [nameWOext '_J' ext];
imwrite (~J, [results_dir '/' filenamezero]);