MATLAB: How can a function find location of itself

folderfunctionlocation

I want to save a file in the same location as the a function (ie not in the current folder). How can a function find get the location of itself?

(the file should handle being moved around, additionally, it will always be in some PATH)

together with fileparts() to extract the directory portion, and fullfile() to construct the new file name.

dir is a function that takes a look in a determined folder (and subfolder if you command).

cd without arguments is your actual location

dir(cd) would bring you all the files in your actual location.

files = dir(cd);

Will return a struct with name of the file, folder,a boolean value about if it is a folder or not, and its modification date.

Hope it helps!

You need to cast ‘w’ as double before you do the calculations. You can recast it as whatever it was previously to save it later.

The easiest way might be:

w=imread('win.png');%its a 32X32 picture

wrr = double(w);
for i=1:32
    for j=1:32
    wrr(i,j)=wrr(i,j)*.02;
    end
end
disp('wrr');
disp(wrr);

That preserves the original ‘w’ if you want to do that.

However the easiest way to do what you want is simply:

w=imread('win.png');%its a 32X32 picture
wrr = double(w) * 0.02;