adding multiple images together from a for loop

I am trying to adding multiple images together into one in a for loop, but seem to only display the last image. This is what I've tried. Someone please assist me.

 E = [];
 for i = 1:4
     str = int2str(i);
     str = strcat('\',str,'.jpg');
     str = strcat('C:\Users\ASUSA55V\Documents\MATLAB\images\ur3', str);
     im = imread(str);
     im = imresize(im,[64 70]);
     E = im;
     E = E+E(i);
     end
imshow(E);

Thanks

Answer 1

[David Sanchez]

Try this out:

 E = [];
 for i = 1:4
     str = int2str(i);
     str = strcat('\',str,'.jpg');
     str = strcat('C:\Users\ASUSA55V\Documents\MATLAB\images\ur3', str);
     im = imread(str);
     im = imresize(im,[64 70]);

     E = E + im;
 end
imshow(E);

[David Sanchez]

why did you add that line? With it, you are overwriting previous data and saving only the last image.

[Jack Sparrow]

Thank you david, but I'm gettin this error:

 Error using  + 
 Matrix dimensions must agree.
 Error in Untitled2 (line 12)
         E = E + im;

but, when I tried to change the code to

 E = [];
 for i = 1:4
     str = int2str(i);
     str = strcat('\',str,'.jpg');
     str = strcat('C:\Users\ASUSA55V\Documents\MATLAB\images\ur3', str);
     im = imread(str);
     im = imresize(im,[64 70]);
     E = im;          %%%%I added this to the code
     E = E + im;
 end
imshow(E);

It seem to be showing only the last image. I want it to include information from all the combined images.

[David Sanchez]

By the way, what do you want to do? When adding images like that, you will not save the information of the images, you'll add them up and you will end with a very white image.