determing file size

I have images in two folders,in e drive,one folder consists of normal images ,and other compressed images

image(foldername)consists of original images

image1(foldername)consists of compressed folder

i want to calculate the size of each folder and compression ratio,please help

Answer 1

[Jonathan Sullivan]

im1_stats = dir(filename_image1);
im2_stats = dir(filename_image2);
ratio = im1_stats.bytes./im2_stats.bytes

[kash]

Jonathan in filename_image1 is it

im1_stats = dir(e:\image);

in my case

i get

4x1 struct array with fields:

name

date

bytes

isdir

datenum

i have 10 images

[Jonathan Sullivan]

kash, You want the file name, not the directory. So for example, let's say that the image your compressed is called image_uncompressed.jpg, and the compressed image is called image_compressed.jpg. Your code should then read:

filename_image1 = 'e:\image\image_uncompressed.jpg';

filename_image2 = 'e:\image\image_compressed.jpg';

im1_stats = dir(filename_image1);

im2_stats = dir(filename_image2);

ratio = im1_stats.bytes./im2_stats.bytes

[kash]

Jonathan i have 15images in that folder

[Jonathan Sullivan]

Oh. I understand now. Try this

folder1_stats = dir(folder1); 
folder2_stats = dir(folder2);
size_folder1 = sum([folder1_stats.bytes]);
size_folder2 = sum([folder2_stats.bytes]);
ratio = size_folder1./size_folder2 

[kash]

Thanks Jonathan

[Abdesselam Bassou]

txk a lot