how to create a directory?

how to create a directory where i have to store images and later read that folder and subplot all images in 1 figure window without overlapping

plz give replies..need help to finish project

Answer 1

[Walter Roberson]

%create a directory
tdir = tempname();
mkdir(tdir);

numimg = 10;
imagenames = cell(numimg, 1);
%store some images in there
for K = 1 : numimg
  randimg = randi([0 255], 32, 32, 3);
  imgnames{K} = fullfile( tdir, sprintf('image_%03d.png', K) );
  imwrite(randimg, imgnames{K});
end

pause(20);   %"later"

%read that folder
images = cell(numimg, 1);
for K = 1 : numimg
  imgname = imagenames{K};
  if ~exist(imgname, 'file')
    fprintf('somehow a file went missing: "%s"\n', imgname);
    images{K} = [];
  else
    images{K} = imread(imgname);
  end
end

%subplot all of them in one figure without overlapping

image4 = cat(4, images{:});
montage(image4);

Note:

If your only reason for reading them back in is to display them, then you can skip from "read that folder" onwards and instead use just

montage(imagenames);

[rikki kumar]

thank u for reply sir i tried this code..its working well with 1 image which i took ...but when i am taking images from the directory created its not working .....could u tell me what changes i have to make in that case this s directory i created

[Walter Roberson]

https://www.mathworks.com/matlabcentral/answers/393879-how-to-display-sub-images-which-is-stored-in-folder-without-overlapping#answer_314683

cd('image8');
dinfo = dir('*.png');
filenames = {dinfo.name};
montage(filenames);

Or perhaps you would prefer

cd('image8');
montage((1:64) + ".png")   %requires R2017a or later

or even

montage(reshape(1:64,8,8).' + ".png")

... Remember, we do not know what order the pictures are "supposed" to be in.