Matlab has a "dir" command that lists the content of a folder. It returns a struct with the names of the files, which you can process afterwards.

http://www.mathworks.it/it/help/matlab/ref/dir.html

Hi,

I am using for that this function:

% Function return the folder content filtered

% function [ n, datafiles ] = get_folder_content( directory, filepattern, filterout, fpattern)

%

% input:

% - directory

% - filepattern

% - filterout | 1 or 0

% - fpattern | not include files with this pattern

% fpattern is charracter array created by fpattern =

% char('string1', 'string2', ...,'stringn');

% or in case of one string fpattern = 'string';

%

% output:

% - n | number of files

% - datafiles | structure with datafiles

% datafiles(i).name -- sigle file name

% datafiles(i).fullname -- including full path

function [ n, datafiles ] = get_folder_content( directory, filepattern, filterout, fpattern)

%initialisation of the structure

datafiles(1).name = '';

datafiles(1).fullname = '';

if nargin

@simon:- thanx man. I have already used "dir" and "ls" instruction. that instruction list the file name in a variable. if I want to read the file, i have to use file name in a string.

since file name is stored in a variable, so i have to place that variable in a string. now can you tell me, how can we read a variable in a string?

simply rename the dir by placing @ sign before the name e.g. @nameofdir . In this way you can read every function file in the folder .

Also another approach is the follwing command

addpath('folderName1','folderName2','folderName3' ...)

Hi,

I will attach here two functions which I am using for loading images of different types.

Function which I have send to get directory content and another which is loading number of images .... get_directory_content.m load_images_n.m

Sorry ... It is called get_folder_content.m

next I will send you short manual ... give me some seconds ....

folder='/path/to/your/folder/'; %here use / in the end ... I know this is not nice proggraming but no time to fix it :)))))

filterout =0; % this is there if you want to filter out not wanted files .... 0 off, 1 on

%if you want to filter out from the folder content files with specific string you have to %specify pattern

pattern = 'test'; % everything containing 'test' string will be not listed

% if you want to filter out several patterns:

pattern = char('aa', 'bbb');

%specify file name ... first characters

prefix = 'myfile'

%now you are ready to read folder content

[n, files] = get_folder_content( [folder, prefix, filterout, pattern);

%now n is number of file names listed in structure files

% to access file names use this:

datafiles(1).name % this will give you just the file name of the first file in the list

datafiles(1).fullname %this will give you absolute file name ... so with absolute path

%so now you can do for loop from 1 to n and print filenames to check if everything is %ok

%and now you can load your images using function load_images_n which I send before .... I am not sure if I send all dependecies I will check ...

%for example ... you have binary unsigned short images of size 500 x 400 pixels and you want to load them. this will load them as double precision data for further calculations

[header,Images] = load_images_n( files, 'raw', 1, 10 , 500,400, 0,'uint16');

% where header is the header if there was in the file ... you just ignore it : - )

% Images - are the actual images in the form of 3D matrix I(x,y,n), x = 500, y=400 n = 10

% you can plot image like this :

% imshow(Images(:,:,5)); imcontrast

% this will plot 5th image

%files - is the list of files in the folder

% 'raw' - binary type of data ... there are several few supported .... you can add more and send be update if you like ...

% 1,10 - mean you want to load images from 1st to 10th

% 500,400 size of the image

% 0 header length in bytes I think

% 'uint16' - unsignet short representation

... hope this helped a bit

there is one format 'edf' which require external function which I did not send I guess you do not need it,

'mpx' - is the text file with image matrix

'tiff' - tif image .. gray scale

'raw' - binary file

if you need more help let me know

Of course one can find always better way how to do it! :)

Hi there,

Here is a script I always use to read large amount of text files of data into Matlab:

http://www.mathworks.co.uk/matlabcentral/fileexchange/40547-readtextfiles

Cheers,

Oznur

hi All maybe its to late to ask in this topic, but i found the exact problem as @Vinod Kumar ask before. i  already used "dir" and "ls" and store it into a variable. if I want to read the file, i have to use file name in a string and since i have store file name in variable, and i also have tried @Qazi Nasir suggestion to add '@' in front of variable that contain all name file but somehow it didn't work for my code.... so how can i read a variable in a string? in this case i try to read a text file (.txt). any suggestion ? thank you :)

Use imageSet() function in MATLAB.

coverImgSet = imageSet(folderpath);

numcoverfiles = coverImgSet.Count

You will need a loop to iterate through the image set

clear;

clc;

file = dir('F:\work\SCSVMV\*.jpg'); % Directory where images

NF = length(file); % Count of Images in the directory

images = cell(NF,1); % creating a variable to hold martix of images

for k = 1 : NF

% This can be used for RGB images also. In the image matrix, each

% row/column stores an Image which contain [R G B]

images{k} = imread(fullfile('F:\work\SCSVMV\', file(k).name));

end

you can use the following code:

images = dir('*.jpg') ; % GEt all images of the folder

N = length(images) ; % number o fimages

I = imread(images(1).name) ; % crop one to get rect

for i = 1:N

I = imread(images(i).name) ; % REad image

[filepath,name] = fileparts(images(i).name) ;

imwrite(Im,strcat(name,'img_','.jpg')) ; % Save image

end

you can use ls function

https://ch.mathworks.com/help/matlab/ref/ls.html

Use the following code for read whole data from folder

File =dir ('path of file\*.hdf')