Reading many files in one loop

How can I read file names and convert them to a matrix? I have more than one file and I want to read their contents in one loop of the program. Thanks

[Tobias]

What is your current code? I assume you must have tried something yourself. Which errors are you getting?

[Jan]

It is not useful to convert filenames to a matrix. Do you want to import the file's contents into a matrix?

[John]

no I need to read the contents of a specific folder's file names (as text), then run selection rule to pick names only that i want.

The problem is that files being send to a folder, with names of the format (yyyymmddhh.jpg) so each day there is a marked file as (yymmddT.jpg)... (T for terminate). The names are varying, i can't read all by fopen commands, i can't specify the required name unless they are in some form.

Answer 1

[Ahmed A. Selman]

Download a function file called folderFiles.m.

http://www.mathworks.com/matlabcentral/fileexchange/40877-folderfiles-m

It'll do the job for you, hopefully.

Answer 2

[ChristianW]

doc dir

D = dir([myfolder 'my*file*name*.*']);
files = {D.name}';

[John]

how to use files? I used it like

 D = dir(['C:\Documents and Settings\John\My Documents\MATLAB\Pic_Down'  '*.jpg'])

 files = {D.name}';

 files = 

     {}

any ideas?

[Jan]

This means, that no file matchs the filter:

'C:\Documents and Settings\John\My Documents\MATLAB\Pic_Down*.jpg'

Perhaps you want:

'C:\Documents and Settings\John\My Documents\MATLAB\Pic_Down\*.jpg'

Note: fullfile() is much better for constructing file names than STRCAT, HORZCAT or [.].

Answer 3

[Jan]

See: http://www.mathworks.com/matlabcentral/answers/57446-faq-how-can-i-process-a-sequence-of-files

It is always a good idea to read the FAQ, because it is efficient to profit from the errors of others.