How to check a pattern in a string in matlab?

Question

I want to check if a specific pattern was in a string to do some action

[filename pathname]=uigetfile
fullpath=[pathname filename]

In my p

Answer 1

You can select a folder and then import only those pictures which match a pattern by using directly dir() and wildcard *:

dir('C:\Users\username\Desktop\folder\*_cam*.jpg')

Answer 2

For more complex searches you can use regular expressions, but in this simple case a string comparison is enough.

% Let the user choose only files that end in .jpg
[filename pathname]=uigetfile('*.jpg');
% Use fullfile to join file parts! It is OS independent. 
fullpath=fullfile(pathname, filename);

if length(filename) > 8 && strcmp(filename(end-8:end),'_cam1.jpg')
    stuff = imread(fullpath);
    ...
elseif length(filename) > 8 && strcmp(filename(end-8:end),'_cam2.jpg')
    stuff = imread(fullpath);
    ...
end

It is not the most glamorous code, but it should get the job done.