How to make script look for specific files for processing?

Hi all,

I was wondering if there was a way for my script to look for specific files to import (jpg files) so it can crop multiple images selected.

 %Insert file names (without extensions) for processing
for LFAfile={'0W_1pc','0W_2pc','0W_3pc','0NoC_1pc','0NoC_2pc','0NoC_3pc'};

    %Add the file extension and look for the file
    if(exist(strcat(LFAfile{1}, '.jpg'),'file'))
        LFA = imread(strcat(LFAfile{1}, '.jpg'));

        %Uncropped set to 0 means that the image must still be manually
        %cropped
        if(uncropped==0)
        %Image will appear in upper panel.
        %Manually crop by drawing a box around the test and control lines
        %Make sure the control line is in the left half of the crop window
        %and the test line is in the right half of the crop window
            subplot(3,1,1);
            LFAGray = imcrop(rgb2gray(LFA), [46.5 3.5 219 31]);        
            close all;

        else
            LFAGray = rgb2gray(LFA);    
        end

Answer 1

[dpb]

Sure, if you can develop the pattern, you can generalize it...

for LFAfile={'0W_1pc','0W_2pc','0W_3pc','0NoC_1pc','0NoC_2pc','0NoC_3pc'};
  if(exist(strcat(LFAfile{1}, '.jpg'),'file'))

It depends on whether there are other files of similar naming that are not wanted or not as to how much effort you need. If it's a subdirectory that's full of .jpg files that need be done, then the simplest is just

d=dir('*.jpg');
for i=1:length(d)
  LFA = imread(d(i).name);
  ...

which eliminates the need to test for existance, etc., because dir won't include it if it doesn't.

Now the next most restrictive case in your example of names is that they all begin w/ 'O', so add that to the wildcard string--

d=dir('O*.jpg');

Next would require making up the two cases of 'OW*' and 'ON*' or perhaps it's the pc at the end of the name that is unique; no way for us to know that. There's also the alternative of getting the full array of .jpg files and then excluding ones not wanted therefrom. As many alternatives as you can dream up, depending on what the actual rules are for who is/isn't to be in the process list.

[Bryant]

Thanks dpb,

I want to make this as user friendly as possible. So is there a way that I can make a dialog box appear to select certain files I want? can I just use...

uiopen('.jpg')

[dpb]

Of course you could, but uigetfile is probably more appropriate since it has multi-select capability (that otomh I don't think uiopen has). You can (and will :) ), of course, check the doc's for the details...

[Bryant]

Thanks for helping a noob out dpb! (: