Problem with batch processing

I want to get all my images(which located in 1 file) processed. This is the code i used(attached,herewith).

 1st problem is once the 1st image is processed,how to make it to jump to the next image for processing.
 2nd problem is how to change the name of the saved figure at each cycle(eg:S3-Pic1, S3-Pic2, S3
-Pic3 ..etc). Appreciate your feedback.

Answer 1

[Image Analyst]

Both of these questions are explained well in the FAQ entry: http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F

[Chathu]

@ Image Analyst-thank you so much for your quick response.Really appreciate it. Everything works out well. Except saving the figure didn't work-pls see one before the last line as follows: hgsave(gcf,'Line detection\S3-Pic(k). How to save figures accordingly?

 clc
clear all
myFolder = 'E:\2. Cropped imgs\S3- crops';
if ~isdir(myFolder)
  errorMessage = sprintf('Error: The following folder does not exist:\n%s', myFolder);
  uiwait(warndlg(errorMessage));
  return;
end
filePattern = fullfile(myFolder, '*.jpg');
jpegFiles = dir(filePattern);
for k = 1:45
  baseFileName = jpegFiles(k).name;
  fullFileName = fullfile(myFolder, baseFileName);
  fprintf(1, 'Now reading %s\n', fullFileName);
  imageArray = imread(fullFileName);
  imshow(imageArray);  % Display image.
  [x,y]=ginput(4); line(x,y)
  hold on
  [x,y]=ginput(4); line(x,y)
  hold on
  [x,y]=ginput(4); line(x,y)
  hold on
  [x,y]=ginput(4); line(x,y)
  hgsave(gcf,'Line detection\S3-Pic(k)')
end

[Image Analyst]

Try export_fig() instead. See the File Exchange.