MATLAB: How to add a set of 500 datas to workspace and plot them

import wizardplotworkspace

I have never used matlab. I have a set of 500 .ascii extensioned files. I open them in current folder. I click one of them and while holding it, I carry it to the workspace window. (this bring import wizard screen-I click next) I right click on the yellow colored ascii data on the workplace and plot it. then I need to save each of these plotted image in jpeg fomat. this needs to be done for each 500 items, I guess I need a script for this. but I dont know how to do it. Can someone help me please ?

Best Answer

Start with the FAQ at
http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F
I strongly recommend using the dir solution to process the files returned.
Something like the following should be a rough starting point...
d=dir('*.ascii');  % the directory list of files--salt wildcard/extension to suit
for i=1:length(d)
  data=textread(d.name(i));      % read a file
  plot(data(:,1),data(:,2));     % plot 2nd column vs first
  [~,name]=fileparts(d.name(i)); % get the root name of the file
  print -djpeg name              % write to name[.jpg]
  close 1                        % close that figure
end
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