Finding minimum and maximum in many txt samples.

I would like to find min and max in samples which I load from my directory to Matlab. I need to speed up it a little bit and try avoid eg. loops . Is there any easy way how to find min and max in many samples without using 'for' loop? How to read txt files no one by one in a loop but all at once?

Part of my code:

   list=dir('*.txt');

   for i=1:length(list)
   fid=fopen(list(i,1).name);
   text_1=cell2mat(textscan(fid,'%f %f'))';
   end
   fclose(fid);

[Matt Kindig]

One thing that might help is to move the fclose(fid) statement inside the for loop. As it stands now, you are only closing the last file after all *.txt files have been processed. This means that Matlab has to keep each of those file handles open during the loop, which takes up I/O resources.

In other words:

list=dir('*.txt');

for i=1:length(list)
   fid=fopen(list(i,1).name);
   text_1 = textscan(fid, '%f %f', 'CollectOutput', true));
   text_1 = text_1{1};  %this might be a bit faster as well
   fclose(fid);   
end

Does this help?

Answer 1

[Azzi Abdelmalek]

I do not think, there is a better way to do it without a for loop

[Azzi Abdelmalek]

[Jonasz commented]

Ok thank you.