maximum value in each column

Hi all, I have 28 text files. each text file has 11 columns. I have to skip first 3 lines of each text file then read them. 1-How can I find the maximum number of each column in each text files? 2-how can I find the most maximum number of each column in the previous question in 28 files?

Answer 1

[Bob Thompson]

There is a function for finding maximums, max(), which finds the maximum value of a specified region. All you need to do is index the function to see each column and then run a for loop.

for k = 1:size(filelist); % Run through each file
 for j = 1:size(filedata,2); % Run through each column of a given file
  datamaxes(k,j) = max(filedata(:,j)); % Find max of column and store data
 end
end
for j = 1:size(datamaxes,2); % Run through each column again for maximax value
 maximax(j) = max(datamaxes(:,j)); % Find max value of given column for all files
end