Matrix indexing within a loop

Hi there, I have a script which loads epoched eog data (one after another) and identifies the bad trials (horizontal amplitudes above 95mV or bellow -95 mV). What I am just trying to add there, is a code which will be continuosly write into 8*25matrix (8 experimental conditions and 25 trials for each), which trials are good and which are bad, so if it finds eg. in the 9th trial of the first experimental condition bad trial it will write "1", and if not "0". Hope it is clear enough and thank you for your help!

 for k = 1:8
     % Create a mat filename, and load it into a structure called matData.
        matFileName = sprintf('event_%d_chans35-38.mat', k);
  if exist(matFileName, 'file')
    matData = load(matFileName);
      else
    fprintf('File %s does not exist.\n', matFileName);
        end

 xf=diff(matData.dataArray(3:4,:,:),1);
 xf=squeeze(xf);
 EOG_threshold_min = -95; 
 EOG_threshold_max = 95; 
    % Identify trials behind the threshold
    max_hor_amplitudes = max(xf);   %get max amplitude for each individual trial
    min_hor_amplitudes = min(xf);   %get min amplitude for each individual trial

    bad_max = max_hor_amplitudes > EOG_threshold_max;
    bad_min = min_hor_amplitudes < EOG_threshold_min;

    bad_trials_max = find(bad_max); 
    bad_trials_min = find(bad_min); 
end

Answer 1

[Walter Roberson]

Change

    bad_trials_max = find(bad_max); 
    bad_trials_min = find(bad_min);

to

    bad_trials_max(k, :) = bad_max;
    bad_trials_min(k, :) = bad_min;

[Rene Sebena]

Thanks for answer, but it is not quite what I need, this will rewrite in each step within the loop the previous condition,..so at the end I just see the results from the last condition. I need output which will look like this:

 Wrong = (8,25);

   0 0 0 0 0 1 0 etc.....1st loop step = 1st condition

   0 0 0 0 0 0 1 etc.....2nd loop step = 2nd condition
 etc...

[Walter Roberson]

The indexing by k ensures that it updates the output matrix, not rewrites all of it.