MATLAB: How to automatically continue running the program after an error.

automationerrorgmmloopsMATLABStatistics and Machine Learning Toolbox

The problem I'm having is currently with the GMM fit model. but it's rather general. during the run of my program GMM sometimes gives the error of ill conditioned matrix and breaks the code. Now my code is in a long loop with a counter. what I'm doing right now is to manually reset the loop counter in the code body to the last working number, so that the code restarts from the point where it stoped. But it's tedious. Is there a way to tell matlab to do a few basic operations in case of an error and try again, instead of breaking off with an error?

Best Answer

Use a try catch to catch the error and respond appropriately to it:
counter = 1;
while counter <= num_loop %if you want to retry the loop, you need to change it into a while loop
  %... some code
  try
    %some operation that may terminate
  catch err
    if strcmp(err.identifier, 'whatever identifier is thrown by GMM')
      counter = counter - 1; %retry loop
    else
      rethrow(err); %some other unexpected error. Better stop
    end
  end
  counter = counter + 1;
end
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