how to save errors

I have the following code:

for i=1:10
    
    output1=some_function1(input1,input2)
    output2=some_function2(output1,input1,input2,input3)
    output3=some_function2(output2)
    .
    .
    .
end

and I want to add try and catch to it, since each function takes look time to compute. and sometimes I get error which I want to deal with later on.

so how can I save the string error which I see on the screen without the try-catch, info on where the error happened?

for example, say that when i=5 it in line 111 of some_function2 I get an error.

I want to save some "failures" struct like the following:

failures(end+1).iter=5;
failures(end).str='some_function2 in line 111"';

how can I save the 'some_function2 in line 111"' str which I see on the command window?

Answer 1

[Jan]

failures = struct('iter', {}, 'str', {});
for i = 1:10
   try
     output1=some_function1(input1,input2)
     output2=some_function2(output1,input1,input2,input3)
     output3=some_function2(output2)
   catch ME
     failure(end + 1).iter = i;
     failure(end + 1).str  = getReport(ME);
end