I guess it's asking you to build a function. So you'd start by defining it on the function line, something like
function nextT = ComputeT(T, x_array, iterationNumber)
try
nextT = T; % Some kind of initialization
if iterationNumber == 1
% Code up left side of your flowchart.
else
% Code up right side of your flowchart.
end
catch ME
errorMessage = sprintf('Error in ComputeT().\nThe error reported by MATLAB is:\n\n%s', ME.message);
uiwait(msgbox(errorMessage));
end
return; % from ComputeT
It doesn't appear like the left or right side of your flow chart have any kind of iteration or looping so you shouldn't need a for or while loop. It looks like just straightforward step by step computation of variables with no looping. You should be able to do that yourself as it is very basic. Now it appears that there is some kind of iteration involved, but that just means that your main program that called ComputeT will have ComputeT in a for or while loop, but that main program (a test harness) was not part of your flowchart. The flowchart portion of the program just involves one single iteration number and it looks like that is an input to the process, as are the x array and "Allowable Change" parameter. I hope that gives you a good start.
