Prohibit "pcg" writing to command window
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Hello,
I got a more cosmetic question concerning matlab function "pcg" https://de.mathworks.com/help/matlab/ref/pcg.html. Is there a way to prevent a command line output from pcg after each (un)successful call? It is annoying and might even slow my program down due to the writing to the command window. Thanks in advance, Daniel
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Geoff Hayes
2018년 7월 5일
Daniel - Wow that is busy. Perhaps try doing
[x,~,~,iter] = pcg(Id-(tspan(i+1)-tspan(i))*A, U(:,i));
U(:,i+1) = x;
I noticed that if I just did
[x] = pcg(Id-(tspan(i+1)-tspan(i))*A, U(:,i));
then I would observe the pcg converged at ... message. But with the other line of code where I have an iteration output parameter, iter, then the message is suppressed.
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Josh Meyer
2019년 9월 23일
To clarify for future readers: if you specify the second FLAG output then the function stops printing convergence information to the command window. Instead the value of the FLAG output conveys whether the attempt was successful.
[x,flag] = pcg(...)
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