how to find the value fmincon is trying

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xueqi
xueqi 2013-11-26
评论： Walter Roberson 2013-11-26
Hi fellows,
I am using fmincon to find the minimum of function f. Sometimes it gets a value of f is NaN , so fmincon fails to converge. Do you know how to find what value that fmincon is trying when it gets f as NaN?

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回答（1 个）

Walter Roberson
Walter Roberson 2013-11-26
At the command prompt give the command
dbstop if infnan
and run. When it stops you can examine the parameters passed in to your function.
  2 个评论
xueqi
xueqi 2013-11-26
Hey. Could you also tell me how to examine the parameters? I am not sure where to find them....
Walter Roberson
Walter Roberson 2013-11-26
Look at
whos
and look at the parameter names you gave when you wrote the function and ask to look at those parameters. "x" is pretty common for this purpose.

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