I am trying to fit a curve to experimental data by use of "optimtool" and "fminsearch".
But I receive a warning which says " Imaginary parts of complex X and/or Y arguments ignored". I have this warning from the first iteration.
Any idea to solve this warning is appreciated. Thanks in advance Best regards Victor
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Turn on FunValCheck to produce an error when imaginary values are encountered.
If your fitting inherently involves imaginary quantities, then please note:
fminsearch only minimizes over the real numbers, that is, x must only consist of real numbers and f(x) must only return real numbers. When x has complex variables, they must be split into real and imaginary parts.