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plotgnuplotexponential

Gnuplot: Undifined value during function evaluation


i need to fit some data with sum of exponantial functions, but this shows all the time. Any suggestions how to do the fit?this is what it says after trying to fit the data

This is my datafile


Solution

  • It just needed to guess the initial value of variables really close to the result of the fit.

    Thanks for your answer.