![]() Note that this function is sensitive to xc and t1, different initial values could generate different results. Select the piecewise function we defined and initialize the parameter values:Ĭlick Fit button to generate the results: For example, let’s define a simple piecewise function. You can also set the value which will be true when no condition is true. Press Ctrl + Y to bring up NLFit dialog with the graph window active. To define a piecewise function, you have to put the condition and its value inside the piecewise () function and then the second condition and its value, and so on. Dependent Variable(s): double & y ) Fit the Curve Void _nlsfpiecewise ( // Fit Parameter(s): double xc, double a, double b, double t1, Press F9 to open the Fitting Function Organizer and define a function like:Ĭlick the button on the right of the Function edit box and define the fitting function in Code Builder using: The addition of the selector piecewise indicates to simplify that it should. ![]() You can fit this curve using built-in functions under Growth/Sigmoidal category, however, in this tutorial, we will separate the curve into two parts by a piecewise function. The piecewise function allows for common manipulations, such as simplifications. Highlight column D and plot a Scatter Graph. We can start this tutorial by importing the sample \ Samples\ Curve Fitting\ Exponential Decay. Connect and share knowledge within a single location that is structured and easy to search.
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