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iTool User's Guide: Working with Plots |
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Curve fitting is the process of finding various ways to fit a curve to a series of data points which best represents all points. More specifically, since data, such as plot data, is often given as values along a continuum, you may wish at times to give estimates at points between values. Curve fitting allows you to find intermediate estimates for these values.
Note For both 2D and 3D plots, the curve fitting operation is performed on the X versus Y plot dimensions. |
For example, to fit a curve to the damped sine plot we have already created:
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The Curve Fitting dialog contains the following fields:
You can use this dialog to determine what type of model would best fit your data by changing the Curve fitting model drop-down menu setting and the Initial parameters text boxes values.
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The new curve created by the curve fitting operation is added to the Data Manager.
IDL Online Help (March 01, 2006)