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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:
Filter
Curve Fitting.
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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)