Transcription of Chapter 16: Curve Fitting Curve Fitting - Origin
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Chapter 16: Curve Fitting Curve Fitting - Origin
Chapter 16: Curve Fitting Curve Fitting Before You Begin Selecting the Active Data Plot When performing linear or nonlinear Fitting when the graph window is active, you must make the desired data plot the active data plot. To make a data plot active, select the data plot from the data list at the bottom of the Data menu. The data list includes all the data plots in the active layer. The currently active data plot is checked. Selecting a Range of a Data Plot To select a range of a data plot for Fitting , click the Data Selector tool on the Tools toolbar. Data markers display at both ends of the active data plot. Additionally, the Data Display tool opens if it is not already open. To mark the data segment of interest, click and drag the markers with the mouse. You can also use the left and right arrow keys to select a marker.
Type the confidence level for calculating confidence and prediction limits in the Confidence text box. Select the Apparent Fit check box to use the apparent values for fitting, according to the current axis scales. This check box allows you, for example, to fit exponentially decaying data with a straight line fit by plotting the data on a log ...
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