- Purpose
This app can test whether a user-specified value for a fit parameter is statistically acceptable.
- Installation
Download the file "Fit Parameter Test.opx", and then drag-and-drop onto the Origin workspace. An icon will appear in the Apps gallery window.
- Operation
Make a graph active or select a Y column in a worksheet, and then click the app icon to bring up the dialog.
Then you can select a fitting function, and specify a parameter value to test.
Dialog Settings:
- Input Data: Show the input data range name.
- Category: Select a fitting function category.
- Function: Select a fitting function.
- Parameters to Compare: Select a parameter of the specified fitting function, and provide a value for comparison.
- Method: Choose the method for the parameter comparison, methods include Akaike Information Criteria (AIC) and F-test.
- Additional Outputs: Whether to output addtional results, including fit parameters and fit statistics.
- Fit Control Button: Open the Fit Control Dialog, which shows the fitted curve preview and parameters, also allows setting fit control options.
- Parameters Tab in Fit Control Dailog: Show the fitting parameters
- Fit Control Tab in Fit Control Dialog: Set the fit control options, including maximum number of interations, fitting tolerance, and enable/specify linear constraints.