...fix a constant value in curve fitting
You can fix a parameter value to a constant by editing the code for a SigmaPlot equation:
- Open the Regression Wizard (F5) and open the Equation you want to edit. If the equation is a built-in Equation, you will have to use Add As... to make an editable copy.
- Comment out or remove the parameter you want to fix to a constant under the Parameters box, then add a new line to the Equation box, defining the constant value of the parameter. Click OK when finished.
- To verify the constant setting, click Next from the Regression wizard, then click Options... The constant you defined should now appear
under the Constants heading. In the future, you can use this dialog box to change the constant value.
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