3.33 FAQ-262 How do I supply my own Equation and Sample Curve images for my fitting function?

Last Update: 2/4/2015

When using the NLFit tool or the Fitting Function Organizer tool, you can see the sample curve and the equation of the built-in function in the lower pane of the tool. These images are very informative for that they can tell us the general shapes of the fitting curves. To supply your own equation and sample curve images for your fitting function, you can simply put an .wmf file (for the Equation) and .cuv file (for the Sample Curve) with the same name as the .fdf file(the definition file of your own fitting function) under <UFF>\FitFunc folder, where <uff> refers to your user files folder.

To create a .wmf (Equation) file, you can use Equation Editor in Microsoft Office Word to write down the function expression, copy and paste it into an Origin Layout page. And then export it as a .wmf file. Or you can use the MathType tool to write the function expression and save it as a .wmf file.

To create a .cuv (Sample Curve) file, you can create a typical sample curve in Origin and then export it as a .wmf file and rename it as a .cuv file.

Keywords:Fitting, NLFit, Fitting Function Organizer, Sample Curve