The Model Library can assist you in creating the formula column with parameters and initial values. Click the Model Library button on the Nonlinear launch window to open the library. Select a model in the list to see its formula in the Formula box (Nonlinear Model Library Dialog).
Nonlinear Model Library Dialog
Click Show Graph to show a 2-D theoretical curve for one-parameter models and a 3-D surface plot for two-parameter models. No graph is available for models with more than two explanatory (X) variables. On the graph window, change the default initial values of parameters using the slider, or clicking and typing values in directly. See Example Graph in Model Library.
Example Graph in Model Library
The Reset button sets the initial values of parameters back to their default values.
Click Show Points to overlay the actual data points to the plot. The dialog in Select Roles opens, asking you to assign columns into X and Y roles, and an optional Group role. The Group role allows for fitting the model to every level of a categorical variable. If you specify a Group role here, also specify the Group column on the platform launch window.
Select Roles
Show Points
Clicking Make Formula at this point (after using Show Points) creates a new data table column named after the model that you chose from the Model Library. This column has the formula as a function of the latest parameter starting values.
Note: If you click Make Formula before using the Show Graph or Show Points buttons, you are asked to provide the X and Y roles, and an optional Group role. See Select Roles. After that, you are brought back to the plot so you have the opportunity to adjust the parameters starting values if desired. At that point click Make Formula again to create the new column.
The Model Library is created by a built-in script named NonlinLib.jsl, located in the Resources/Builtins folder in the folder that contains JMP (Windows) or in the Application Package (Macintosh). You can customize the nonlinear library script by modifying this script.
To add a model, you must add three lines to the list named Listofmodellist#. These three lines are actually a list themselves, which consists of the following three parts.
The values of lowx, highx, lowy, and highy specify the initial window for the theoretical graph.