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	Equation Fit Solver

Equation Fit Solver Control Panel

The control panel contains the tools frequently used with the Equation Fit Solver and includes the following options:

Tip: There is a horizontal splitter bar directly above the Main button. If you drag it as far up as it will go, all of the pages of the panel will be accessed by large buttons. If you drag it all the way down, all of the pages will be accessed by small icons. Positions in between allow you to use some large buttons and some small icons. See Control Panels.

The Add to Templates command on the control panel gives you the option to save user-defined equations as templates for future use. To use this feature, enter the equation in the Formula field, type a name for the equation and then click Add to Templates. You can also choose Equation Fit Solver > Solver Templates > Add to Templates.
To use a saved template, choose Equation Fit Solver > Solver Templates > Select from Templates or click the icon on the control panel.

This opens the Existing Equation Templates window, which shows a list of all the saved templates. The buttons at the lower left side of the window allow you to add, edit or delete templates.

The Auto Fill Parameters option allows you to automatically copy all the unknown variables in the user-defined equation (except variable x) to the Function Parameters area. If the check box is cleared, you can automatically copy the parameters of the equation to the Function Parameters area by choosing Equation Fit Solver > Analysis > Initialize Parameters or by clicking the icon on the control panel.

The Calculate Y given X tool uses the user-defined equation and the fitted parameters to calculate the value of y given the value of x. This tool is available only when you have calculated the parameters. Enter a value for x and click the Analyze button to compute the results.

The folio tools are arranged on the left side of the control panel:

Calculate estimates the parameters of the user-defined equation and calculates other results you could use to evaluate how well the function fits the data. This tool is also available by choosing Equation Fit Solver > Analysis > Calculate.

Plot creates a plot demonstrating the fit of the function for each known data point that you defined in the Data area. The scaling, setup, exporting and other features of the plot are similar to the options available for other Weibull++ plot sheets. Features that are not applicable to this plot will be hidden or disabled. This tool is also available by choosing Equation Fit Solver > Analysis > Plot.

Initialize Parameters automatically copies all the unknown variables in your equation (except the random variable x) to the Function Parameters area. This also resets the minimum, maximum and initial guess values to their default values. This tool is also available by choosing Equation Fit Solver > Analysis > Initialize Parameters.