Tecplot 360 EX add-ons can provide new curve-fit types. These curve types are called extended curve-fits. These curve-fits may be provided by Tecplot 360 EX, a third party, or written by users. The functionality of each extended curve-fit is defined by its creator.
To fit an extended curve to your data:
1.Use the Curves tab of the Mapping Style dialog to select the mappings for which you want to apply an extended curve-fit.
2.Right-click Curve Type, and select an option from the drop-down.
3.The extended curve fit options are located below the separation line (shown below).
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Extended Curve fits can also be selected by the right-click context menu on a line plot. Simply right-click on the line you wish to change, hover over Curve Type, and a similar drop-down menu will appear as above.Three extended curve fit add-ons are supplied with Tecplot 360 EX:
• Akima - The Akima spline is an alternative that exhibits less dramatic overshoots and undershoots than the classical spline. The slopes at the end of each segment are computed using a nonlinear average of the segment slopes1. The Akima spline is always unclamped. There are currently no options available for the Akima spline.