Spline Toolbox™

Franke's bivariate test function

Syntax

• z = franke(x,y)
  

Description

z = franke(x,y) returns the value z(i) of Franke's function at the site (x(i),y(i)), i=1:numel(x), with z of the same size as x and y (which must be of the same size).

Franke's function is the following weighted sum of four exponentials:

Examples

The following commands provide a plot of Franke's function:

• pts = (0:50)/50; [x,y] = ndgrid(pts,pts); z = franke(x,y);
  surf(x,y,z), view(145,-2), set(gca,'Fontsize',16)
  

References

[1]  Richard Franke, A critical comparison of some methods for interpolation of scattered data, Naval Postgraduate School Tech.Rep. NPS-53-79-003, March 1979.

Provide feedback about this page

fnzeros

getcurve

© 1984-2008- The MathWorks, Inc.    -   Site Help   -   Patents   -   Trademarks   -   Privacy Policy   -   Preventing Piracy   -   RSS