The SDL Component Suite is an industry leading collection of components supporting scientific and engineering computing. Please visit the SDL Web site for more information....


Home ChartPack RChart Class TContourPlot Events OnEstimateZVal
See also: DrawPlot 

OnEstimateZVal

Unit: SDL_rchart
Class: TContourPlot
Declaration: property OnEstimateZVal: TEstimateZValEvent;
TEstimateZValEvent = procedure (Sender: TObject; x, y: double; var z: double) of object;

The OnEstimateZVal event occurs during the redrawing process when the contour plot component needs to know the z-value at a particular position of the ground plane. The parameters x and y specify the position on the ground plane, the variable parameter z has to return the altitude at this position.

Example: This method is used in the following example program (see http://www.lohninger.com/examples.html for downloading the code): contplot


Last Update: 2011-Jul-22