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Unit: SDL_rchart
Class: TContourPlot
Declaration: property NumPivotsX: integer;

The NumPivotsX specifies the number of pivot points along the horizontal axis. The number of pivot points may be set to values between 2 and 1000.

The following figure shows the pivot points on top of a colored contour surface. The property NumPivotsX has been set to 21. Thus the x-axis is divided into 20 sections (21 pivot points).

Hint 1: The resolution of the contour plot may be controlled either by the properties NumPivotsX and NumPivotsY or by the property PivotResolution. The difference between these two kinds of resolution settings is that NumPivotsX and NumPivotsY allow to control the number of pivot points exactly while the property PivotResolution automatically adjusts the number of pivot points along the x- and the y-axis such that the contour plot is divided into roughly square regions.

Hint 2: Please note that the time to calculate a contour plot is roughly proportional to the product of the properties NumPivotsX and NumPivotsY.

Example: This method is used in the following example program (see for downloading the code): contplot

Last Update: 2015-May-31