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Unit: SDL_rchart
Class: TContourPlot
Declaration: [1] procedure DrawTo (x,y: double);
[2] procedure DrawTo (x,y: integer);
[3] procedure DrawTo (x: integer; y: double);
[4] procedure DrawTo (x: double; y: integer);

DrawTo can draw in two different coordinate systems: version [1] uses the world coordinates (these are the coordinates shown at the axes of the chart), version [2] uses the screen coordinates in pixels, versions [3] and [4] provide a mixed coordinates mode. Using screen coordinates has the effect that the end of the line remains at a fixed position even if the chart is panned or zoomed.

Note that the cursor position is updated to the position [x,y]. The line width may be adjusted by the property LineWidth. The color of the voids in dashed lines is controlled by the property FillColor.

Hint: In the Light Edition the number of chart elements is restricted to 1000 elements.

Last Update: 2017-Okt-18