源代码说明： This is a set of 32 bit Delphi components and classes for 2D plot. It is relatively simple. It is more gauge then presentation element. The main features are:
Two horizontal and two vertical axis.
Auto minimum and maximum of the axis.
Swap of Min and Max axis positions.
MoveMinMax method to provide smooth scrolling of axis ticks.
Panning and Zoom by mouse.
Buffered screen paint, can be off.
Copy to clipboard as DIB or as Metafile.
Custom Data Series.
DrawPlot method to replicate plot image
OnDraw events

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