I had to create Cross plot for one of my university exam (of Computer Aided Geometric Design). Here is little more info. Note that source files are available

Parametric Bezier curves are composed of coordinate functions: each component is a Bezier function. For two-dimensional curves, this can be used to construct the cross plot of curve. Image shows the decomposition of a Bezier curve into its two coordinate functions. A cross plot can be very helpful tool for the investigation not only of Bezier curves, but of general two-dimensional curves. We will use it for the analysis of Bezier and B-spline curves. It can be generalized to more then two dimensions, but is not as useful then.

Cross plot

You can see the example here.
Source files

info about program:

cross plot lines & symbols counter printscreen

Printscreen:

cross plot printscreen

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