The project command takes a plot structure or object and produces a new plot structure or object.

In two dimensional case, an object can be projected on a given line.

In three dimensional case, an object can be projected on a given a line, or a given plane.

Representation:

A point is represented as a list of either two real numbers (2-D) or three real numbers (3-D).

A line is represented as a list of two distinct points.

A plane is represented as a list of three distinct points.

The result of a call to project is a 2-D or 3-D plot structure or object, which may be displayed with the plots[display] command. You can assign the data structure to a variable, save it in a file, then read it back in for redisplay.  For more information about plot data structures, see plot/structure or plot3d/structure.

Several commands in the plottools package can transform plots. For a list, see the plottools help page.  The plots[changecoords] and plots[display] commands can also be used to transform plots.