paramete.spad line 1 [edit on github]
ParametricPlaneCurve is used for plotting parametric plane curves in the affine plane.
coordinate(c, i)
returns a coordinate function for c
using 1-based indexing according to i
. This indicates what the function for the coordinate component i
of the plane curve is.
curve(c1, c2)
creates a plane curve from 2 component functions c1
and c2
.