The procedure plot in Maple accepts three function types: a real function in a single variable expressed as an expression, or a Maple procedure, a parametric function, or a list of points.  If a procedure is being specified, operator notation must be used, that is, the procedure name given without parameters, and the range specified as simply a..b rather than as an equation.

A parametric function has the form $\[x\left(t\right),y\left(t\right),t=\mathrm{range}\mathrm{of}t\]$. If the option coords=polar is given, the parametric function is interpreted in polar coordinates.  Points will be equally spaced along the interval specified by the range of t in the parametric plot specification.  The points will not be evenly spaced according to the $x\left(t\right)y\left(t\right)$ specified.  The set of lists must contain one undefined variable in it.  If each list contained an undefined variable, then a terminal error would occur.  Hence, all parametric plots must be parametric with respect to the same variable.

A list of points has the form $\[\[\mathrm{x1},\mathrm{y1}\],\[\mathrm{x2},\mathrm{y2}\],...,\[\mathrm{xn},\mathrm{yn}\]\]$.

$\mathrm{plot}\left(\sin \left(x\right)\,x=-\mathrm{\pi }..\mathrm{\pi }\,y=-1..1\right)$

$\mathrm{plot}\left(\left[\sin \left(t\right)\,t^3\,t=7..22\right]\right)$

$\mathrm{plot}\left(\sin \,-\mathrm{\pi }..\mathrm{\pi }\right)$

w:=proc(x) if x<0 then -x elif (x>0) and (x<4) then x else -x+8 end if end proc:

$\mathrm{plot}\left(w\&comma;-5..6\right)$

$\mathrm{plot}\left('-w\left(x\right)'\&comma;x=-5..6\right)$

$\mathrm{plot}\left(\left[\left[5\&comma;5\right]\&comma;\left[6\&comma;6\right]\&comma;\left[7\&comma;8\right]\&comma;\left[9\&comma;20\right]\right]\right)$