19.8.2  Curves in polar coordinates

The plotpolar or polarplot or DrawPol or courbe_polaire command draws a curve given in polar coordinates.

• polarplot takes two arguments:
  • expr, an expression involving a variable (which will represent the angle).
  • var, the variable. This can optionally include the range var=a..b.
  • Optionally, tstep=n to specify the discretization.
  polarplot(expr,var ⟨,tstep=n ⟩) draws the curve defined by ρ=expr for θ=var; in Cartesian coordinates that is the curve (expr·cos(var),expr·sin(var)).

Examples

or: