Is it possible to draw R + θ + [itex]\varphi[/itex] (spherical coordinate system) and/or r + [itex]\varphi[/itex] + z (cylindrical coordinate system)? I know that for the Cartesian system, all you need to do is set the point P equal to the coefficients of the unit vectors. For example, x + y + z would give you P = (1, 1, 1). I know this doesn't apply to spherical and coordinate systems though. Is there a way to draw either of those vectors? I am mainly confused because theta and phi do not have units of distance... From reading http://www.brown.edu/Departments/Engineering/Courses/En3/Notes/Vector_Web2/Vectors6a/Vectors6a.htm" [Broken], I believe there is a way to draw the cylindrical coordinates from the given vector, but I am not sure how to do this. Any help would be appreciated. Thanks.