r = sin(n⋅θ) describes the rose (white) in polar coordinates with n > 0
Points on the rose: P_{k} = (sin(n⋅k), k), k = 0, d, 2d, 3d, ..., 360d with the natural number d > 0 (angle in degrees)
z subdivides the circle, instead of the usual 360°

You can also try values like z = 359.999, n = 45, d = 261, giving figures like this: (.svg)/(.pdf)

Save as SVG (to reduce calculation time just switch off the rose via its stroke-width):