Fig. 6.

Cloverleaf: typical results from the affine analysis of the drawings of a cloverleaf. Shown are one cycle of drawing (upper left panel), a plot of the affine speed versus time for several repetitions of the drawing of a cloverleaf (upper right panel), a “zoomed in” portion of the upper right panel, showing the affine speed versus time for one cycle of the cloverleaf (middle left panel) and a plot of the affine arc-length versus time for several repetitions of the drawing (middle right panel). Also shown is a plot of the affine curvature versus time for one cycle of the cloverleaf (bottom left panel) and the affine signature curve for one complete cycle of the cloverleaf (bottom right panel)