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2.0b4, example modified fromhttp://matplotlib.org/users/path_tutorial.html#bezier-example
import matplotlib.pyplot as pltfrom matplotlib.path import Pathimport matplotlib.patches as patchesverts = [ (0., 0.), # P0 (0.2, 1.), # P1 (1., 0.8), # P2 (0.8, 0.), # P3 ]codes = [Path.MOVETO, Path.CURVE4, Path.CURVE4, Path.CURVE4, ]path = Path(verts, codes)fig, axs = plt.subplots(2)patch = patches.PathPatch(path, facecolor='none', lw=2)axs[0].add_patch(patch)xs, ys = zip(*verts)axs[0].plot(xs, ys, 'x--', lw=2, color='black', ms=10)patch = patches.PathPatch(path, facecolor='none', lw=2)axs[1].add_patch(patch)plt.show()
Note how the bottom axes have their limits set as if using the positions of the bézier control points (on the unit square), with no margins.