Function add_origin

docs/code/figures.py:18–22

(ax, geom, origin)

def add_origin(ax, geom, origin):
    x, y = xy = affinity.interpret_origin(geom, origin, 2)
    ax.plot(x, y, 'o', color=GRAY, zorder=1)
    ax.annotate(str(xy), xy=xy, ha='center',
                textcoords='offset points', xytext=(0, 8))


def set_limits(ax, x0, xN, y0, yN):