import matplotlib.pyplot as plt
def make_patch_spines_invisible(ax):
par2.set_frame_on(True)
par2.patch.set_visible(False)
for sp in par2.spines.itervalues():
sp.set_visible(False)
def make_spine_invisible(ax, direction):
if direction in ["right", "left"]:
ax.yaxis.set_ticks_position(direction)
ax.yaxis.set_label_position(direction)
elif direction in ["top", "bottom"]:
ax.xaxis.set_ticks_position(direction)
ax.xaxis.set_label_position(direction)
else:
raise ValueError("Unknown Direction : %s" % (direction,))
ax.spines[direction].set_visible(True)
if 1:
fig = plt.figure(1)
host = fig.add_subplot(111)
host.set_xlabel("Distance")
par1 = host.twinx()
par2 = host.twinx()
par2.spines["right"].set_position(("axes", 1.2))
make_patch_spines_invisible(par2)
make_spine_invisible(par2, "right")
plt.subplots_adjust(right=0.75)
p1, = host.plot([0, 1, 2], [0, 1, 2], "b-", label="Density")
p2, = par1.plot([0, 1, 2], [0, 3, 2], "r-", label="Temperature")
p3, = par2.plot([0, 1, 2], [50, 30, 15], "g-", label="Velocity")
host.set_xlim(0, 2)
host.set_ylim(0, 2)
par1.set_ylim(0, 4)
par2.set_ylim(1, 65)
host.set_xlabel("Distance")
host.set_ylabel("Density")
par1.set_ylabel("Temperature")
par2.set_ylabel("Velocity")
host.yaxis.label.set_color(p1.get_color())
par1.yaxis.label.set_color(p2.get_color())
par2.yaxis.label.set_color(p3.get_color())
tkw = dict(size=4, width=1.5)
host.tick_params(axis='y', colors=p1.get_color(), **tkw)
par1.tick_params(axis='y', colors=p2.get_color(), **tkw)
par2.tick_params(axis='y', colors=p3.get_color(), **tkw)
host.tick_params(axis='x', **tkw)
lines = [p1, p2, p3]
host.legend(lines, [l.get_label() for l in lines])
plt.show()
Keywords: python, matplotlib, pylab, example, codex (see Search examples)