How do I rotate the z-label so the text reads (bottom => top) rather than (top => bottom)?
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.set_zlabel('label text flipped', rotation=90)
ax.azim = 225
plt.show()
I want this to hold no matter what my ax.azim
setting is. This seems to be an old feature request on github but there isn't a work on it. Is there a workaround?
As a workaround, you could set the direction of the z-label manually by:
ax.zaxis.set_rotate_label(False) # disable automatic rotation
ax.set_zlabel('label text', rotation=90)
Please note that the direction of your z-label also depends on your viewpoint, e.g:
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
fg = plt.figure(1); fg.clf()
axx = [fg.add_subplot(4,1,1+i, projection='3d') for i in range(4)]
for ax,azel in zip(axx, [(115,10), (115,-10), (-115,10), (-115,-10)]):
ax.set_title(u"Azim, elev = {}°, {}°".format(*azel))
ax.set_zlabel('label text')
ax.azim, ax.elev = azel
fg.canvas.draw()
plt.show()
gives
Update: It is also possible, to adjust the z-label direction of a plot, which is already drawn (but not beforehand). This is the adjusted version to modify the labels:
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
fg = plt.figure(1); fg.clf()
axx = [fg.add_subplot(4,1,1+i, projection='3d') for i in range(4)]
for ax,azel in zip(axx, [(115,10), (115,-10), (-115,10), (-115,-10)]):
ax.set_title(u"Azim, elev = {}°, {}°".format(*azel))
ax.set_zlabel('label text')
ax.azim, ax.elev = azel
fg.canvas.draw() # the angles of the text are calculated here
# Read drawn z-label rotations and switch them if needed
for ax in axx:
ax.zaxis.set_rotate_label(False)
a = ax.zaxis.label.get_rotation()
if a<180:
a += 180
ax.zaxis.label.set_rotation(a)
a = ax.zaxis.label.get_rotation() # put the actual angle in the z-label
ax.set_zlabel(u'z-rot = {:.1f}°'.format(a))
fg.canvas.draw()
plt.show()