making horizontal axes labels in plots

hi all,

i am trying to make horizontal (as opposed to the default vertical)
rotated labels for axes in my subplots. i tried using the
'orientation' optional argument, as follows:

from numpy import *
from scipy import *
from mpl_toolkits.axes_grid.axislines import SubplotZero
import matplotlib.pyplot as plt
fig = plt.figure()
ax = SubplotZero(fig, 3, 1, 1)
ax1 = fig.add_subplot(ax)
ax.axis["xzero"].set_visible(True)
plt.plot([1,2,3], label="line a", c='r')
plt.plot([1.2, 2.4, 3.01], label="line b", c='b')
plt.ylabel("hello", rotation='horizontal')
ax = SubplotZero(fig, 3, 1, 2)
ax2 = fig.add_subplot(ax)
plt.plot([1,2,3], label="line a", c='r')
plt.plot([1.2, 2.4, 3.01], label="line b", c='b')
plt.ylabel("world")
ax = SubplotZero(fig, 3, 1, 3)
ax3 = fig.add_subplot(ax)
plt.plot([1,2,3], label="line a", c='r')
plt.plot([1.2, 2.01, 3.01], label="line b", c='b')
plt.figlegend([ax1.lines[0], ax1.lines[1]], ["line a", "line b"], 'upper right')

but it does not work. both the labels "hello" and "world" of the y
axes are displayed in their default vertical orientation. the argument
seems to have no effect. i am using matplotlib '0.99.0' on Mac OS X.
any ideas how to fix this?

thanks.

First of all, I recommend you to use spines instead of SubplotZero of
axes_grid toolkit.

http://matplotlib.sourceforge.net/examples/pylab_examples/spine_placement_demo.html

If you use axes_grid toolkit, keep in mind that some axis-related
command of matplotlib may not work. Please take a look at the
documentation.

http://matplotlib.sourceforge.net/mpl_toolkits/axes_grid/users/overview.html#axisline

If something does not work, see if

ax.axis["xzero"].set_visible(True)

solves the problem. This will recover the original behavior of
matplotlib, but some functionality of axes_grid toolkit may not work
anymore.

To have a horizontal label with axes_grid,

ax.axis["left"].get_helper()._label_angles["left"]=0

While it is best if something like
ax.axis["left"].label.set_rotation("horizontal") work, but it does not
currently. I'll try to fix this in time but use one of the options
above.

Regards,

-JJ

ยทยทยท

On Sun, Oct 11, 2009 at 8:09 PM, per freem <perfreem@...287...> wrote:

hi all,

i am trying to make horizontal (as opposed to the default vertical)
rotated labels for axes in my subplots. i tried using the
'orientation' optional argument, as follows:

from numpy import *
from scipy import *
from mpl_toolkits.axes_grid.axislines import SubplotZero
import matplotlib.pyplot as plt
fig = plt.figure()
ax = SubplotZero(fig, 3, 1, 1)
ax1 = fig.add_subplot(ax)
ax.axis["xzero"].set_visible(True)
plt.plot([1,2,3], label="line a", c='r')
plt.plot([1.2, 2.4, 3.01], label="line b", c='b')
plt.ylabel("hello", rotation='horizontal')
ax = SubplotZero(fig, 3, 1, 2)
ax2 = fig.add_subplot(ax)
plt.plot([1,2,3], label="line a", c='r')
plt.plot([1.2, 2.4, 3.01], label="line b", c='b')
plt.ylabel("world")
ax = SubplotZero(fig, 3, 1, 3)
ax3 = fig.add_subplot(ax)
plt.plot([1,2,3], label="line a", c='r')
plt.plot([1.2, 2.01, 3.01], label="line b", c='b')
plt.figlegend([ax1.lines[0], ax1.lines[1]], ["line a", "line b"], 'upper right')

but it does not work. both the labels "hello" and "world" of the y
axes are displayed in their default vertical orientation. the argument
seems to have no effect. i am using matplotlib '0.99.0' on Mac OS X.
any ideas how to fix this?

thanks.

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