如何在浮动圆柱轴上旋转刻度标签？

Question

http://matplotlib.org/mpl_toolkits/axes_grid/users/overview.html

查看此链接的非常底部。我对中间的那些轴感兴趣，轴对象被弯曲成四分之一垫圈的形状。如果您检查源代码，此轴对象由setup_axes2制作：

def setup_axes2(fig, rect): 
""" 
With custom locator and formatter. 
Note that the extreme values are swapped. 
""" 
tr = PolarAxes.PolarTransform() 

pi = np.pi 
angle_ticks = [(0, r"$0$"), 
      (.25*pi, r"$\frac{1}{4}\pi$"), 
      (.5*pi, r"$\frac{1}{2}\pi$")] 
grid_locator1 = FixedLocator([v for v, s in angle_ticks]) 
tick_formatter1 = DictFormatter(dict(angle_ticks)) 

grid_locator2 = MaxNLocator(2) 

grid_helper = floating_axes.GridHelperCurveLinear(
    tr, extremes=(.5*pi, 0, 2, 1), 
    grid_locator1=grid_locator1, 
    grid_locator2=grid_locator2, 
    tick_formatter1=tick_formatter1, 
    tick_formatter2=None) 

ax1 = floating_axes.FloatingSubplot(fig, rect, grid_helper=grid_helper) 
fig.add_subplot(ax1) 

# create a parasite axes whose transData in RA, cz 
aux_ax = ax1.get_aux_axes(tr) 

aux_ax.patch = ax1.patch # for aux_ax to have a clip path as in ax 
ax1.patch.zorder = 0.9 # but this has a side effect that the patch is 
# drawn twice, and possibly over some other 
# artists. So, we decrease the zorder a bit to 
# prevent this. 

return ax1, aux_ax 

当我在标签的θ轴蜱，标签总是倒挂。我不知道如何翻转它们。我也不知道如何颠倒轴标签。有谁知道这些令人困惑的浮动轴？

Answer 1

提示来自您链接的示例中的setup_axes3()。​​中的各个轴被称为ax.axis[side]，其中side是["top","bottom","left","right"]之一。从那里你会得到平常。

ax = ax2.axis["bottom"] 
ax.major_ticklabels.set_rotation(180) 
ax.set_label("foo") 
ax.label.set_rotation(180) 
ax.LABELPAD += 10 

只要做dir(ax)看看你有什么权限。