Matplotlib寄生虫对数轴剔除不需要的镜像 [英] Matplotlib parasite logarithmic axis ticks unwanted mirrorring
问题描述
我正在尝试使用mpl_toolkits.axes_grid1中的host_subplot绘制两个y轴的图,其中一个是对数的,一个是线性的.该图看起来还不错,除了图中内侧的次要y轴(右侧)上的次要刻度线也显示在主要y轴(左侧)上.
I'm trying to make a plot with two y-axes, one of them logarithmic and one linear, using host_subplot from mpl_toolkits.axes_grid1. The figure looks ok, with the exception of the minor ticks from the secondary y-axis (right) being also displayed on the primary y-axis (left), on the inside of the figure.
import matplotlib.pyplot as plt
from mpl_toolkits.axes_grid1 import host_subplot
import mpl_toolkits.axisartist as AA
host = host_subplot(111)
host.set_yticks(np.arange(-12, -3, 1.0))
par1 = host.twinx()
par1.set_ylim( 2.7040e+3, 1.3552e+7)
par1.set_yscale('log')
minorLocator_x1 = MultipleLocator(0.3333)
minorLocator_y1 = MultipleLocator(0.5)
host.xaxis.set_minor_locator(minorLocator_x1)
host.yaxis.set_minor_locator(minorLocator_y2)
我可以使用以下方法修复镜像的次对数轴刻度:
I can fix the mirrored minor logarithmic axis ticks by using:
host = host_subplot(111, axes_class=AA.Axes)
但是,这带来了另一个问题,即x轴刻度标签也显示在图形的内部,就像x轴标签一样.
However, this creates another problem, namely that the x-axis tick labels are displayed on the inside of the figure, just as the x-axis label is too.
关于如何规避问题的任何想法?
Any ideas on how to circumvent the problems?
推荐答案
我找到了解决此问题的解决方法,但没有使用mpl_toolkits.axes_grid1中的host_subplot.相反,我使用matplotlib轴,如下所示:
I found a workaround that solves the problem, but not by using host_subplot from mpl_toolkits.axes_grid1. Instead, I use matplotlib axes, as follows:
fig, ax1 = plt.subplots()
ax1.set_xlim(-0.25, 5.1)
ax1.set_ylim(-3.75, -13)
ax2=ax1.twinx()
ax1.set_xlabel('X-label', fontdict=font)
ax1.set_ylabel('Y1-label$', rotation='horizontal', fontdict=font)
ax2.set_ylabel('Y2-label', rotation='horizontal', fontdict=font)
ax2.set_ylim(2.7040e+3, 1.3552e+7)
ax2.set_yscale('log')
ax1.set_yticks(np.arange(-12, -3, 1.0))
ml = MultipleLocator(0.5)
minorLocator = MultipleLocator(0.3333)
ax1.xaxis.set_minor_locator(minorLocator)
ax1.yaxis.set_minor_locator(ml)
这将产生正确的图.在我看来,以前的问题是第一种情况(不使用axes_class = AA.host_subplot中的轴)的刻度线(set_minor_locator)的模糊分配.
This produces the right plot. It looks to me that the problem before was the fuzzy assignment of the ticks (set_minor_locator) in the first case (without using axes_class=AA.Axes in host_subplot).
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