matplotlib:如何降低子图中刻度线标签的密度? [英] matplotlib: how to decrease density of tick labels in subplots?

问题描述

我希望降低不同子图上刻度线标签的密度

I'm looking to decrease density of tick labels on differing subplot

import pandas as pd
import matplotlib.pyplot as plt
import matplotlib.gridspec as gridspec
from StringIO import StringIO
data = """\
    a   b   c   d
z   54.65   6.27    19.53   4.54
w   -1.27   4.41    11.74   3.06
d   5.51    3.39    22.98   2.29
t   76284.53    -0.20   28394.93    0.28
"""
df = pd.read_csv(StringIO(data), sep='\s+')
gs = gridspec.GridSpec(3, 1,height_ratios=[1,1,4] )
ax0 = plt.subplot(gs[0])
ax1 = plt.subplot(gs[1])
ax2 = plt.subplot(gs[2])
df.plot(kind='bar', ax=ax0,color=('Blue','DeepSkyBlue','Red','DarkOrange'))
df.plot(kind='bar', ax=ax1,color=('Blue','DeepSkyBlue','Red','DarkOrange'))
df.plot(kind='bar', ax=ax2,color=('Blue','DeepSkyBlue','Red','DarkOrange'),rot=45)
ax0.set_ylim(69998, 78000)
ax1.set_ylim(19998, 29998)
ax2.set_ylim(-2, 28)
ax0.legend().set_visible(False)
ax1.legend().set_visible(False)
ax2.legend().set_visible(False)
ax0.spines['bottom'].set_visible(False)
ax1.spines['bottom'].set_visible(False)
ax1.spines['top'].set_visible(False)
ax2.spines['top'].set_visible(False)
ax0.xaxis.set_ticks_position('none')
ax1.xaxis.set_ticks_position('none')
ax0.xaxis.set_label_position('top')
ax1.xaxis.set_label_position('top')
ax0.tick_params(labeltop='off')
ax1.tick_params(labeltop='off', pad=15)
ax2.tick_params(pad=15)
ax2.xaxis.tick_bottom()
d = .015
kwargs = dict(transform=ax0.transAxes, color='k', clip_on=False)
ax0.plot((-d,+d),(-d,+d), **kwargs)
ax0.plot((1-d,1+d),(-d,+d), **kwargs)
kwargs.update(transform=ax1.transAxes)
ax1.plot((-d,+d),(1-d,1+d), **kwargs)
ax1.plot((1-d,1+d),(1-d,1+d), **kwargs)
ax1.plot((-d,+d),(-d,+d), **kwargs)
ax1.plot((1-d,1+d),(-d,+d), **kwargs)
kwargs.update(transform=ax2.transAxes)
ax1.plot((-d,+d),(1-d/4,1+d/4), **kwargs)
ax1.plot((1-d,1+d),(1-d/4,1+d/4), **kwargs)
plt.show()

这导致

我想减少两个较高的子图中的刻度标签.怎么做 ?谢谢.

I would like to decrease tick labels in the two upper subplots. How to do that ? Thanks.

奖金:1)如何在条形的基础上消除y = 0上的虚线? 2)如何摆脱子图0和1之间的x-trick标签? 3)如何将图的背面设置为透明? (请参见在图的后面消失的右下角y轴折线)

Bonus: 1) how to get rid of the dotted line on y=0 at the basis of the bars? 2) how to get rid of x-trick label between subplot 0 and 1? 3) how to set the back of the plot to transparency? (see the right-bottom broken y-axis line that disappears behind the back of the plot)

推荐答案

您可以将刻度设置到所需的位置，就像设置xticks一样.

You can set the ticks to where you want just like you set the xticks.

import numpy as np
ax0.yaxis.set_ticks(np.arange(70000,80000,2500))

这将为ax0子图均匀分布四个刻度.您可以对其他子图执行类似的操作.

This will create four ticks evenly spaced for your ax0 subplot. You can do something similar for your other subplots.

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