matplotlib:直方图和bin标签 [英] matplotlib: histogram and bin labels

问题描述

我正在尝试用条形图绘制直方图，并且在弄清楚如何将x轴标签与实际纸箱对齐时遇到困难.下面的代码生成以下图:

I'm trying to plot a histogram with bar chart, and I'm having difficulties figuring out how to align the x-axis labels with the actual bins. The code below generates the following plot:

每个x标签的末端未对准其容器的中心.我考虑的方式是:当我进行45度旋转时，标签围绕其几何中心旋转.我想知道是否有可能将枢轴移到标签的顶部. (或者只是将所有标签稍微向左平移.)

as you can see, the end of each x-label is not aligned to the center of its bin. The way i'm thinking about this is: when i apply a 45-degree rotation, the label pivots around its geometrical center. I was wondering if it's possible to move the pivot up to the top of the label. (Or simply translate all the labels slightly left.)

import matplotlib.pyplot as plt
import numpy as np

#data
np.random.seed(42)
data = np.random.rand(5)
names = ['A:GBC_1233','C:WERT_423','A:LYD_342','B:SFS_23','D:KDE_2342']

ax = plt.subplot(111)
width=0.3
bins = map(lambda x: x-width/2,range(1,len(data)+1))
ax.bar(bins,data,width=width)
ax.set_xticks(map(lambda x: x, range(1,len(data)+1)))
ax.set_xticklabels(names,rotation=45)

plt.show()

推荐答案

使用:

ax.set_xticklabels(names,rotation=45, rotation_mode="anchor", ha="right")

输出为:

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