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我正在尝试使用一些数据创建一个简单的条形图（这里是硬编码的，但我会在某个时候从文件中读取它）。到目前为止，我能够获得条形图，但我希望属性“功能名称”位于每个条形下方。现在，我只得到数字 1 到 16。我可以做些什么来使每个栏下的每个功能？

我的代码：

import matplotlib.pyplot as plt
import numpy as np
import mpld3

fig, ax = plt.subplots()

N = 17
feature_name = ('AccountLength','Intlact','Vmailact','Vmailnumber','day minutes','day calls','day charge','evening minutes','evening calls','evening charge','night minutes','night calls','night charge','intl minutes','intl calls','intl charge','cust calls')
importance = (0.0304,0.0835,0.0222,0.0301,0.1434,0.0315,0.1354,0.0677,0.0268,0.0669,0.0386,0.0286,0.0371,0.0417,0.0521,0.0434,0.1197)
ind = np.arange(N)
width = 0.20
rects = ax.bar(ind, importance, width, color = 'r')
ax.grid(color='white', linestyle='solid')

ax.set_title("Why are my customers churning?", size=20)
ax.set_ylabel('Importance in percentage')
ax.set_xlabel('Feature Name')
ax.set_xticklabels( (feature_name) )
labels = (feature_name)
tooltip = mpld3.plugins.PointLabelTooltip(rects, labels=labels)
mpld3.plugins.connect(fig, tooltip)

mpld3.show()

编辑：事实证明，如果我使用 plt.show()，我可以看到刻度标签，但是当我尝试在 mpld3 中做同样的事情时，它不起作用。还想知道为什么工具提示没有出现。

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2 回答 2

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我认为答案为时已晚，但也许这可以帮助其他人。

将文本设置为刻度标签似乎在mpld3包中确实存在一些问题，但是当我将一些数据绘制到某些范围值时，我能够做到这一点，然后将刻度设置为这个范围，最后将刻度标签设置为需要的标签。

from matplotlib import pyplot as plt
import numpy as np
import mpld3

fig, ax = plt.subplots()

feature_name = ('AccountLength','Intlact','Vmailact','Vmailnumber','day minutes','day calls','day charge','evening minutes','evening calls','evening charge','night minutes','night calls','night charge','intl minutes','intl calls','intl charge','cust calls')
importance = (0.0304,0.0835,0.0222,0.0301,0.1434,0.0315,0.1354,0.0677,0.0268,0.0669,0.0386,0.0286,0.0371,0.0417,0.0521,0.0434,0.1197)
ind = range(1, len(feature_name)+1)
width = 0.20

rects = ax.bar(ind, importance, width, color = 'r')

ax.grid(linestyle='solid')
ax.set_title("Why are my customers churning?", size=20)
ax.set_ylabel('Importance in percentage')
ax.set_xlabel('Feature Name')
ax.set_xticks(ind)
ax.set_xticklabels(feature_name)

mpld3.show()

结果：

mpld3 刻度标签示例

有一个额外的工作人员与刻度轮换有关（在mpld3中也不支持）。也许可以编写自定义插件来实现这一点。如果有人需要这个，我会更新答案。

于 2018-05-03T11:40:57.687 回答
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mpld3 不支持设置刻度标签和位置。见第 22 期。

工具提示不会出现，因为PointLabelTooltip()函数接受 matplotlib Collection 或 Line2D 对象作为输入，同时plt.bar()返回 BarContainer 对象。

UPD：刻度标签使用版本 0.2 和 0.3git 进行了测试。

于 2016-03-13T12:27:00.720 回答