在python中，默认情况下是无法显示中文的，如下代码：
- import matplotlib.pyplot as plt
-
- decisionNode = dict(boxstyle = "sawtooth", fc = "0.8")
- leafNode = dict(boxstyle = "round4", fc = "0.8")
- arrow_args = dict(arrowstyle = "<-")
-
- def plotNode(nodeTxt, centerPt, parentPt, nodeType) :
- createPlot.ax1.annotate(nodeTxt, xy = parentPt, xycoords = ‘axes fraction‘, xytext = centerPt, textcoords = ‘axes fraction‘, va = ‘center‘, ha = ‘center‘, bbox = nodeType, arrowprops = arrow_args)
-
- def createPlot() :
- fig = plt.figure(1, facecolor=‘white‘)
- fig.clf()
- createPlot.ax1 = plt.subplot(111, frameon = False)
- plotNode(U‘决策节点‘, (0.5, 0.1), (0.1, 0.5), decisionNode)
- plotNode(U‘叶节点‘, (0.8, 0.1), (0.3, 0.8), leafNode)
- plt.show()
-
- createPlot()
得到图像如下：
产生中文乱码的原因就是字体的默认设置中并没有中文字体，所以我们只要手动添加中文字体的名称就可以了
手动增加如下代码
- from pylab import *
- mpl.rcParams[‘font.sans-serif‘] = [‘SimHei‘]
源代码修改如下：
- import matplotlib.pyplot as plt
-
- from pylab import *
- mpl.rcParams[‘font.sans-serif‘] = [‘SimHei‘]
-
- decisionNode = dict(boxstyle = "sawtooth", fc = "0.8")
- leafNode = dict(boxstyle = "round4", fc = "0.8")
- arrow_args = dict(arrowstyle = "<-")
-
- def plotNode(nodeTxt, centerPt, parentPt, nodeType) :
- createPlot.ax1.annotate(nodeTxt, xy = parentPt, xycoords = ‘axes fraction‘, xytext = centerPt, textcoords = ‘axes fraction‘, va = ‘center‘, ha = ‘center‘, bbox = nodeType, arrowprops = arrow_args)
-
- def createPlot() :
- fig = plt.figure(1, facecolor=‘white‘)
- fig.clf()
- createPlot.ax1 = plt.subplot(111, frameon = False)
- plotNode(U‘决策节点‘, (0.5, 0.1), (0.1, 0.5), decisionNode)
- plotNode(U‘叶节点‘, (0.8, 0.1), (0.3, 0.8), leafNode)
- plt.show()
- createPlot()
最终得到图像
成功！
以上是引文:,下面是我绘制的
我自己绘制的.
原文: http://blog.csdn.net/u013038499/article/details/52449768#
Python 中，matplotlib绘图无法显示中文的问题
原文：http://www.cnblogs.com/jiftle/p/7258056.html
