主要内容:
- pyplot基础图表函数概述
- pyplot饼图的绘制
- pyplot直方图的绘制
- pyplot极坐标图的绘制
- pyplot散点图的绘制
(1)pyplot基础图表函数概述
(2)pyplot饼图的绘制
import matplotlib.pyplot as plt labels = ['Frogs', 'Hogs','Dogs','Logs'] sizes = [15,30,45,10] explode = (0, 0.1, 0, 0) #第2部分突出出来 plt.pie(sizes,explode=explode,labels=labels,autopct='%1.1f%%',shadow=False,startangle=90) #shadow表示是二维饼图还是带有阴影的效果 plt.axis('equal') #x和y方向尺寸相等,把饼图由扁圆变为正圆 plt.show()
(3)pyplot直方图的绘制
import matplotlib.pyplot as plt import numpy as np np.random.seed(0) mu,sigma =100, 20#均值和标准差 a = np.random.normal(mu,sigma,size=100) plt.hist(a,20,normed = 1,histtype = 'stepfilled',facecolor= 'b',alpha=0.75) #第二个参数bin表示直方图的个数 plt.title( 'Histogram') plt.show()
(4)pyplot极坐标图的绘制
面向对象绘制极坐标图
import matplotlib.pyplot as plt import numpy as np N = 20 #数据的个数 theta=np.linspace(0.0,2*np.pi,N,endpoint=False) radii=18 * np.random.rand(N) width=np.pi/4*np.random.rand(N) ax = plt.subplot(111,projection='polar') bars =ax.bar(theta,radii,width=width,bottom=0.0) for r,bar in zip(radii,bars): bar.set_facecolor(plt.cm.viridis(r/10.)) bar.set_alpha(0.5) plt.show()View Code
(5)pyplot散点图的绘制
面向对象绘制散点图
fig,ax = plt.subplots() ax.plot(10*np.random.randn(100),10*np.random.randn(100),'o') ax.set_title('Simple Scatter') plt.show()