python中绘图时怎么改背景颜色?
python中一般使用matplotlib库进行绘图,下面我们就来看一下python中绘图时修改背景颜色的方法:
子图可以对plt.subplot的参数做修改,下面是对子图的背景颜色修改代码:
import matplotlib.pyplot as plt import numpy as np # Fixing random state for reproducibility np.random.seed(19680801) dt = 0.01 t = np.arange(0, 30, dt) nse1 = np.random.randn(len(t)) # white noise 1 nse2 = np.random.randn(len(t)) # white noise 2 s1 = np.sin(2 * np.pi * 10 * t) + nse1 s2 = np.sin(2 * np.pi * 10 * t) + nse2 s3 = np.sin(2 * np.pi * 10 * t) + nse1 s4 = np.sin(2 * np.pi * 10 * t) + nse2 fig= plt.figure(1) # 创建图表1 axs0=plt.subplot(221,facecolor='#FFDAB9') #在图标1中创建子图 axs0.plot(t, s1) #横轴与纵轴数据 axs0.set_xlim(0, 2) #限制x轴的取值范围 axs1=plt.subplot(222,facecolor='#7FFF00') axs1.plot(t, s2) axs1.set_xlim(0, 2) axs2=plt.subplot(223,facecolor='#FF7F50') axs2.plot(t, s3) axs2.set_xlim(0, 2) axs3=plt.subplot(224,facecolor='#A9A9A9') axs3.plot(t, s4) axs3.set_xlim(0, 2) plt.show()
效果如下:
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