matplotlib绘制等高线图
参考自Matplotlib Python 画图教程 (莫烦Python)(12)_演讲•公开课_科技_bilibili_哔哩哔哩 https://www.bilibili.com/video/av16378354/index_10.html#page=12
"""绘制等高线图""" import numpy as np import matplotlib.pyplot as plt def calcu_elevation(x1, y1): # 计算高程 ele = (1-x1/2+x1**5+y1**3)*np.exp(-x1**2-y1**2) return ele n = 256 x = np.linspace(-3, 3, n) y = np.linspace(-3, 3, n) X, Y = np.meshgrid(x, y) # 将原始数据变为网格数据 # 填充等高线的颜色, 8是等高线分为几部分 plt.contourf(X, Y, calcu_elevation(X, Y), 8, alpha=0.75, cmap=plt.cm.hot) # 8表示要分几部分等高线 # 画等高线 C = plt.contour(X, Y, calcu_elevation(X, Y), 8, colors='black', linewidth=0.5) plt.clabel(C, inline=True, fontsize=10) # 添加文字标签 inlins表示等高线是穿过数字还是不穿过 plt.xticks([]) plt.yticks([]) plt.show()