contour 和 contourf 分别绘制等高线和填充等高线

1 基本使用方法

matplotlib.pyplot.contourf([X, Y,] Z, [levels], **kwargs)

2 主要参数 

 3 举例

3.0 数据部分

import numpy as np
import matplotlib.pyplot as plt
x = np.arange(1, 10)
y = x.reshape(-1, 1)
h = x * y
print(x,'\n',y,'\n',h)
'''
[1 2 3 4 5 6 7 8 9] 
 [[1]
 [2]
 [3]
 [4]
 [5]
 [6]
 [7]
 [8]
 [9]] 
 [[ 1  2  3  4  5  6  7  8  9]
 [ 2  4  6  8 10 12 14 16 18]
 [ 3  6  9 12 15 18 21 24 27]
 [ 4  8 12 16 20 24 28 32 36]
 [ 5 10 15 20 25 30 35 40 45]
 [ 6 12 18 24 30 36 42 48 54]
 [ 7 14 21 28 35 42 49 56 63]
 [ 8 16 24 32 40 48 56 64 72]
 [ 9 18 27 36 45 54 63 72 81]]
'''

3.1 最基本

plt.contourf(x.reshape(-1),
             y.reshape(-1),
             h)

3.2 level 

plt.contourf(x.reshape(-1),
             y.reshape(-1),
             h,
             levels=1)

plt.contourf(x.reshape(-1),
             y.reshape(-1),
             h,
             levels=[1,3,15,35])

 3.3 extend

plt.contourf(x.reshape(-1),
             y.reshape(-1),
             h,
             levels=[13,15,35], 
             )

 

 

plt.contourf(x.reshape(-1),
             y.reshape(-1),
             h,
             levels=[13,15,35], 
             extend='both')