Python中的 matplotlib.pyplot.pcolormesh()

Matplotlib是Python中的一个库，它是 NumPy 库的数值数学扩展。 Pyplot是Matplotlib模块的基于状态的接口，它提供了一个类似 MATLAB 的接口。

matplotlib.pyplot.pcolormesh()函数：

matplotlib 库的 pyplot 模块中的pcolormesh()函数用于创建具有非规则矩形网格的伪彩色图。

Syntax:

Parameters: This method accept the following parameters that are described below:

C : This parameter contains the values in 2D array which are to be color-mapped.
X, Y: These parameter are the coordinates of the quadrilateral corners.
cmap : This parameter is a colormap instance or registered colormap name.
norm : This parameter is the Normalize instance scales the data values to the canonical colormap range [0, 1] for mapping to colors
vmin, vmax : These parameter are optional in nature and they are colorbar range.
alpha : This parameter is a intensity of the color.
snap : This parameter is used to snap the mesh to pixel boundaries.
edgecolors : This parameter is the color of the edges. {‘none’, None, ‘face’, color, color sequence}
shading : This parameter is the fill style. It cabe flat or gouraud.

Returns: This returns the following:

mesh : This returns the matplotlib.collections.QuadMesh

编程需要懂一点英语

下面的示例说明了 matplotlib.pyplot 中的 matplotlib.pyplot.pcolormesh()函数：

示例 #1：

matplotlib.pyplot.pcolormesh(\*args, alpha=None, norm=None, cmap=None, vmin=None, vmax=None, shading='flat', antialiased=False, data=None, \*\*kwargs)

输出：

示例 #2：

# Implementation of matplotlib function
import matplotlib.pyplot as plt
import numpy as np
from matplotlib.colors import LogNorm
     
Z = np.random.rand(25, 25)
     
plt.pcolormesh(Z)
  
plt.title('matplotlib.pyplot.pcolormesh() function Example', fontweight ="bold")
plt.show()

输出：