這是一個繪製矩陣的函式。

用matshow繪製矩陣的例子：

import matplotlib.pyplot as plt
import numpy as np
 
def samplemat(dims):
 """Make a matrix with all zeros and increasing elements on the diagonal"""
 aa = np.zeros(dims)
 for i in range(min(dims)):
  aa[i,i] = i
 return aa
 
# Display matrix
plt.matshow(samplemat((15,15)))
 
plt.show()

效果圖：

補充知識：利用matplotlib將矩陣畫成三維圖

import cv2 as cv
import numpy as np
import matplotlib.pyplot as plt
from matplotlib import cm
from mpl_toolkits import mplot3d
 
cap = cv.VideoCapture(0)
cpframe = None
while True:
 ret,frame = cap.read()
 cv.imshow("video",frame)
 if cv.waitKey(1) & 0xFF ==ord('q'):
  cpframe = frame
  break
 
img_gray = cv.cvtColor(cpframe,cv.COLOR_RGB2GRAY)
 
Y = np.arange(0,np.shape(img_gray)[0],1)
X = np.arange(0,np.shape(img_gray)[1],1)
X,Y = np.meshgrid(X,Y)
fig = plt.figure()
ax = plt.axes(projection="3d")
ax.plot_surface(X,Y,img_gray,cmap=cm.gist_rainbow)
plt.show()

以上這篇matplotlib.pyplot.matshow 矩陣視覺化例項就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支援我們。