我有这个代码,它是有效的。似乎有更好的方法可以做到这一点。有人知道更清洁的解决方案吗
def Matrix2toMatrix(Matrix2):
scaleSize = len(Matrix2[0, 0])
FinalMatrix = np.empty([len(Matrix2)*scaleSize, len(Matrix2[0])*scaleSize])
for x in range(0, len(Matrix2)):
for y in range(0, len(Matrix2[0])):
for xFinal in range(0, scaleSize):
for yFinal in range(0, scaleSize):
FinalMatrix[(x*scaleSize)+xFinal, (y*scaleSize)+yFinal] = Matrix2[x, y][xFinal, yFinal]
return FinalMatrix
这里Matrix2是一个4x4矩阵,每个单元格包含一个2x2矩阵
完整代码,以防有人怀疑:
import matplotlib.pyplot as plt
import numpy as np
def Matrix2toMatrix(Matrix2):
scaleSize = len(Matrix2[0, 0])
FinalMatrix = np.empty([len(Matrix2)*scaleSize, len(Matrix2[0])*scaleSize])
for x in range(0, len(Matrix2)):
for y in range(0, len(Matrix2[0])):
for xFinal in range(0, scaleSize):
for yFinal in range(0, scaleSize):
FinalMatrix[(x*scaleSize)+xFinal, (y*scaleSize)+yFinal] = Matrix2[x, y][xFinal, yFinal]
return FinalMatrix
XSize = 4
Xtest = np.array([[255, 255, 255, 255]
,[255, 255, 255, 255]
,[127, 127, 127, 127]
,[0, 0, 0, 0]
])
scaleFactor = 2
XMarixOfMatrix = np.empty([XSize, XSize], dtype=object)
Xexpanded = np.empty([XSize*scaleFactor, XSize*scaleFactor], dtype=int) # careful, will contain garbage data
for xOrg in range(0, XSize):
for yOrg in range(0, XSize):
newMatrix = np.empty([scaleFactor, scaleFactor], dtype=int) # careful, will contain garbage data
# grab org point equivalent
pointValue = Xtest[xOrg, yOrg]
newMatrix.fill(pointValue)
# now write the data
XMarixOfMatrix[xOrg, yOrg] = newMatrix
# need to concat all matrix together to form a larger singular matrix
Xexpanded = Matrix2toMatrix(XMarixOfMatrix)
img = plt.imshow(Xexpanded)
img.set_cmap('gray')
plt.axis('off')
plt.show()
排列轴并重塑-
对于排列轴,我们也可以使用
np.transpose
或np.rollaxis
,因为它们在功能上都是相同的通过样本运行验证-
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