Reshape 读取和摆放顺序: Matlab VS Python
- Matlab读取：列优先(高维矩阵：靠前的维度优先)
>> b = [1,2;3,4];
>> reshape(b,1,4)
ans =
1 3 2 4
- Matalb填充：列优先(高维矩阵：靠前的维度优先)
>> b = [1 2 3 4]
b =
1 2 3 4
>> reshape(b,2,2)
ans =
1 3
2 4
- Python读取：行优先(高维矩阵：靠后的维度优先)
import numpy as np
a = np.array([[1,2],[3,4]])
b = np.reshape(a,(1,4))
print(b)
[[1 2 3 4]]
- Python填充：行优先(高维矩阵：靠后的维度优先)
import numpy as np
a = np.array([1,2,3,4])
b = np.reshape(a,(2,2))
print(b)
[[1 2]
[3 4]]
这都是默认情况，Python通过传参'C' or 'F'还是能改变顺序的。
值得一提的是，对于Matlab，没有传参改变填充顺序的机会，只能通过矩阵转置来处理。