Copy
Copy
创建给定矩阵/向量的副本。
bool matrix::Copy(
const matrix& a // 复制的矩阵
);
bool vector::Copy(
const vector& v // 复制的向量
);参数
- v
[输入] 欲复制的矩阵或矢量。
返回值
成功时返回 true，否则返回 false。
MQL5 示例:
matrix a=matrix::Eye(3, 4);
matrix b;
b.Copy(a);
matrix c=a;
Print("matrix b \n", b);
Print("matrix_c \n", c);
/*
/*
matrix b
[[1,0,0,0]
[0,1,0,0]
[0,0,1,0]]
matrix_c
[[1,0,0,0]
[0,1,0,0]
[0,0,1,0]]
*/
*/Python 示例:
import numpy as np
a = np.eye(3,4)
print('a \n',a)
b = a
print('b \n',b)
c = np.copy(a)
print('c \n',c)
a
[[1. 0. 0. 0.]
[0. 1. 0. 0.]
[0. 0. 1. 0.]]
b
[[1. 0. 0. 0.]
[0. 1. 0. 0.]
[0. 0. 1. 0.]]
c
[[1. 0. 0. 0.]
[0. 1. 0. 0.]
[0. 0. 1. 0.]]