Eye
Eye
A static function. Constructs a matrix having a specified size with ones on the main diagonal and zeros elsewhere. Returns a matrix with ones on the diagonal and zeros elsewhere.
static matrix matrix::Eye(
const ulong rows, // number of rows
const ulong cols, // number of columns
const int ndiag=0 // index of the diagonal
);Parameters
- rows
[in] Number of rows in the output.
- cols
[in] Number of columns in the output.
- ndiag=0
[in] Index of the diagonal: 0 (the default) refers to the main diagonal, a positive value refers to an upper diagonal, and a negative value to a lower diagonal.
Return Value
A matrix where all elements are equal to zero, except for the k-th diagonal, whose values are equal to one.
MQL5 example:
matrix eye=matrix::Eye(3, 3);
Print("eye = \n", eye);
eye=matrix::Eye(4, 4,1);
Print("eye = \n", eye);
/*
eye =
[[1,0,0]
[0,1,0]
[0,0,1]]
eye =
[[0,1,0,0]
[0,0,1,0]
[0,0,0,1]
[0,0,0,0]]
*/Python example:
np.eye(3, dtype=int)
array([[1, 0, 0],
[0, 1, 0],
[0, 0, 1]])
np.eye(4, k=1)
array([[0., 1., 0., 0.],
[0., 0., 1., 0.],
[0., 0., 0., 1.],
[0., 0., 0., 0.]])Last updated on