Tri
Tri
This is a static function Construct a matrix with ones at and below the given diagonal and zeros elsewhere.
static matrix matrix::Tri(
const ulong rows, // number of rows
const ulong cols, // number of columns
const int ndiag=0 // number of diagonal
);Parameters
- rows
[in] Number of rows in the array.
- cols
[in] Number of columns in the array.
- ndiag=0
[in] The sub-diagonal at and below which the array is filled. k = 0 is the main diagonal, while k < 0 is below it, and k > 0 is above. The default is 0.
Return Value
Array with its lower triangle filled with ones and zero elsewhere.
MQL5 example:
matrix matrix_a=matrix::Tri(3,4,1);
Print("Tri(3,4,1)\n",matrix_a);
matrix_a=matrix::Tri(4,3,-1);
Print("Tri(4,3,-1)\n",matrix_a);
/*
Tri(3,4,1)
[[1,1,0,0]
[1,1,1,0]
[1,1,1,1]]
Tri(4,3,-1)
[[0,0,0]
[1,0,0]
[1,1,0]
[1,1,1]]
*/Example
np.tri(3, 5, 2, dtype=int)
array([[1, 1, 1, 0, 0],
[1, 1, 1, 1, 0],
[1, 1, 1, 1, 1]])Last updated on