KtMatrix

A kotlin implemention of Matrix, support add, multipy, dot, transpose, inverse, determinant, trace, adjugate matrix and etc.

Usage 中文说明

1. init

get a 3x3 matrix and initialize the value.

val mat = Mat(3, 3) {
    arrayOf(
            1, 2, 3,
            1, 0, -1,
            0, 1, 1
    )
}

or, get a 3x3 identity matrix by using,

val mat = identity(3)

2. get value

get the value at position (i, j)

println(mat[i, j])

or, dump the full matrix by using,

print(mat)

3. set value

set the value at position (i, j)

mat[i, j] = 10.0

4. transpose

println(mat.T)

5. inverse

println(mat.I)

6. addition

println(mat + mat2)
println(mat + 2.0)

7. minus

println(mat - mat2)
println(mat - 2.0)

8. element-wise product

println(mat * mat2)
println(mat * 2.0)

9. dot product

println(mat.dot(mat2))

10. element-wise div

println(mat / mat2)
println(mat / 2.0)

11. determinant

println(mat.det())

12. trace

println(mat.trace())

13. adjugate matrix

println(mat.adj())