func NewMatrix(row, col int) Matrix {
m := make([]vector.Vector, col)
for i, _ := range m {
m[i] = vector.NewVector(row)
}
return m
}
// return row 'row' in matrix, row starts from 1,
// NOTE: the returned vector is a new vector, not a reference to the vector in matrix
func (m Matrix) Row(row int) vector.Vector {
if row > 0 && row <= m.Rows() {
v := vector.NewVector(m.Cols())
for i := 1; i <= m.Cols(); i++ {
v.Set(i, m.Column(i).Get(row))
}
return v
}
return nil
}
func TestNewMatrix(t *testing.T) {
m := NewMatrix(3, 3)
m.Init(vector.NewVector(3, 1, 2, 3), vector.NewVector(3, 4, 5, 6), vector.NewVector(3, 7, 8, 9))
t.Log(m)
}
func init() {
m1.Init(vector.NewVector(3, 1, 2, 3), vector.NewVector(3, 4, 5, 6), vector.NewVector(3, 7, 8, 9))
m2.Init(vector.NewVector(3, 7, 8, 9), vector.NewVector(3, 4, 5, 6), vector.NewVector(3, 1, 2, 3))
}
func NewVector4(x, y, z, w float64) *Vector4 {
return &Vector4{vector.NewVector(4, x, y, z, w)}
}
func NewVector3(x, y, z float64) *Vector3 {
return &Vector3{vector.NewVector(3, x, y, z)}
}