mom_array_transform::rotate_vector Interface Reference

Detailed Description

Rotate an array pair representing the components of a vector. Rotation is applied across the first and second axes of the array. This rotation should be applied when the fields satisfy vector transformation rules. For example, the u and v components of a velocity will map from one to the other for quarter turns, with a sign change in one component. A half turn will map elements onto themselves with sign changes in both components.

Definition at line 55 of file MOM_array_transform.F90.

Private functions
subroutine	rotate_vector_real_2d (A_in, B_in, turns, A, B)
	Rotate the elements of a 2d real vector along first and second axes. More...
subroutine	rotate_vector_real_3d (A_in, B_in, turns, A, B)
	Rotate the elements of a 3d real vector along first and second axes. More...
subroutine	rotate_vector_real_4d (A_in, B_in, turns, A, B)
	Rotate the elements of a 4d real vector along first and second axes. More...

Detailed Description

Rotate an array pair representing the components of a vector. Rotation is applied across the first and second axes of the array. This rotation should be applied when the fields satisfy vector transformation rules. For example, the u and v components of a velocity will map from one to the other for quarter turns, with a sign change in one component. A half turn will map elements onto themselves with sign changes in both components.

Definition at line 55 of file MOM_array_transform.F90.

Functions and subroutines

rotate_vector_real_2d()

subroutine mom_array_transform::rotate_vector::rotate_vector_real_2d ( real, dimension(:,:), intent(in)  A_in, real, dimension(:,:), intent(in)  B_in, integer, intent(in)  turns, real, dimension(:,:), intent(out)  A, real, dimension(:,:), intent(out)  B  )

private

Rotate the elements of a 2d real vector along first and second axes.

Parameters

[in]	a_in	First component of unrotated vector
[in]	b_in	Second component of unrotated vector
[in]	turns	Number of quarter turns
[out]	a	First component of rotated vector
[out]	b	Second component of unrotated vector

Definition at line 230 of file MOM_array_transform.F90.

  real, intent(in) :: A_in(:,:) !< First component of unrotated vector
  real, intent(in) :: B_in(:,:) !< Second component of unrotated vector
  integer, intent(in) :: turns  !< Number of quarter turns
  real, intent(out) :: A(:,:)   !< First component of rotated vector
  real, intent(out) :: B(:,:)   !< Second component of unrotated vector
 
  call rotate_array_pair(a_in, b_in, turns, a, b)
 
  if (modulo(turns, 4) == 1 .or. modulo(turns, 4) == 2) &
    a(:,:) = -a(:,:)
 
  if (modulo(turns, 4) == 2 .or. modulo(turns, 4) == 3) &
    b(:,:) = -b(:,:)

rotate_vector_real_3d()

subroutine mom_array_transform::rotate_vector::rotate_vector_real_3d ( real, dimension(:,:,:), intent(in)  A_in, real, dimension(:,:,:), intent(in)  B_in, integer, intent(in)  turns, real, dimension(:,:,:), intent(out)  A, real, dimension(:,:,:), intent(out)  B  )

private

Rotate the elements of a 3d real vector along first and second axes.

Parameters

[in]	a_in	First component of unrotated vector
[in]	b_in	Second component of unrotated vector
[in]	turns	Number of quarter turns
[out]	a	First component of rotated vector
[out]	b	Second component of unrotated vector

Definition at line 248 of file MOM_array_transform.F90.

  real, intent(in) :: A_in(:,:,:) !< First component of unrotated vector
  real, intent(in) :: B_in(:,:,:) !< Second component of unrotated vector
  integer, intent(in) :: turns    !< Number of quarter turns
  real, intent(out) :: A(:,:,:)   !< First component of rotated vector
  real, intent(out) :: B(:,:,:)   !< Second component of unrotated vector
 
  integer :: k
 
  do k = 1, size(a_in, 3)
    call rotate_vector(a_in(:,:,k), b_in(:,:,k), turns, a(:,:,k), b(:,:,k))
  enddo

rotate_vector_real_4d()

subroutine mom_array_transform::rotate_vector::rotate_vector_real_4d ( real, dimension(:,:,:,:), intent(in)  A_in, real, dimension(:,:,:,:), intent(in)  B_in, integer, intent(in)  turns, real, dimension(:,:,:,:), intent(out)  A, real, dimension(:,:,:,:), intent(out)  B  )

private

Rotate the elements of a 4d real vector along first and second axes.

Parameters

[in]	a_in	First component of unrotated vector
[in]	b_in	Second component of unrotated vector
[in]	turns	Number of quarter turns
[out]	a	First component of rotated vector
[out]	b	Second component of unrotated vector

Definition at line 264 of file MOM_array_transform.F90.

  real, intent(in) :: A_in(:,:,:,:) !< First component of unrotated vector
  real, intent(in) :: B_in(:,:,:,:) !< Second component of unrotated vector
  integer, intent(in) :: turns      !< Number of quarter turns
  real, intent(out) :: A(:,:,:,:)   !< First component of rotated vector
  real, intent(out) :: B(:,:,:,:)   !< Second component of unrotated vector
 
  integer :: n
 
  do n = 1, size(a_in, 4)
    call rotate_vector(a_in(:,:,:,n), b_in(:,:,:,n), turns, &
        a(:,:,:,n), b(:,:,:,n))
  enddo

---

The documentation for this interface was generated from the following file:

• /home/cermak/src/MOM6.devrob/src/framework/MOM_array_transform.F90