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| subroutine | frametwist (xp, yp, zp, xv, yv, zv, twist) |
| | Given a principal cartesian orthonormal frame, {xp,yp,zp} (i.e., at P with Earth-centered cartesians, zp), and another similar frame {xv,yv,zv} at V with Earth-centered cartesians zv, find the relative rotation angle, "twist" by which the frame at V is rotated in the counterclockwise sense relative to the parallel-transportation of P's frame to V. More...
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| subroutine | sframetwist (sxp, syp, szp, sxv, syv, szv, stwist) |
| | Given a principal cartesian orthonormal frame, {xp,yp,zp} (i.e., at P with Earth-centered cartesians, zp), and another similar frame {xv,yv,zv} at V with Earth-centered cartesians zv, find the relative rotation angle, "twist" by which the frame at V is rotated in the counterclockwise sense relative to the parallel-transportation of P's frame to V. More...
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Definition at line 46 of file pmat5.f90.
◆ frametwist()
| subroutine pmat5::frametwist::frametwist |
( |
real(dp), dimension(3), intent(in) |
xp, |
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real(dp), dimension(3), intent(in) |
yp, |
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real(dp), dimension(3), intent(in) |
zp, |
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real(dp), dimension(3), intent(in) |
xv, |
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real(dp), dimension(3), intent(in) |
yv, |
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real(dp), dimension(3), intent(in) |
zv, |
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real(dp), intent(out) |
twist |
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) |
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private |
Given a principal cartesian orthonormal frame, {xp,yp,zp} (i.e., at P with Earth-centered cartesians, zp), and another similar frame {xv,yv,zv} at V with Earth-centered cartesians zv, find the relative rotation angle, "twist" by which the frame at V is rotated in the counterclockwise sense relative to the parallel-transportation of P's frame to V.
Note that, by symmetry, transposing P and V leads to the opposite twist. Double precision version.
- Parameters
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| [in] | xp | P-frame cartesian X-vector. |
| [in] | yp | P-frame cartesian Y-vector. |
| [in] | zp | P-frame cartesian Z-vector. |
| [in] | xv | V-frame cartesian X-vector. |
| [in] | yv | V-frame cartesian Y-vector. |
| [in] | zv | V-frame cartesian Z-vector. |
| [out] | twist | relative rotation angle (radians) of frames. |
- Author
- R. J. Purser
Definition at line 778 of file pmat5.f90.
◆ sframetwist()
| subroutine pmat5::frametwist::sframetwist |
( |
real(sp), dimension(3), intent(in) |
sxp, |
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real(sp), dimension(3), intent(in) |
syp, |
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real(sp), dimension(3), intent(in) |
szp, |
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real(sp), dimension(3), intent(in) |
sxv, |
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real(sp), dimension(3), intent(in) |
syv, |
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real(sp), dimension(3), intent(in) |
szv, |
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real(sp), intent(out) |
stwist |
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) |
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private |
Given a principal cartesian orthonormal frame, {xp,yp,zp} (i.e., at P with Earth-centered cartesians, zp), and another similar frame {xv,yv,zv} at V with Earth-centered cartesians zv, find the relative rotation angle, "twist" by which the frame at V is rotated in the counterclockwise sense relative to the parallel-transportation of P's frame to V.
Note that, by symmetry, transposing P and V leads to the opposite twist. Single precision version.
- Parameters
-
| [in] | sxp | P-frame cartesian X-vector. |
| [in] | syp | P-frame cartesian Y-vector. |
| [in] | szp | P-frame cartesian Z-vector. |
| [in] | sxv | V-frame cartesian X-vector. |
| [in] | syv | V-frame cartesian Y-vector. |
| [in] | szv | V-frame cartesian Z-vector. |
| [out] | stwist | relative rotation angle (radians) of frames. |
- Author
- R. J. Purser
Definition at line 751 of file pmat5.f90.
The documentation for this interface was generated from the following file:
- /scratch1/NCEPDEV/da/George.Gayno/ufs_utils.git/UFS_UTILS/sorc/grid_tools.fd/regional_esg_grid.fd/pmat5.f90
1.8.14