movect.F90 File Reference

Move a vector along a great circle. More...

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Functions/Subroutines
subroutine	movect (FLAT, FLON, TLAT, TLON, CROT, SROT)
	This subprogram provides the rotation parameters to move a vector along a great circle from one position to another while conserving its orientation with respect to the great circle. More...

Detailed Description

Move a vector along a great circle.

Author

Iredell

Date

96-04-10

Definition in file movect.F90.

Function/Subroutine Documentation

movect()

subroutine movect	(	real, intent(in)	FLAT,
		real, intent(in)	FLON,
		real, intent(in)	TLAT,
		real, intent(in)	TLON,
		real, intent(out)	CROT,
		real, intent(out)	SROT
	)

This subprogram provides the rotation parameters to move a vector along a great circle from one position to another while conserving its orientation with respect to the great circle.

These rotation parameters are useful for vector interpolation.

Program History Log

Date	Programmer	Comments
96-04-10	Iredell	Initial
1999-04-08	Iredell	generalize precision

Parameters

[in]	flat	real latitude in degrees from which to move the vector.
[in]	flon	real longitude in degrees from which to move the vector.
[in]	tlat	real latitude in degrees to which to move the vector.
[in]	tlon	real longitude in degrees to which to move the vector.
[out]	crot	real clockwise vector rotation cosine.
[out]	srot	real clockwise vector rotation sine. (uto=crot*ufrom-srot*vfrom; vto=srot*ufrom+crot*vfrom)

Author

Iredell

Date

96-04-10

Definition at line 25 of file movect.F90.

Referenced by bicubic_interp_mod::interpolate_bicubic::interpolate_bicubic_vector(), bilinear_interp_mod::interpolate_bilinear::interpolate_bilinear_vector(), budget_interp_mod::interpolate_budget::interpolate_budget_vector(), neighbor_budget_interp_mod::interpolate_neighbor_budget::interpolate_neighbor_budget_vector(), and neighbor_interp_mod::interpolate_neighbor::interpolate_neighbor_vector().