[TowerTalk] NEC rotate wire

[Dan Maguire]

Jim Lux wrote:
>>> In 4nec2, you can do a
>>> SY L = 10               ' length
>>> SY ANG = 0              ' direction
>>> GW {stuff} L*COS(ANG), L*SIN(ANG),H,Radius

Here's a nice explanation (first answer) of how to transpose x/y
coordinates by counterclockwise rotation angle theta, where the center
of rotation can be any arbitrary point in the x/y plane:

https://math.stackexchange.com/questions/270194/how-to-find-the-vertices-angle-after-rotation

Dan, AC6LA