# WY

The WY function computes the Y-component of the relative rotational velocity of marker I with respect to marker J, as resolved in the coordinate system of marker K. The first argument, marker I, must be specified. The second and third arguments, markers J and K, are optional.

WY(I, J, K)

## Arguments

I
The marker whose velocity is to be computed.
J
The marker with respect to which the velocity is to be computed. If omitted, it defaults to the ground coordinate system.
K
The resultant velocity vector is resolved in the coordinate system of the K marker. If omitted, it defaults to the ground coordinate system.

## Example

<Post_Request
comment          = "bush-vel"
id               = "70000042"
type             = "EXPRESSION"
expr1            = "NULL"
expr2            = "VX(30301010,30301011,30301011)"
expr3            = "VY(30301010,30301011,30301011)"
expr4            = "VZ(30301010,30301011,30301011)"
expr5            = "NULL"
expr6            = "WX(30301010,30301011,30301011)"
expr7            = "WY(30301010,30301011,30301011)"
expr8            = "WZ(30301010,30301011,30301011)"
/>