qspec.boost  (  x ,  v ,  axis = -1  )[source]

Parameters:

xarray_like

The 4-vector x in the current rest frame (arb. units).

varray_like

The velocity 3-vector (m/s).

axisNone

The axis along which the vector components are aligned.

Returns:

outarray_like

The 4-vector x in the coordinate system moving with velocity v relative to the current rest frame ([x]).

Raises:

ValueError

x and v must have 4 and 3 components along the specified axis, respectively. The shapes of x and v must be compatible.