qspec.analyze.straight_direction  (  p_0 ,  p_1 ,  axis = -1  )[source]

The normalized directional vector of a straight through two points $$\vec{r} = \frac{\vec{p}_1 - \vec{p}_0}{|\vec{p}_1 - \vec{p}_0|}.$$

Parameters:

p_0ndarray | Iterable

The first point(s) $\vec{p}_0$.

p_1ndarray | Iterable

The second point(s) $\vec{p}_1$.

axisint

The axis along which the vector components are aligned.

Returns:

rndarray

The direction $\vec{r}$ of a straight line.