Miten paikkavektori määritellään?
In geometry, a position or position vector, also known as location vector or radius vector, is a Euclidean vector that represents the position of a point "P" in space in relation to an arbitrary reference origin "O". Usually denoted x, r, or s, it corresponds to the straight line segment from "O" to "P".
In other words, it is the displacement or translation that maps the origin to "P":
Euclidean vector that represents the position of a point "P" in space in relation to an arbitrary reference origin "O"