-- vector modified

src/de/tud/kom/p2psim/impl/topology/util/PositionVector.java

@@ -307,11 +307,13 @@ public class PositionVector implements Location {
 	 * Multiply this vector with a scalar value
 	 * 
 	 * @param multi
+	 * @return the vector
 	 */
-	public void multiplyScalar(double multi) {
+	public PositionVector multiplyScalar(double multi) {
 		for (int i = 0; i < dimensions; i++) {
 			setEntry(i, multi * getEntry(i));
 		}
+		return this;
 	}
 
 	/**