Only the components of the vectors are displayed numerically. Numbers for the magnitude and direction of each would also be useful. It would also be useful to have a way to input vectors numerically rather than graphically. Also, placement of the chart obscures portions of the vectors if they have larger magnitudes and point into the first quadrant. Similarly for other directions, it is easy to choose larger magnitudes that won?t display the vectors entire length.
The applet's inflexibility limits its usefulness.