arrowflow

 Usage:
                  arrowflow(x,y,sx,sy,r);

 Input:
                  x,y : initial position coordinates
                    default is 0,0
                  sx,sy : scaling of arrows along x and y coordinates
                    as a percentage of axis length, e.g. 10%
                    default is 10,10
                  r : angle of rotation
                    r=1 --> East-North
                    r=2 --> North-West
                    r=3 --> West-South
                    r=4 --> South-East
                    default is 1

 Output:
                  h : handles of plot of the arrows
 Example:
                  figure;
                  plot(0:0,1:1);
                  plot(0:1,1:0);
                  arrowflow(1/3,2/3,0,0,1);
                  arrowflow(2/3,2/3,0,0,3);

 Issues:
                  To keep arrows of same length requires:axis square;

The author wishes to acknowledge the following in the creation of this submission:
arrow.m