function xy=mmgetxy(n)%MMGETXY Graphical Input Using Mouse.% XY=MMGETXY(N) gets N points from the current axes at% points selected with a mouse button press.% XY=[x,y] matrix having 2 columns and N rows.% Striking ANY key on the keyboard aborts the process.% XY=MMGETXY gathers any number of points until a% key on the keyboard is pressed.% D.C. Hanselman, University of Maine, Orono, ME, 04469% 3/30/95% Copyright (c) 1996 by Prentice-Hall, Inc.if nargin==0,n=1000;end % nobody wants more points!xy=[];for i=1:n	tmp=mmcxy;	if isempty(tmp)		return	else		xy=[xy;tmp];	endend