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: U! E, z' C0 A, Zfunction test_mouse_track() 
2 d& R7 w( w: l" y/ k% ifigure; 
4 k; p$ O  L7 S4 O! Z! ]( Y9 Eaxis([-10,10,0,5]); 
! f2 [' i, H7 u5 W0 vmyfile = fullfile(tempdir,'position.mat');" l2 Q; V9 f0 J9 p1 C' A 
set(gcf,'WindowButtonDownFcn',@ButttonDownFcn);# y- {4 w/ i  K! G$ L7 M" D 
 
% g1 c  e2 c7 m/ Q; k4 t" M8 k+ t5 y5 x9 S4 c9 j! f; B9 N 
% 回调函数0 A/ t( `! _& |3 M& r) ` 
function ButttonDownFcn(src,event) 
  ^8 q7 ~( n& `2 g# k. opt = get(gca,'CurrentPoint'); 
% z6 G% C( P& G, k/ T. mx = pt(1,1);, f: ~, @1 C% s 
y = pt(1,2); 
& d' B8 J" C9 }9 Csave('position.mat','pt','-ascii','-append'); 
$ P. c1 Z! I0 [. a+ ^( Rfprintf('x=%f,y=%f\n',x,y);4 |( E% L4 a: Y5 U3 c 
 
/ h% A! ^$ F3 E. V) }6 O产生的position.mat文件中就是坐标点数据。 |   
 
 
 
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