eraseMode - none

[no-Use]

Hello, 

I try to do animation in Octave and have trouble with animation. 
My aim is to draw objects without deleting/erasing the old drawings (but I
do alter the graphics). My attempt is to set "erasemode" - "none" which
sounds promising but doesn't work. 
However, in the end I do not get several lines plotted but only one at each
step. 

My simple test code:  

val = [1 1 2 2] 
h = line(val(1:2),val(3:4),'linewidth',5,'color','r'); hold on;
axis([-50 50 -50 50])
set(h,'erasemode','none');

for i = 1:10
 val([1,3]) += [1,4];
 val([2 4]) -= [2,1];
 set(h, 'xdata', val(1:2), 'ydata',val(3:4)) 
 pause(1);
 drawnow;
endfor


Thank you for your help :)



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