refreshdata over a plot handle ?

[bob]

Hi,

I am trying to do this:

scatter(dataPts(:,1),dataPts(:,2));

hold on;

plot(0,0,'xDataSource','curveFitPts(:,1)','yDataSource','curveFitPts(:,2)');

hold off;

# later in a loop..

refreshdata(gcf(),'caller');

drawnow;

But the problem is, calling refreshdata over the figure handle removes the earlier scatter plot also.

I guess if there would be a way to simply do a refreshdata over a plot handle rather than the entire figure would keep the scatter plot permanently. Any body know how to do that ?

--
bob