How to retain a line on axes when plotting new line in MATLAB GUI?

I have 3 axes in my GUI. I have plotted a line on each of them using line(). Again I want to plot new set of line, retaining the previous lines. But as I am using line() again, it overwrites the previous lines. So, is there a way to retain the older lines while plotting new?

Answer 1

[Mehmed Saad]

I know one method, maybe it is not the best but it worked for me

figure;
plot(1:100,'b.','LineWidth',20);hold on
imshow('cameraman.tif');hold on
plot(120:150,'r-','LineWidth',20);

Now i change the position of childrens in gca which will change the layer position

y = gca;
tmp_c = (y.Children);
order = [3 1 2];
y.Children = tmp_c(order);