how to create scatter and histogram plots in the same graph?

I want to combine scatter and histogram plots in the same graph. I also do not want to show the histogram data in the y axis, and only show the scatter data. please see the attached figure. For instance, I want to combine the following plots:

scatter (x1, y, x2, y)

hist (z)

I appreciate any suggestions. Thanks in advance.

Answer 1

[Basil C.]

Did you try the command

hold on;

[Maryam Hamrahi]

Thanks for your respond. It does not work in this case.