Bar plot with two X axes

Can someone help me in providing a sample program of a bar plot with two X axes? Thanks in advance!

Answer 1

[Walter Roberson]

plotxx( x1, y1, x2, y2, @bar,@bar)

[Hari]

Thanks a lot! but when I run, I get the following error "Undefined function or variable 'plotxx'"

Update: I think I have to download the plotxx.m file.