st: how to do fractile plot in STATA

[tang5@purdue.edu]

Dear all,

I want a fractile plot over two variables. I would like to see my primary 
variable on Y-axis and fractile on the X-axis, and a line in the graph to fit 
a kernel density function line representing the bivariate relationship between 
Y and my other variable.
Clear enough?
thanks a lot for help,
Min
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