overlaying graphs on 2 different scales

[Hannah Jackson]

G'Day Stata Users!

I have a question on how I should approach this conundrum.
I am graphing 2 data sets on one graph (overlaying each other) and the problem is a problem of scale. One data set are too small compared to the NHANES . What should my approach be? use a secondary axis? reduce both to a common scal, both axes? Here is a sample of the code I am using :


twoway (histogram bmi if bmi<38.0 & ageyears>20 & gender==0 , color(gray) freq)(histogram bmxbmi if bmxbmi<38.0 & ridageyr>20 & riagendr==2, fcolor(none) lcolor(black) freq ), legend(order(1 "FORWARD" 2 "NHANES" ))

[Roman Mostazir]

G'Day Stata Users!

I am graphing 2 data sets on one graph (overlaying each other) and the problem is a problem of scale. One data set are too small compared to the NHANES .

Size of dataset does not determine the variation in scales. Please read the FAQ section on how to make meaningful posts for a better reply. You are expected to learn to use code delimiters for providing Stata codes, use of -dataex- to provide sample data examples.

[Hannah Jackson]

understood. please feel free to remove post.