second y-axis with xtline

[gilles margirier]

Hi everybody,
I have a panel data with four countries and I want to use the xtline graph with the overlay option.
I would like to use the left axis for three countries of my panel and the right axis for the fourth.
Can somebody tell me how to include a second y-axis on the xtline graph, with values corresponding to the fourth country data?
Thank you very much.
Gilles

[eric_a_booth]

Here's an example using the system data census.dta (note the use of axis(2) below) :

sysuse census, clear
set scheme s1mono

*panel here is region, not country
bys region : g time = _n
    *assuming you want a different axis b/c of scaling diff
    replace pop = pop*(runiform()*7) if region ==4
    tabstat pop, by(region) s(min max mean sd)
xtset region time

**
twoway ///
 (connected pop time if region ==1, sort) ///
 (connected pop time if region ==2, sort) ///
 (connected region time if region==3, sort) ///
 (connected pop time if region==4, sort yaxis(2)) , ///
    ytitle(Region 1/3 Pop) ytitle(Region 4 Pop, axis(2)) ///
    ylabel(#4, labsize(vsmall) alternate) ///
    ylabel(#4, labsize(vsmall) alternate axis(2)) ///
    legend(on order(1 "Reg1" 2 "Reg2" 3 "Reg3" 4 "REG4")  r(1))

Produces the attached graph.

[gilles margirier]

Thank you Eric