ciplot, two plots in same graph

[Lillian Ovedal Myrtveit]

Dear all,

I have used ciplot to look at the point estimates and confidence intervals. The code I have used is as follows:

ciplot Y if Intervention==1, by(month)  ///
name(name1)

ciplot Yif Intervention==0, by(month) ///
name(name2)

graph combine name1 name2

This produces two figures next to each other. I would like to have to the plots in the same figure. Is this possible?

What I essentially want, is to plot the mean and confidence interval on three different points in time for two groups; if there is another code that works better, any tip would be appreciated.

Best,
Lillian Myrtveit

[Nick Cox]

ciplot is from SSC, as you are asked to explain (FAQ Advice #12).

The help says this

(note added August 2011)

For fuller flexibility, consider using statsby first and then standard graphics commands (Cox 2010).

Cox, N.J. 2010. Speaking Stata: The statsby strategy. Stata Journal 10: 143-151.

and I can only endorse that advice you should have already read.


FAQ Advice #12 also asks for a data example, but you don't give one. Failing that, here is something you can run.

sysuse auto, clear 

gen rep782 = inlist(rep78, 4, 5) 
label def rep782 0 "{&le} 3"  1 "4 or 5"
label val rep782 rep782 
local ytitle : var label mpg 

statsby , by(foreign rep782) clear: ci means mpg 

list 

twoway rspike lb ub foreign, by(rep782, legend(off) note("") subtitle(Repair record)) ///
|| scatter mean foreign , xla(0 1, val) ytitle("`ytitle'") xsc(r(-0.2 1.2)) yla(, ang(h))

Flexibility means, among many other choices, freedom to use rcap rather than rspike..