Re: st: sts graph: customizing -legend- option of -sts graph-

[Michael McCulloch <mm@pinest.org>]

Thank you Maarten, for two very efficient and reliable, solutions.


> --- Michael McCulloch <mm@pinest.org> wrote:
> >  I've created a KM plot comparing two troups, and have used the
> >  -legend- option. Note in the 1st graph example that they're labeled
> >  1, 2, and 3.
> >
> >  Also note that in the second example, after dropping "drug 2", that
> >  even though 1 and 3 are left, they're labelled 1 and 2. If I've
> >  dropped 2, I'd like to see the labels say 1 and 3! Is there a way to
> >  do this?
> >
> >  sysuse cancer.dta, clear
> >  stset studytime
> >  * graph 1
> >  sts graph, by(drug) atrisk legend(label(1 "drug 1") label(2 "drug 2")
> >
> >  label(3 "drug 3")) ///
> >  drop if drug==2
> >  * graph 2
> >  sts graph, by(drug) atrisk legend(label(1 "drug 1") label(2 "drug 2")
> >  label(3 "drug 3")) ///
> -label()- referes to first, second, and third line in your graph, not
> to the value 1, 2, and 3 in the variable drug. This is necessary given
> that the syntax of -legend- is designed to handle much more complex
> graphs. There are two ways of doing what you want:
>
> 1) Say to Stata that the first line represents drug 1 and and second
> line drug 3:
>
> *----------- begin example ---------------
> sysuse cancer.dta, clear
> stset studytime, failure(died)
> drop if drug == 2
> sts graph, by(drug) atrisk ///
>      legend(label(1 "drug 1") ///
>             label(2 "drug 3")) 
> *------------ end example ----------------
> (For more on how to use examples I sent to the Statalist, see
> http://home.fsw.vu.nl/m.buis/stata/exampleFAQ.html )
>
> 2) Assign labels to the values of the variable drug:
>
> *----------- begin example -----------
> sysuse cancer.dta, clear
> stset studytime, failure(died)
> drop if drug == 2
> label define drug 1 "drug 1" 2 "drug 2" 3 "drug 3"
> label value drug drug
> sts graph, by(drug) atrisk
> *------------ end example ------------
> (For more on how to use examples I sent to the Statalist, see
> http://home.fsw.vu.nl/m.buis/stata/exampleFAQ.html )
>
> Hope this helps,
> Maarten
>
>
> -----------------------------------------
> Maarten L. Buis
> Department of Social Research Methodology
> Vrije Universiteit Amsterdam
> Boelelaan 1081
> 1081 HV Amsterdam
> The Netherlands
>
> visiting address:
> Buitenveldertselaan 3 (Metropolitan), room N515
>
> +31 20 5986715
>
> http://home.fsw.vu.nl/m.buis/
> -----------------------------------------
>
>
>      
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