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Re: st: plot using -stphtest- answer and new puzzle


From   Nishant Dass <nishant_dass@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: plot using -stphtest- answer and new puzzle
Date   Mon, 9 Oct 2006 00:41:10 -0700 (PDT)

Hi Maarten,

I went about the simple (and brute-force) way by creating a
new variable equal to my earlier variable but with
"clearer" name and just recreated my graph.  So it worked
for the time being but the -twoway- wasn't working.  It
must be some error on my part because I haven't used
-twoway- before.  

Anyway, thanks a lot for your suggestions.  At least it's
useful to know that -twoway- can work with these plots too.

Nishant 


--- Maarten buis <maartenbuis@yahoo.co.uk> wrote:

> Nishant:
> If you are using Stata 9, than -stphtest- is out of date
> and you can
> better use -estat phtest-, but that does not answer your
> question. 
> 
> You can pile up almost any options you can use after
> -twoway- after 
> -estat phtest, plot(varname)- (or -stphtest,
> plot(varname)-). In your
> case you want to change the title on the y-axis, so you
> can add
> ytitle("whatever"). This is illustrated in the example
> below.
> 
> As I understand it, the plot option just shows a scatter
> plot of scaled
> Schoenfeld residuals against time with a lowess smooth
> fitted through
> it. If I do that by hand my lowess smooth is a lot
> smoother than the
> result from -estat phtest-, but the footnote indicates
> that the same
> bandwidth is used. Does anybody have any ideas?
> HTH,
> Maarten
> 
> *---------- begin example --------
> sysuse cancer, clear
> stset studytime, failure(died)
> xi: stcox i.drug age, schoenfeld(sch*) scaledsch(sc*)
> lowess sc3 _t, ytitle("scaled Schoenfeld - age at
> interview") name(a)
> stphtest, plot(age) ytitle("scaled Schoenfeld - age at
> interview")
> estat phtest, plot(age) ytitle("scaled Schoenfeld - age
> at interview")
> *---------- end example ----------
> 
> --- Nishant Dass <nishant_dass@yahoo.com> wrote:
> > Could anyone tell me how I could change the titles
> along
> > axes of my plot of scaled Schoenfeld residuals?  
> > 
> > I am using "stphtest, plot(myvar)" to get the plot and
> by
> > default, the plot shoes the variable name "myvar" along
> the
> > y-axis while I would to display the label instead.  
> 
> 
> 
> -----------------------------------------
> Maarten L. Buis
> Department of Social Research Methodology
> Vrije Universiteit Amsterdam
> Boelelaan 1081
> 1081 HV Amsterdam
> The Netherlands
> 
> visiting adress:
> Buitenveldertselaan 3 (Metropolitan), room Z434
> 
> +31 20 5986715
> 
> http://home.fsw.vu.nl/m.buis/
> -----------------------------------------
> 
> 
> 		
>
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