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st: RE: mrunning size


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: mrunning size
Date   Wed, 19 Oct 2005 17:26:01 +0100

Glad you like the command, but sorry, but from this 
direction comes no light whatsoever. 

I am not even clear on why you are sure that 
the problem lies with -mrunning-. -mrunning- 
as far as graphics is concerned is just a wrapper 
for various standard calls and does nothing
whatsoever at a low level. Likewise what you 
do downstream with the graph produced is beyond 
our ken. 

In general I have found that unless graphs 
are equivalent in content and style -graph combine- will
not always do what you hope it will. I think 
the problem lies in -graph combine- being half stupid and half 
intelligent about what the component graphs are. 

Vince Wiggins will no doubt be able to say something 
less stupid and more intelligent. 

Nick 
n.j.cox@durham.ac.uk 

Fred Wolfe
 
> I have been using the Royston and Cox -mrunning, Stata 9.1, 
> windows xp, a 
> very helpful addition to Stata.
> 
> I made a graph using this code:
> 
> use cl_anemia_ra1, clear
> set seed 239
> getran whoanem sex age
> mrunning whoanem age if ruse,adj(sex) ci yline(.3152 ) nopt 
> ylabel(0[.1].7) 
> ///
> xtitle("Age (years)") ///
> ylab(0 "0%" .1 "10%"  .2 "20%" .3 "30%" .4 "40%" .5 "50%" .6 
> "60%" .7 "70%" 
> .8 "80%" .9 "90%" 1 "100%", ///
> angle(0)) title(The effect of age on anemia prevalence in RA) ///
> scheme(s2mono) clwidth(medthick) clpattern(solid dot dot) ///
> combine(saving(ageprevanem,replace))
> graph export ageprevanem.wmf,replace
> 
> When I combined this graph with another using the following code:
> 
> graph combine age.gph ageprevanem.gph, altshrink
> 
> I noticed the graph from -mrunning was physically smaller, 
> such that the 
> two graphs from the immediately above command were not of 
> equal size. I 
> combined other graphs and was able to determine the problem was with 
> -mrunning-. I wonder if Nick Cox might shed some light on this?
> 

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