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Re: st: maybestupid


From   "Neil Shephard" <mdeasnds@fs1.ser.man.ac.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: maybestupid
Date   Wed, 03 Mar 2004 14:10:30 +0000

> Now I know why I posted this "stupid" question  :
> 
> 1)
>  -qui sum var1
>  -scalar s = r(sum)
> works as well as :
> 2)
>  - qui summ var1
>  - scalar s = r(sum)
> 
> I know about qui and summ(arize),
> but why does delineation 1) work as well ?????? /same results
> I am a little bit confused !

In the same vein...

qui su var1
scalar s = r(sum)

would also work, the point I think you've missed is to do with the abbreviation of 
commands.

All three examples are 'expanded' by Stata to read

quietly summarize var1
scalar s = r(sum)

The key is to look at the letters in the syntax diagram for the command you are using 
which are underlined (see man -summarize-).  These indicate the minimum 
abbreviation of the command name that is allowed.  Thus the man page for -describe- 
underlines just d (formatting ommited to avoid enriching the text) so....

d
de
des
desc
descr
descri
describ
describe

are all the same to Stata in the same way as -sum- and  -summ- invoke the same 
command (i.e. -summarize-)

HTH's

Neil
Neil Shephard
Genetics Statistician
ARC Epidemiology Unit, University of Manchester
neil.shephard@man.ac.uk
neil.shephard@mindless.com

"Contrariwise, if it was so, it might be; and if it
were so it would be; but as it isn't, it ain't. That's
logic" - Tweedledee (Alice Through the Looking Glass)

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