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RE: st: adding info to bar graph


From   "Buzz Burhans" <buzzb3@verizon.net>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: adding info to bar graph
Date   Wed, 09 Apr 2008 14:38:22 -0400

Nick,

Thanks for your explanation.  I feel a bit better that I was not alone in
missing how the "5" functioned.  You were right that I didn't quite see how
the recursive use of the macro was being used, as I noted to Scott.

Thanks

Buzz

Buzz Burhans, Ph.D.

Dairy-Tech Group

Twin Falls, ID
Phone: 208-320-0829
Fax: 208-735-1289 

So. Albany VT
Phone: 802-755-6842

Email: buzzb3@verizon.net

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Nick Cox
Sent: Wednesday, April 09, 2008 1:35 PM
To: statalist@hsphsun2.harvard.edu
Subject: RE: st: adding info to bar graph

"5" looks like a typo: delete it. Otherwise the important idea is that
each time around the loop
you append a level and the text for that level, here a ratio spelled out
as numerator/denominator. 

In general, 

local macname `macname' <stuff> 

appends <stuff> to local macro macname. 

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

Buzz Burhans

Scott, 
I liked your solution for Rich's question; could you help me follow what
it
does with the local macro mytext?  I am having a hard time following how
Stata parses and processes this line of your program in the loop:

local mytext "`mytext' 5 `l'   "`n'/`d'"  "



Buzz Burhans, Ph.D.

statalist@hsphsun2.harvard.edu] On Behalf Of Scott Merryman
Sent: Wednesday, April 09, 2008 11:01 AM
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: adding info to bar graph

Something like this?

sysuse auto,clear
levelsof rep, local(levels)
foreach l of local levels {
	qui count  if fore == 1 & rep == `l'
	local n = r(N)
	qui count if  rep == `l'
	local d = r(N)
	local mytext "`mytext' 5 `l'   "`n'/`d'"  "
}
egen percent = mean(100 * foreign), by(rep78)
egen total = sum(1), by(rep78)

twoway bar percent rep78,barw(0.5) text(`mytext', box bc(white)  )
ylabel(,angle(h)) ytitle(Percent Foreign)


On Wed, Apr 9, 2008 at 7:02 AM, Richard Goldstein
<richgold@ix.netcom.com> wrote:
> I want to produce a bar graph where the numeric variable is a 0/1
variable
> (so the means are proportions) over a grouping variable -- that part
is
> easy.  I would like to automatically add, either as a bar label or
under
the
> group id (e.g., the "5", etc. if I typed -graph bar foreign,
over(rep78)-
> for the auto data), the numerator and denominator for this proportion
(mean)
> -- is there a way to do that?
>
> Note that I do know that I can do this with graph edit; however, I
need to
> produce dozens of these graphs so I want an automatic way to do it.
>

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