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Re: st: finding the max of a variable and then using it

From   Neil Shephard <>
Subject   Re: st: finding the max of a variable and then using it
Date   Tue, 10 Aug 2010 14:47:21 +0000

On Tue, Aug 10, 2010 at 2:43 PM, Data Analytics Corp.
<> wrote:
> Hi,
> I have a data set with a variable called opp_price.  I'd like to find the
> maximum value for opp_price (I would imagine I'd use
> egen opp = max(opp_price)
> or something like this, but then use this single value in subsequent
> graphing statements like the following:
> xline(opp, lwidth(thin))
> text(0.0 238 "OPP: $opp", place(w))

Well as you've clocled the above doesn't set opp_price as a global
macro, which is how you are trying to refer to it in your graph call.
And as you write you need to use a scalar, and the key is to save it
in a local macro

qui sum opp
local max_opp = r(max)
 xline(opp, lwidth(thin)) \\
 text(0.0 238 "OPP: `max_opp'", place(w))

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