--- Maarten buis wrote:
> > An intermediate solution that will get the small graph
> > while keeping the data intact is:
> >
> > . bys yearofbirth (wage): gen byte first = _n == 1
> > . egen meanwage = mean(wage), by(yearofbirth)
> > . scatter meanwage yearofbirth if first
--- Nick Cox wrote:
> Maarten's solution is good, but there is no need for the
> sorting within -yearofbirth-
This is correct. My solution came directly from my default
library of tricks. In a general case this will make sure
that first will tag an observation that has a valid
(non-missing) value on whatever I am sorting on, in this
case wage, unless all values of wage are missing within a
category of yearofbirth. This is not relevant in this
case as meanwage will always contain valid values.
-- Maarten
--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany
http://www.maartenbuis.nl
--------------------------
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