--- On Fri, 6/2/09, Ana Gabriela Guerrero Serdan wrote:
> I want to do a graph of two kernel local polynomial
> smoothing regressions.
*-------------- begin example -------------
sysuse auto, clear
lpoly price mpg if foreign == 1, ///
nograph gen(sfor) at(mpg) se(sefor)
gen lbfor = sfor - invnormal(.975)*sefor
gen ubfor = sfor + invnormal(.975)*sefor
lpoly price mpg if foreign == 0, ///
nograph gen(sdom) at(mpg) se(sedom)
gen lbdom = sdom - invnormal(.975)*sedom
gen ubdom = sdom + invnormal(.975)*sedom
sort mpg
twoway rarea lbfor ubfor mpg || ///
rarea lbdom ubdom mpg || ///
line sfor mpg || ///
line sdom mpg
*-------------- end example ------------------
(For more on how to use examples I sent to the Statalist, see
http://home.fsw.vu.nl/m.buis/stata/exampleFAQ.html )
Hope this helps,
Maarten
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting address:
Buitenveldertselaan 3 (Metropolitan), room N515
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
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