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| Subject: | XploRe: Learning Guide |
| See XploRe: |
| Quantlet: | smoo12 | |
| Description: | Computes and plots a local linear regression together with a derivative estimate and the data. | |
| Download: | smoo12.xpl |
library("smoother")
library("plot")
setsize(640,480)
;
motcyc=read("motcyc")
hh=lpregrot(motcyc) ; rule-of-thumb bandwidth
hd=lpderrot(motcyc) ; rule-of-thumb bandwidth
mh=lpregest(motcyc,hh) ; local linear regression
md=lpderest(motcyc,hd) ; local quadratic derivative
mh=setmask(mh,"line","black")
md=setmask(md,"line","blue","dashed")
xy=setmask(motcyc,"cross","small","red")
plot(xy,mh,md)
setgopt(plotdisplay,1,1,"title","Local Polynomial Estimation")
| Subject: | XploRe: Learning Guide |
| See XploRe: |