Subject: | XploRe Application Guide |
See XploRe: |
Quantlet: | ls01 | |
Description: | estimation of phonecal data set by OLS | |
Download: | ls01.xpl |
library("metrics") ; z = read("phonecal") ; x = matrix(rows(z))~z[,2] y = z[,3] ; b = gls(x,y) ; ; create graphical display and draw data points and regressions line ; d = createdisplay(1,1) data = x[,2]~y ; data points ; yhat = x * b line = x[,2]~yhat ; estimated regression line setmaskp(line, 0, 0, 0) setmaskl(line, (1:rows(line))', 4, 1, 3) ; ; display all objects ; show(d, 1, 1, data, line) setgopt(d, 1, 1, "title", "Least squares regression with outliers")
Subject: | XploRe Application Guide |
See XploRe: |