For the bivariate case:
g <- function(b,x,y)
(abs(y - b[1] - b[2] * x))/sqrt(1 + crossprod(b))
url: www.econ.uiuc.edu/~roger Roger Koenker
email rkoen...@uiuc.edu Department of Economics
vox: 217-333-4558 University of Illinois
fax: 217-244-6678 Champaign, IL 61820
On Feb 20, 2009, at 11:12 AM, GAF wrote:
Hi there,
I am trying to measure orthogonal/perpendicular distances from
regression
lines (i.e. the shortest distance from a given point to my
regression line).
As it sounds rather easy (basically just an orthogonal/perpendicular
residual) I hoped that there was some function in R that can do
that. All
efforts so far remained unsuccessful, however.
Does anybody know?
Thnx and cheers,
Philipp
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