[R] orthogonal/perpendicular distance from regression line

[roger koenker]

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    rkoenker at 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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