[R] equation of a line or curve

Peter Dalgaard P.Dalgaard at biostat.ku.dk
Tue Nov 25 11:19:26 CET 2008


Uwe Ligges wrote:
> 
> 
> CE.KA wrote:
>> Hi R users
>> I used the function line(x,y) and line(lowess(x,y)) to see the
>> correlation
>> between 2 variables (x,y).
>> Here is my question:
>> is there a way to ask R to tell me the equation of
>> -this line : line(x,y)
> 
> The equation if line(x,y)? It is given by the n data points directly and
> consists of n-1 separate linear parts.

line() not lines()...

> line(cars)

Call:
line(cars)

Coefficients:
[1]  -26.053    4.421


I'm a bit confused as to how you can avoid finding the equation of the
line from that output!

-- 
   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
 (*) \(*) -- University of Copenhagen   Denmark      Ph:  (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)              FAX: (+45) 35327907



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