[R] Problems using "lm" in combination with "predict"

["Maja Schröter"]

Hi, 

I am sorry


I meant:


  mod <- lm(y~Worktime+Vacation+Illnes+Bankholidays)
   
  newdate=data.frame(x=c(324,123,0.9,0.1))
  predict(mod,newdate)

And get this error.

Yours,

Maja




-------- Original-Nachricht --------
Datum: Sat, 4 Aug 2007 04:42:14 -0700 (PDT)
Von: Stephen Tucker <brown_emu at yahoo.com>
An: "Maja \\"Schröter\\"" <maja.schroeter at gmx.de>, r-help at stat.math.ethz.ch
Betreff: Re: [R]  Problems using "lm" in combination with "predict"

> I think you need 
> 
> predict(mod,newdate)
> 
> instead of 
> 
> predict(y,newdate)
> 
> 
> --- "Maja Schröter" <maja.schroeter at gmx.de> wrote:
> 
> > Hello everybody,
> > 
> > I'm trying to predict a linear regression model but it does not work.
> > 
> > My Model: y = Worktime + Vacation + Illnes + Bankholidays
> > 
> > My modelmatrix is of dimension  28x4
> > 
> > Then I want to make use of the function predict because there
> > confidence.intervals are include.
> > 
> > My idea was:
> > 
> > mod <- lm(y~Worktime+Vacation+Illnes+Bankholidays)
> > 
> > newdate=data.frame(x=c(324,123,0.9,0.1))
> > predict(y,newdate)
> > 
> > But I always get the message:
> > 
> > 
> > 'newdata' had 1 rows but variable(s) found have 28 rows
> > 
> > 
> > What can I do?
> > 
> > Yours, 
> > 
> > Maja
> > 
> > -- 
> > Psssst! Schon vom neuen GMX MultiMessenger gehört?
> > Der kanns mit allen: http://www.gmx.net/de/go/multimessenger
> > 
> > ______________________________________________
> > R-help at stat.math.ethz.ch mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
> > http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
> > 
> 
> 
> 
>        
> ____________________________________________________________________________________
> Looking for a deal? Find great prices on flights and hotels with Yahoo!
> FareChase.
> http://farechase.yahoo.com/

-- 
Psssst! Schon vom neuen GMX MultiMessenger gehört?
Der kanns mit allen: http://www.gmx.net/de/go/multimessenger