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

["Maja Schröter"]

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