[R] lm() function to get coefficients doesn`t work

[Roger Peng]

read.table() has a paramter called 'dec' which specifies the decimal
separator.  You probably want to set dec = "," in your read.table() call.

-roger
_______________________________
UCLA Department of Statistics
rpeng at stat.ucla.edu
http://www.stat.ucla.edu/~rpeng

On Mon, 17 Jun 2002, Frithjof Weinert wrote:

>  Hi,
> 
> to get the residuals and coefficients I did the following:
> 
> kurse <- read.table("kurse.txt" header=T)
> 
> the data:
> 
>  index   bmw    mru   rwe    vow    kar    sie   bas
> 1 159,70 74,18 338,21 89,03 110,30 141,23 178,53 67,97
> 2 160,76 73,46 343,66 89,38 110,30 142,66 180,45 68,30
> 3 162,45 74,18 349,12 91,54 108,54 146,22 183,12 68,85
> 4 162,18 72,74 349,12 92,20 106,43 144,80 181,75 68,52
> 5 161,64 72,98 340,93 91,43 101,87 144,08 181,41 68,30
> 
> lm(index ~ bmw + mru + rwe + vow + kar + sie + bas,
> data=kurse)
> 
> But instead of getting the coefficients R is giving me this:
> 
> (Intercept)  kurse$bmw68,92  kurse$bmw69,39  kurse$bmw69,54
>           2.00            3.00            4.75            1.00
> kurse$bmw69,63  kurse$bmw69,87  kurse$bmw70,11  kurse$bmw70,35
>           8.00           14.00           10.00            7.50
> ...... and so on
> 
> Warning message: 
> "-" not meaningful for factors in: Ops.factor(y, z$residuals)
> 
> Please help. The function is maybe important for my exam.
> 
> cu
> Frithjof
> 
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