[R] bug in dummy.coef?
dwinsemius at comcast.net
Fri Oct 25 00:57:36 CEST 2013
On Oct 24, 2013, at 1:51 AM, Alexandra Kuznetsova wrote:
> Dear all,
> Running the following code produces an error in dummy.coef. I guess it might be a bug..
>> ctl <- c(4.17,5.58,5.18,6.11,4.50,4.61,5.17,4.53,5.33,5.14)
>> trt <- c(4.81,4.17,4.41,3.59,5.87,3.83,6.03,4.89,4.32,4.69)
>> group <- gl(2, 10, 20, labels = c("Ctl","Trt"))
>> weight <- c(ctl, trt)
>> x <- rnorm(length(weight))
>> lm.D9 <- lm(weight ~ group + x + I(x^2))
> Error in rep.int(xl[[i]][1L], nl) : invalid 'times' value
As Rolf Turner pointed out the help page says there are limitations to that function and its only desiged for specific purposes. What are you trying to accomplish?
Alameda, CA, USA
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