[R] ploting a linear model

[Ernesto Jardim]

Hi

I have the result of a linear model "lm98" and I want to plot it to
analyse the regression but I'm getting the folowing error message

> lm98<-lm(log(U+1)~Bq+Gi+Lv+Tb+Bq:Gi+Bq:Lv+Bq:Tb+Gi:Lv+Gi:Tb+Lv:Bq)
> plot(lm98)
Error in plot.window(xlim, ylim, log, asp, ...) : 
        need finite ylim values
In addition: Warning message: 
NaNs produced in: sqrt(1 - hii) 

The response variable is tranformed by a log function but I'm adding 1
so that the 0 don't become inf.

Can someone explain me the problem ?

Thanks

EJ

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