Use of offset in lm regression - R

Question

I have this code

dens <- read.table(\'DensPiu.csv\', header = FALSE)
fl <- read.table(\'FluxPiu.csv\', header = FALSE)
mydata <- data.frame(c(dens),         


        

Answer 1

Your offset term has to be a variable, like x and y, not a numeric constant. So you need to create a column in your dataset with the appropriate values.

dat$o <- 283.56
lm(y ~ I(x - x0) - 1, data=dat, offset=o)