try the following:
model.it <- function (form, data, factor.id) {
if (!missing(factor.id) && all(factor.id %in% names(data)))
data[factor.id] <- lapply(data[factor.id], factor)
glm(form, data = data)
}
y <- c(1,2.1,3.3,4.3,5,6.5)
x1 <- c(1,1,1,2,2,2)
x2 <- c(1,2,3,1,2,3)
x3 <- c(
This is hopefully a trivial problem for list subscribers, but I am very
new to writing R functions.
I wish to call an R function written by myself from another program to
fit a model. I need
to tell it which of the independent variables are factors. I need to do
this in a generic way,
so that when
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