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Although you are playing with some tricky stuff, you seem to have
difficulty understanding the difference between a symbol and the value the
symbol represents. Re-reading section 6.1 of the Introduction to R that
comes with the software see
I know this has been explained a few times here in different scenarios, but I
am having a hard time digesting this.
The following code works fine as long as it's not inside a function (see below).
df$season <- as.character(df$season) temp <- model.matrix( ~ season - 1,
data=df) df <- cbind(df
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