Displaying 1 result from an estimated 1 matches for "tf4817540".
2007 Nov 15
1
Why is model.matrix creating 2 columns for boolean?
I have a data frame "reading" that includes a logical variable "OLT"
along with response variable "Reading" and predictor "True" (BOTH are
numeric variables; it's "True" as in the true value).
When I suppress the intercept, model.matrix gives me OLTTRUE and
OLTFALSE columns. Why? Can I do anything to prevent it?
> r <-