[R] Error in contrasts message when using logistic regression code.
hoguejm at gmail.com
Tue Oct 23 20:43:54 CEST 2012
I have a rather large data set (about 30 predictor variables)
I need to preform a logistic regression on this data. My response variable
My code looks like this:
mylogit <- glm(Enrolled ~ A + B + C + ... + EE, data = data, family =
with A,B,C, ... as my predictor variables. Some categorical, some
continuous, some binary.
I run the code and get this error:
Error in `contrasts<-`(`*tmp*`, value = contr.funs[1 + isOF[nn]]) :
contrasts can be applied only to factors with 2 or more levels
Any ideas on how to fix this? I am fairly new to R so Im guessing there is
something missing/wrong in my logit code.
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