Re: [R] Error in contrasts message when using logistic regression code.

On Oct 23, 2012, at 1:57 PM, hoguejm wrote: > How to change categorical vars to factors. There is nio such thing as a "categorical var" in R, although the closest thing to one is a factor class vector. If you have either numeric or character vectors and you want them to become factors: facva

Re: [R] Error in contrasts message when using logistic regression code.

How to change categorical vars to factors. I am very new at R Thanks -- View this message in context: http://r.789695.n4.nabble.com/Error-in-contrasts-message-when-using-logistic-regression-code-tp4647198p4647226.html Sent from the R help mailing list archive at Nabble.com. _

Re: [R] Error in contrasts message when using logistic regression code.

On Oct 23, 2012, at 1:43 PM, hoguejm wrote: > I have a rather large data set (about 30 predictor variables) > > I need to preform a logistic regression on this data. My response variable > is binary. > > My code looks like this: > > mylogit <- glm(Enrolled ~ A + B + C + ... + EE, data = data,

[R] Error in contrasts message when using logistic regression code.

I have a rather large data set (about 30 predictor variables) I need to preform a logistic regression on this data. My response variable is binary. My code looks like this: mylogit <- glm(Enrolled ~ A + B + C + ... + EE, data = data, family = binomial(link="logit")) with A,B,C, ... as my predic