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tenasakai (7) [Avatar] Offline
I don't know what I am doing wrong, but when I type:

> patientdata$gender <- factor(patientdata$gender, levels = c(1,2), labels= c("male", "female"smilie)

I get:

Error in as.vector(x, mode) : invalid 'mode' argument

When/where did you introduce gender column for patientdata dataframe?
Help page for factor doesn't show it has parameter as.vector. I am confused.

Tena Sakai
robert.kabacoff (170) [Avatar] Offline
Re: section 2.4.2 (Value labels)
Hi Tena,

The statement is not working because gender was left out of the dataset in the last edit. I will make the corrections. Sorry for the confusion.