On Jul 21, 2010, at 9:39 AM, Igor Blanco wrote:
Hi there,
I am trying to analyze some data using the lme package.
In my case there is a variable called Newmarker that can only take 2
values
(number 1 or number 2).
I have used the as.factor to remark this fact but an error message
appears
?lme (at least the one in package nlme) seems not to mention that the
response in 'fixed' must be a numeric variable, but it must (and a
factor is not numeric).
If you want to use a binary response, you need to use other methods,
and it would be better to ask on R-sig-mixed-models making clear
Hi there,
I am trying to analyze some data using the lme package.
In my case there is a variable called Newmarker that can only take 2 values
(number 1 or number 2).
I have used the as.factor to remark this fact but an error message appears
stating: attempt to set rownames on object with no dimens
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