Re: [R] how to model a numeric factor as a non-ordinal factor

2009-10-28 Thread David Winsemius
So is this factor ordered or not. Is it just in your model to create unordered strata? What does the Time variable look like now? summary(Time) Depending on how Time and Treatment are associated with the subjects you may choose different options. And are they sitting in a dataframe? -- Dav

Re: [R] how to model a numeric factor as a non-ordinal factor

2009-10-28 Thread Peter Dalgaard
Mark Kimpel wrote: I am analyzing an experiment in which time is a factor, represented by numbers indicating time since last treatment, but in this particular case there is no reason to think that time has a numeric meaning in the sense that 24 would be greater than 6. We have no idea which genes

[R] how to model a numeric factor as a non-ordinal factor

2009-10-28 Thread Mark Kimpel
I am analyzing an experiment in which time is a factor, represented by numbers indicating time since last treatment, but in this particular case there is no reason to think that time has a numeric meaning in the sense that 24 would be greater than 6. We have no idea which genes will be increasing o