Re: [R] Nested variables
Daniel, Yes I am trying to model such data, and i need R to know that Site is nested within Habitat. Do I use some kind of command before running the model (like factor() and so on) or do i write it in the model formula. If so, how? You still are not telling the list enough, since nesting specifications are sometimes package/program specific. You could help yourself by reading some of R's basic documentation about how to specify a nested model. Then it will tell you what to do. ?formula Or read §11.1 of An Introduction to R (one of R's manuals). Regards, Mark. DanielWC wrote: Hi. Yes I am trying to model such data, and i need R to know that Site is nested within Habitat. Do I use some kind of command before running the model (like factor() and so on) or do i write it in the model formula. If so, how? Thanks Douglas Bates-2 wrote: On Fri, May 29, 2009 at 7:50 AM, DanielWC daniel.carsten...@gmail.com wrote: Hello I am working with a biological data including variables called Habitat and Site, example: Habitat Site Forest Low Forest Low Forest High Forest High I want to tell R that the Site variable is nested within the Forest variable (that it is not a new variable). Does anyone know how to do this? If you could explain what you mean by tell R, it would help. Are you trying to model such data and you want to know how to express the relationship between such factors in a model formula? __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- View this message in context: http://www.nabble.com/Nested-variables-tp23779402p23813539.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Nested variables
Hi. Yes I am trying to model such data, and i need R to know that Site is nested within Habitat. Do I use some kind of command before running the model (like factor() and so on) or do i write it in the model formula. If so, how? Thanks Douglas Bates-2 wrote: On Fri, May 29, 2009 at 7:50 AM, DanielWC daniel.carsten...@gmail.com wrote: Hello I am working with a biological data including variables called Habitat and Site, example: Habitat Site Forest Low Forest Low Forest High Forest High I want to tell R that the Site variable is nested within the Forest variable (that it is not a new variable). Does anyone know how to do this? If you could explain what you mean by tell R, it would help. Are you trying to model such data and you want to know how to express the relationship between such factors in a model formula? __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- View this message in context: http://www.nabble.com/Nested-variables-tp23779402p23813261.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Nested variables
On Fri, May 29, 2009 at 7:50 AM, DanielWC daniel.carsten...@gmail.com wrote: Hello I am working with a biological data including variables called Habitat and Site, example: Habitat Site Forest Low Forest Low Forest High Forest High I want to tell R that the Site variable is nested within the Forest variable (that it is not a new variable). Does anyone know how to do this? If you could explain what you mean by tell R, it would help. Are you trying to model such data and you want to know how to express the relationship between such factors in a model formula? __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
