[R] thurston case 5

[John Fox]

Dear Jared,

> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On
> Behalf Of japomani
> Sent: February-01-09 5:39 PM
> To: r-help at r-project.org
> Subject: Re: [R] thurston case 5
> 
> 
> John,
> 
> I installed the psych package and all it's dependencies. Then following
the
> psych manual, I type
> 
> thurstone(x, ranks = FALSE, digits = 2)
> 
> the result is
> 
> Error: could not find function "thurstone"
> 
> Any suggestions?

library(psych)

I hope that helps,
 John

> 
> Best,
> 
> Jared
> 
> John Fox-6 wrote:
> >
> > Dear Jared,
> >
> > See ?thurstone in the psych package. RSiteSearch("Thurstone") turns this
> > up
> > as the first hit. Also see the BradleyTerry package for the similar
> > Bradley-Terry model.
> >
> > Regards,
> >  John
> >
> > ------------------------------
> > John Fox, Professor
> > Department of Sociology
> > McMaster University
> > Hamilton, Ontario, Canada
> > web: socserv.mcmaster.ca/jfox
> >
> >> -----Original Message-----
> >> From: r-help-bounces at r-project.org
[mailto:r-help-bounces at r-project.org]
> > On
> >> Behalf Of japomani
> >> Sent: January-31-09 5:04 PM
> >> To: r-help at r-project.org
> >> Subject: [R] thurston case 5
> >>
> >>
> >> Hi, I hope some one can help. I need to compute Thurston's case 5 on a
> > large
> >> set of data. I have gotten as far as computing the proportional
> >> preference
> >> matrix but the next math is beyond me.
> >>
> >> Here us my matrix
> >>
> >> 0.500	0.472	0.486	0.587	0.366	0.483	0.496	0.434
> >> 0.528	0.500	0.708	0.578	0.633	0.554	0.395	0.620
> >> 0.514	0.292	0.500	0.370	0.557	0.580	0.615	0.329
> >> 0.413	0.422	0.630	0.500	0.783	0.641	0.731	0.663
> >> 0.634	0.367	0.443	0.217	0.500	0.351	0.907	0.686
> >> 0.517	0.446	0.420	0.359	0.649	0.500	0.325	0.559
> >> 0.504	0.605	0.385	0.269	0.093	0.675	0.500	0.625
> >> 0.566	0.380	0.671	0.337	0.314	0.441	0.375	0.500
> >>
> >> Can someone help me write an R script to compute the Thurston Case 5
> > values?
> >> The result should be the scale values for each item.
> >>
> >> I found three web pages that might be useful in this, but again, I
didn't
> >> know enough to translate them into a result.
> >>
> >> http://marketing.byu.edu/htmlpages/books/pcmds/THURSTONE.html
> >> http://www.personality-project.org/r/thurstone.html
> >> http://en.wikipedia.org/wiki/Law_of_comparative_judgment
> >>
> >> Thanks,
> >>
> >> Jared
> >> --
> >> View this message in context: http://www.nabble.com/thurston-case-5-
> >> tp21768835p21768835.html
> >> Sent from the R help mailing list archive at Nabble.com.
> >>
> >> ______________________________________________
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> >> 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.
> >
> > ______________________________________________
> > R-help at 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/thurston-case-5-
> tp21768835p21781083.html
> Sent from the R help mailing list archive at Nabble.com.
> 
> ______________________________________________
> R-help at 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.