[R] Clustering with ordinal data

[Steve_Friedman at nps.gov]

Thanks Phil,

I'll do so now.

Much appreciated.

Steve

Steve Friedman Ph. D.
Spatial Statistical Analyst
Everglades and Dry Tortugas National Park
950 N Krome Ave (3rd Floor)
Homestead, Florida 33034

Steve_Friedman at nps.gov
Office (305) 224 - 4282
Fax     (305) 224 - 4147


                                                                           
             Phil Spector                                                  
             <spector at stat.ber                                             
             keley.edu>                                                 To 
                                       Steve_Friedman at nps.gov              
             10/19/2010 02:23                                           cc 
             PM                        r-help at r-project.org                
                                                                   Subject 
                                       Re: [R] Clustering with ordinal     
                                       data                                
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




Steve -
    Take a look at daisy() in the cluster package.

                                                             - Phil Spector
                                                              Statistical
Computing Facility
                                                              Department of
Statistics
                                                              UC Berkeley

spector at stat.berkeley.edu

On Tue, 19 Oct 2010, Steve_Friedman at nps.gov wrote:

>
> Hello
>
> I've been asked to help evaluate a vegetation data set, specifically to
> examine it for community similarity. The initial problem I see is that
the
> data is ordinal.   At best this only captures a relative ranking of
> abundance and ordinal ranks are assigned after data collection.    I've
> been trying to find a procedure in R that can handle ordinal based
> classification and so far have not found one.
>
> Does one exist ?  If there is one, which package supports this type of
> analysis and  what is the function ?
>
> Thanks in advance.
> Steve
>
>
>
>
> Steve Friedman Ph. D.
> Spatial Statistical Analyst
> Everglades and Dry Tortugas National Park
> 950 N Krome Ave (3rd Floor)
> Homestead, Florida 33034
>
> Steve_Friedman at nps.gov
> Office (305) 224 - 4282
> Fax     (305) 224 - 4147
>
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