[R] Clustering with ordinal data

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

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

Re: [R] Clustering with ordinal data

Re: [R] Clustering with ordinal data

Re: [R] Clustering with ordinal data

Hello Steve, 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.

Re: [R] Clustering for Ordinal data

On Wednesday 14 October 2009, Paul Evans wrote: Hi, I just wanted to check whether there is a clustering package available for ordinal data. My data looks something like: #1 #2 #3 #4. A B C D... D B C A... D C A A... where each column represents a sample, and each row some ordinal

[R] Clustering for Ordinal data

Hi, I just wanted to check whether there is a clustering package available for ordinal data. My data looks something like: #1 #2 #3 #4. A B C D... D B C A... D C A A... where each column represents a sample, and each row some ordinal values. I would like to cluster such that similar samples

Re: [R] Clustering with ordinal data

On Fri, 2008-02-15 at 10:45 -0800, Tim Smith wrote: Hi, Is there any clustering package in R that can cluster with ordinal data? thanks! daisy() in recommended package 'cluster' can generate dissimilarities for ordinal data using Gower's general (dis)similarity coefficient for mixed data.