[R] Specify ID variable in daisy{cluster}

[David L Carlson]

You need to use hhid as the rownames for housing.cluster rather than
including it as a variable in the data.frame:

housing.cluster <-data.frame(htypec1, afforcr1, resyrc1, crowdcc1, chprbos1)
rownames(housing.cluster) <- hhid

Then it will not be included in the cluster analysis but will be used to
label the dendrogram.

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On
Behalf Of adlynch
Sent: Thursday, June 16, 2011 12:35 PM
To: r-help at r-project.org
Subject: [R] Specify ID variable in daisy{cluster}

Hi All - I am using the daisy function from the cluster library to create a
dissimilarity matrix.  I'm going to use that matrix to run a cluster
analysis.  My participants are identified with the variable, hhid.  However,
when I try to keep hhid in the dataset that I use to create the
dissimilarity matrix, daisy uses it to create the matrix rather than
ignoring it as an ID variable.  I need to have the ID variable so I can
later on identify which cluster each participant was classified as.  Any
thoughts would be much appreciated!

housing.cluster <-data.frame(hhid, htypec1, afforcr1, resyrc1, crowdcc1,
chprbos1)
housingdiss <- daisy(housing.cluster, metric="gower")


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