ICLUST.sort {psych} | R Documentation |
Given a cluster analysis or factor analysis loadings matrix, sort the items by the (absolute) size of each column of loadings. Used as part of ICLUST and SAPA analyses.
ICLUST.sort(ic.load, cut = 0, labels = NULL,keys=FALSE)
ic.load |
The output from a factor or principal components analysis, or from ICLUST, or a matrix of loadings. |
cut |
Do not include items in clusters with absolute loadings less than cut |
labels |
labels for each item. |
keys |
should cluster keys be returned? Useful if clusters scales are to be scored. |
When interpreting cluster or factor analysis outputs, is is useful to group the items in terms of which items have their biggest loading on each factor/cluster and then to sort the items by size of the absolute factor loading.
A stable cluster solution will be one in which the output of these cluster definitions does not vary when clusters are formed from the clusters so defined.
With the keys=TRUE option, the resulting cluster keys may be used to score the original data or the correlation matrix to form clusters from the factors.
sorted |
A data.frame of item numbers, item contents, and item x factor loadings. |
cluster |
A matrix of -1, 0, 1s defining each item by the factor/cluster with the row wise largest absolute loading. |
...
Although part of the ICLUST set of programs, this is also more useful for factor or principal components analysis.
William Revelle
http://personality-project.org/r/r.ICLUST.html
ICLUST.graph
,ICLUST.cluster
, cluster.fit
, VSS
, factor2cluster