cluster | R Documentation |
This is a special function used in the context of formula used for Wilcoxon sum rank test for clustered data. It identifies the cluster id of observations, and is used on the right hand side of a formula.
cluster(x)
x |
A numeric variable of cluster id. |
THe function's only action is semantic, to mark a variable as the cluster indicator. If not supplied, will assume no cluster in the data.
x
clusWilcox.test.formula
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