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wrMisc (version 1.15.3.1)

.rowGrpSds: row group sd (main)

Description

This function calculates sd for matrix with multiple groups of data, ie one sd for each group of data.

Usage

.rowGrpSds(x, grp)

Value

This function returns a matrix of sd values per row and group of replicates

Arguments

x

numeric matrix where relplicates are organized into separate columns

grp

(factor) defining which columns should be grouped (considered as replicates)

See Also

rowGrpCV, rowCVs, arrayCV, replPlateCV

Examples

Run this code
set.seed(2016); dat1 <- matrix(c(runif(200)+rep(1:10,20)),ncol=10)
grp1 <- gl(4,3,labels=LETTERS[1:4])[2:11]
head(.rowGrpSds(dat1, grp1))

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