d <- nlmixr2data::theo_sd
d$SEX <-0
d$SEX[d$ID<=6] <-1
covarsVec <- c("WT")
# Normalized covariate (replaced)
df1 <- normalizedData(d,covarsVec,replace=TRUE)
# Normalized covariate (without replacement)
df2 <- normalizedData(d,covarsVec,replace=FALSE)
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