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formula_norm
2012 Mar 19
0
Reshape data frame with dcast and melt
...into long form
data_long <- melt(data, id.vars = ids, variable.name="Data_Points",
value.name="value")
data_long$value <- as.numeric(data_long$value)
# Remove rows were analyte value is NA
data_long <- data_long[!is.na(data_long$value), ]
# Resort data
formula_sort <- as.formula(paste("~", paste(ids, collapse="+")))
data_long <- sort(data_long, f = formula_sort)
return(data_long)
}
reshape_wide <- function(data, ids) {
# Bring data into wide form
formula_wide <- as.formula(paste(paste(ids, collapse="+")...