Nothing
midpoints <-
function (x, dp = 2)
{
lower <- as.numeric(gsub(",.*", "", gsub("\\(|\\[|\\)|\\]",
"", x)))
upper <- as.numeric(gsub(".*,", "", gsub("\\(|\\[|\\)|\\]",
"", x)))
return(round(lower + (upper - lower)/2, dp))
}
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