FindID <-
function(ID, Data)
{
if(!is.object(ID) | !is.object(Data)) stop("ID and Data inputs must both be objects currently in your R workspace.")
if(!all(names(ID) %in% names(Data))) stop("ID is not a subset of Data. All names of ID must match with rows in Data.")
match.set <- Data[ ,match(names(ID), names(Data))]
row.matches <- apply(match.set, 1, match, ID)
ifelse(length(which(!is.na(apply(row.matches, 2, sum)))) == 0,
return(cat("No matches found.\n")),
return(which(!is.na(apply(row.matches, 2, sum)))))
}
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