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Like tabulate but entire rows are the unit of tabulation. The data.frame is not sorted, but must be sorted already.
tabulate
tabulateRows(observed)
a sorted data.frame holding ordered factors in every column
orderCompletely
df <- as.data.frame(matrix(c(sample.int(2, 30, replace=TRUE)), 10, 3)) df <- df[orderCompletely(df),] tabulateRows(df)
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