Adjust a table by multiplying rows and columns in order to reproduce the provided margins, preserving all the odds ratios. This procedure is know as the RAS or Deming-Stephan algorithm, as iterative proportional fitting (IPF) or as biproportional fitting.
ras(tab, row, col, tolerance = .Machine$double.eps)The adjusted table with row sums equal to row and column sums equal to col.
a two-way table with only positive or zero entries
a vector of strictly positive elements containing the wanted row margins (sums).
a vector of strictly positive elements containing the wanted column margins (sums).
the convergence criterion to stop iterating.
Milan Bouchet-Valat
Note that sum(row) must be equal to sum(col) for the algorithm to make sense.