comparing matrix and vector and flagging matches

Hello,

I am using the ppswr function to perform probability proportional to size
sampling for a list of subjects, which returns the indices of the rows
sampled from a given matrix (of census blocks).  (e.g. 2,5,29,8, 29... rows
2, 5 and 8 are chosen once and row 29 is chosen twice for a particular
subject).  I would like to compare these indices returned from the ppswr
function to the original table and add a new variable to the original table
to indicate how many times a row was selected.  The sampling procedure needs
to happen once for each of 10,000 subjects, so must be within a loop.
Advice appreciated!

K

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