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Data frame index?

Kenneth Cabrera 
Hi, R users:

I have a data.frame (not a matrix), I got a vector with the same length 
as the
number of records (rows) of the data frame, and each element of
that vector is the column number (in a specific range of columns) of the 
corresponding
record that I must set to zero.

How can I  do this without a "for" loop?

Thank you for your help.

Kenneth

Thread (12 messages)

Ben Ridenhour Bootstrapping help Jan 17 Andrew Robinson Bootstrapping help Jan 17 Kenneth Cabrera Data frame index? Jan 17 Jacques VESLOT Data frame index? Jan 18 PIKAL Petr Data frame index? Jan 18 Dimitris Rizopoulos Data frame index? Jan 18 Duncan Murdoch Data frame index? Jan 18 Brian Ripley Data frame index? Jan 18 Ben Ridenhour Bootstrapping help Jan 18 Andrew Robinson Bootstrapping help Jan 18 Ben Ridenhour Bootstrapping help Jan 18 Andrew Robinson Bootstrapping help Jan 18