I have data in the following list format: USER,VARIABLE,COUNT user1, var1, 3 user1, var2, 4 user2, var1, 7 userN, var12, 5
And would like to have it format as a matrix: var1 var2 var12 user1 3 4 user2 7 userN 5 What is the suggested method to do this for 1 million rows, with 12 variables and ~ 4,000 unique users? Thank you, Tim Stutt t...@ischool.berkeley.edu [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.