Hi all, I have a relative large amount (several thousand rows, but a small amount of unique objects) of data in a format like this:
1 text_string 1 text_string 1 text_string 2 text_string 2 text_string 3 text_string 3 text_string 3 text_string 3 text_string 3 text_string . . . n text_string I want to create an n x p matrix, n objects (=40) and p unique text strings. Nij is number of occurrences of a text string j in object i. What is the most efficient way of creating this matrix? Best regards, Erika Ahl ______________________________________________ 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.
