Hi all, I am trying to create a unique identifier for each row, combining numbers from three columns.
Do you know if there is a general formula to do this (or some manual where I can read about this)? I figure I can use the numeric entries of the columns as "coordinates" and multiply them with different coefficients (different magnitudes) to get the unique ID - but it would be nice to read about such algorithms in general. Any links/input would be great - Ralph _________________________________________________________________ e. [[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.