Gabor Grothendieck wrote: > Convert dat to a matrix and see if working with the > matrix instead of a data frame speeds things up > enough.
In the Hmisc package the asNumericMatrix and matrix2dataFrame functions facilite this. Also look at the summarize and mApply functions in Hmisc, which can be quite fast. Frank Harrell ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
