If I call the function tapply tapply(x, fact, sum) with arguments of length 500000 the function works very slow. Is there an alternative to get the same results? The factor has about 100000 levels. thanks Meinhard Ploner ps version: platform powerpc-apple-darwin5.3 arch powerpc os darwin5.3 system powerpc, darwin5.3 status major 1 minor 4.0 year 2001 month 12 day 19 language R -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
On Wed, 24 Jul 2002, Meinhard Ploner wrote:> If I call the function tapply > > tapply(x, fact, sum) > > with arguments of length 500000 the function works very slow. > Is there an alternative to get the same results? > The factor has about 100000 levels. >Yes. rowsum(). -thomas -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._