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Patrick Burns wrote: > 'The R Inferno' page 78 is one source you can > look at. > > > Patrick Burns wow .. nice! .. thanks for posting this reference. Esmail

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Atul Kulkarni wrote: > Hi List, > > I remember someone mentioning a R-specific bundle of Emacs. Can you please > post link again? works great! http://vgoulet.act.ulaval.ca/en/ressources/emacs/ HTH, Esmail

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Erin Hodgess wrote: > I remember reading the colSum and colMean were better, when you need > sums and means > Well .. I'm waiting for the experts to jump in and give us the straight story on this :-)

Doran, Harold wrote: >> lm(y ~ x-1) >> solve(crossprod(x), t(x))%*%y # probably this can be done more >> efficiently > > > You could do > > crossprod(x,y) instead of t(x))%*%y > that certainly looks more readable (and less error prone...

jim holtman wrote: > yourDF <- cbind(yourDF, f=yourDF$a+yourDF$b, g=yourDF$a * 3, > h=yourDF$c + yourDF$d) Thanks Jim, I also learned about the transform() method from Erik which will also work beautifully. Esmail

>> # determine which data matches >> matches <- t(pop) == target # 't' due to matching in column order >> >> # colSums equal to COLS will indicate matches >> which(colSums(matches) == COLS) Neat! .. somewhat similar to the solution I came up with in the meantime, only...

Gene Leynes wrote: > This is my first help post, hope it works! > > Just check out the "sample" function > At the command line type: > ?sample > > I think it will be pretty clear from the documentation. Yes, most excellent suggestion and quite...

Spencer Graves wrote: > If you want to hide the fact that you are using R -- especially if > you charge people for your software that uses R clandestinely -- that's > a violation of the license (GPL). No on both accounts .. but...

hadley wickham wrote: > 2008/6/20 cmr.Pent at gmail.com <cmr.Pent at gmail.com>: > > If you do nothing to your code, in 18 months time its performance will > have doubled because computers will have become faster. Your code...

Anh Tran wrote: > Hi, > What's one way to convert an integer to a string with preceding 0's? > such that > '13' becomes '00000000013' > to be put into a string > > I've tried formatC, but they removes all the zeros...

Mark Kimpel wrote: > > checking for gcc... gcc > checking for C compiler default output file name... > configure: error: C compiler cannot create executables > See `config.log' for more details. Are you running this as root? Or do you have the right...

Hello, which.max() only returns one index value, the one for the maximum value. If I want the two index values for the two largest values, is this a decent solution, or is there a nicer/better R'ish way...