The conversion to a data frame and the transpose might be time consuming. In addition to other comments you have received, try this:
matrix(rawinput, ncol = 6, byrow = TRUE) and if you don't really need a data frame eliminate the conversion from matrix to data.frame. You might time this against the code you posted to see if it makes a difference. On Fri, Sep 12, 2008 at 12:34 PM, Michael A. Gilchrist <[EMAIL PROTECTED]> wrote: > Hello, > > I am currently using R to run an external program and then read the results > the external program sends to the stdout which are tsv data. > > When R reads the results in it converts it to to a list of strings which I > then have to maniuplate with a whole slew of commands (which, figuring out > how to do was a reall challenge for a newbie like myself)--see below. > > Here's the code I'm using. COMMAND runs the external program. > > rawInput= system(COMMAND,intern=TRUE);##read in tsv values > rawInput = strsplit(rawInput, split="\t");##split elements w/in the list > ##of character strings by "\t" > rawInput = unlist(rawInput); ##unlist, making it one long vector > mode(rawInput)="double"; ##convert from strings to double > finalInput = data.frame(t(matrix(rawInput, nrow=6))); ##convert > > Because I will be doing this 100,000 of times as part of an optimization > problem, I am interested in learning a more efficient way of doing this > conversion. > > Any suggestions would be appreciated. > > > Thanks in advance. > > Mike > > > ----------------------------------------------------- > Department of Ecology & Evolutionary Biology > 569 Dabney Hall > University of Tennessee > Knoxville, TN 37996-1610 > > phone:(865) 974-6453 > fax: (865) 974-6042 > > web: http://eeb.bio.utk.edu/gilchrist.asp > > ______________________________________________ > 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. > ______________________________________________ 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.
