search for: summaryprof

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2009 Feb 28
2
Rprofiling
Dear R People: Could someone recommend a good reference for Rprofing, please? Thanks, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: erinm.hodgess at gmail.com
2004 Oct 19
0
Question on Rprof(); was: Re: sapply and loop
...summaryRprof() : no events were recorded >>> > >>> > I am using R1.8.1 in windows. Why can't I get the results? >>> >>>Because you didn't do your homework, and didn't even follow your source. >>>The 'file' arguments of Rprof and summaryProf have to agree: see their >>>help pages (as the posting guide asks). >>> >>>-- >>>Brian D. Ripley, ripley at stats.ox.ac.uk >>>Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ >>>University of Oxford,...
2004 Oct 16
7
sapply and loop
Dear all, I am doing 200 times simulation. For each time, I generate a matrix and define some function on this matrix to get a 6 dimension vector as my results. As the loop should be slow, I generate 200 matrice first, and save them into a list named ma, then I define zz<-sapply(ma, myfunction) To my surprise, It almost costs me the same time to get my results if I directly use a loop
2004 Oct 16
7
sapply and loop
Dear all, I am doing 200 times simulation. For each time, I generate a matrix and define some function on this matrix to get a 6 dimension vector as my results. As the loop should be slow, I generate 200 matrice first, and save them into a list named ma, then I define zz<-sapply(ma, myfunction) To my surprise, It almost costs me the same time to get my results if I directly use a loop