> From: Kjetil Brinchmann Halvorsen > > bogdan romocea wrote: > > >Here's something that works. I'm sure there are better solutions (in > >particular the paste part - I couldn't figure out how to avoid typing > >a[i,1], ..., a[i,10]). > > > >a <- matrix(nrow=1000,ncol=10) > >for (i in 1:1000) > > for (j in 1:10) > > a[i,j] <- sample(1:0,1) > > > >b <- vector(mode="character") > >for (i in 1:1000) > > b[i] <- paste(a[i,1],a[i,2],a[i,3],a[i,4],a[i,5], > > a[i,6],a[i,7],a[i,8],a[i,9],a[i,10],sep="") > > > > > Or > > b <- apply(a, 1, function(x) paste(x, sep="", collapse=""))
Or, as Peter pointed out recently: b <- apply(a, 1, paste, sep="", collapse="") Andy > Kjetil > > >#the most frequent row > >table(b)[table(b) == max(table(b))] > > > >HTH, > >b. > > > > > >-----Original Message----- > >From: Lisa Pappas [mailto:[EMAIL PROTECTED] > >Sent: Thursday, December 09, 2004 5:15 PM > >To: [EMAIL PROTECTED] > >Subject: [R] finding the most frequent row > > > > > >I am bootstrapping using a function that I have defined. The > >"Statistic" of the function is an array of 10 numbers. Therefore if > >I use 1000 replications, the "t" matrix will have 1000 rows each of > >which is a bootstrap replicate of this 10 number array (10 columns). > >Is there any easy way in R to determine which row appears the most > >frequently? > > > >Thanks, > >Lisa Pappas > > > >Huntsman Cancer Institute wishes to promote open communication while > >protecting confidential and/or privileged information. If you have > >received this message in error, please inform the sender and delete > >all copies. > > > >______________________________________________ > >[EMAIL PROTECTED] mailing list > >https://stat.ethz.ch/mailman/listinfo/r-help > >PLEASE do read the posting guide! > >http://www.R-project.org/posting-guide.html > > > >______________________________________________ > >[EMAIL PROTECTED] mailing list > >https://stat.ethz.ch/mailman/listinfo/r-help > >PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > > > > > > > > > > > -- > > > Kjetil Halvorsen. > > Peace is the most effective weapon of mass construction. > -- Mahdi Elmandjra > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > > ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
