Re: [R] Help "deleting negative values in a matrix, and do statistic analysis"

Sorry, my mistake. it works very well!!! thanks, Rui Barradas wrote > > Hello, > > > york8866 wrote >> >> Hi, John, >> >> the code ran well. >> >> however, somehow, the means were not calculated correctly using the >> following code. >> >> test <- read.csv("Rtestdataset.csv", as.is=T,he

Re: [R] Help "deleting negative values in a matrix, and do statistic analysis"

Hello, york8866 wrote > > Hi, John, > > the code ran well. > > however, somehow, the means were not calculated correctly using the > following code. > > test <- read.csv("Rtestdataset.csv", as.is=T,header=T) > test <- data.frame(test) > test > rowMeans(test) > apply(test,1,function(y)mean(y

Re: [R] Help "deleting negative values in a matrix, and do statistic analysis"

Hi, John, the code ran well. however, somehow, the means were not calculated correctly using the following code. test <- read.csv("Rtestdataset.csv", as.is=T,header=T) test <- data.frame(test) test rowMeans(test) apply(test,1,function(y)mean(y>=0)) Is there anything wrong? thanks, -- View

Re: [R] Help "deleting negative values in a matrix, and do statistic analysis"

It looks fine to me. Why do you say it does not work? Any error messages? John Kane Kingston ON Canada > -Original Message- > From: yu_y...@hotmail.com > Sent: Tue, 8 May 2012 10:06:07 -0700 (PDT) > To: r-help@r-project.org > Subject: Re: [R] Help "deleting negativ

Re: [R] Help "deleting negative values in a matrix, and do statistic analysis"

Hi, Rui, I tried your code. It did not work. thanks, -- View this message in context: http://r.789695.n4.nabble.com/Help-deleting-negative-values-in-a-matrix-and-do-statistic-analysis-tp4617792p4618080.html Sent from the R help mailing list archive at Nabble.com. _

Re: [R] Help "deleting negative values in a matrix, and do statistic analysis"

Hello, Try (x is your matrix) rowMeans(x) apply(x, 1, function(y) mean( y[y >= 0] )) Hope this helps, Rui Barradas york8866 wrote > > Dear all, > > I have encountered a problem with such a dataset: > > 1 52 2 5 2 6 > 1523 2 1 3 3 > 2