Re: [R] VARIANCE across each ROW
Try this: # test data set.seed(1) x - matrix(rnorm(24), 6) # 6x4 matrix sd(t(x))^2 # [1] 0.5631489 1.9047905 0.7813566 0.7415535 0.4992331 1.7095818 # same but generates an intermediate 6x6 matrix # so less desirable if real matrix has large number of rows diag(var(t(x)) On 4/1/06, mark salsburg [EMAIL PROTECTED] wrote: I have a very large matrix. I would like to display the variance across each row. In other words, I want to output a vector containing the values of variance across row. When I use the function var(), it seems to give me the variability of each column. Any ideas?? __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
[R] VARIANCE across each ROW
I have a very large matrix. I would like to display the variance across each row. In other words, I want to output a vector containing the values of variance across row. When I use the function var(), it seems to give me the variability of each column. Any ideas?? [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] VARIANCE across each ROW
?apply apply(data,1,var) On Sat, 01 Apr 2006 21:27:56 -0500, mark salsburg [EMAIL PROTECTED] wrote: I have a very large matrix. I would like to display the variance across each row. In other words, I want to output a vector containing the values of variance across row. When I use the function var(), it seems to give me the variability of each column. Any ideas?? [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/ __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
