search for: scgn

...she is blind), and cannot access the command line (Menus are ok). - Duncan Murdoch (Murdoch.duncan at gmail.com) suggested as preliminary workaround to run RTerm in a command window, to run R from within EMACS or to try out the JGR front end (see p. 9 of http://stat-computing.org/newsletter/issues/scgn-16-2.pdf). Within the next days he kindly collaborated with the manufacturer of our screen reader and implemented a blinking cursor in the R-GUI. My student installed R-devel 2.12.0 as suggested and is happily using R with her screenreader. - Brett Presnell (presnell at stat.ufl.edu) suggested R...

Is it possible to vectorize anova over the output of a vectorized lm? I have a gene expression matrix with each row being a gene and columns for samples. There are several factors with interactions. I can get p values by looping over the matrix with lm and anova, but I would like to make this as computationally efficient as possible. I am able to vectorize the lm command, but when I try to use

Hello, I have a question regarding how to speed up the t.test on large dataset. For example, I have a table "tab" which looks like: a b c d e f g h.... 1 2 3 4 5 ... 100000 dim(tab) is 100000 x 100 I need to do the t.test for each row on the two subsets of columns, ie to compare a b d group against e f g group at each row. subset 1: a b d 1 2 3 4 5 ... 100000

Dear R-Experts, a student of mine tries to use the Windows-Rconsole with screen reading software (she is blind), and cannot access the command line (Menus are ok). The company which produces her screen reader tells her that this is due to the cursor used in Rconsole, which is static, not blinking. They maintain that if the cursor could be changed to a blinking one, she should be able to access

Dear R users, I have a matrix a and a classification vector b such that > str(a) num [1:50, 1:800000] and > str(b) Factor w/ 3 levels "cond1","cond2","cond3" I'd like to do an anova on all 800000 columns and record the F statistic for each test; I currently do this using f.stat.vec <- numeric(length(a[1,]) for (i in 1:length(a[1,]) { f.test.frame

...project, I think we'd appreciate it. In the meantime, using Rterm in a command window is one solution. There are also other front ends available that may work: running R from within Emacs, or using the JGR front end (see the article on p. 9 of http://stat-computing.org/newsletter/issues/scgn-16-2.pdf). Duncan Murdoch ------------------------------ Message: 34 Date: Tue, 4 May 2010 16:06:38 +0200 From: Petr PIKAL <petr.pikal at precheza.cz> To: nevil.amos at sci.monash.edu.au Cc: r-help-bounces at r-project.org, r-help at stat.math.ethz.ch Subject: [R] Odp: How to replace all...