similar to: Matrix subsetting with rownames

Hi, Here is another problem with data frame subsetting: > df <- data.frame(aa=1:3) > value <- data.frame(aa=11:12, row.names=c("A", "B")) > `[<-`(df, 4:5, , value=value) aa 1 1 2 2 3 3 A 11 B 12 > `[<-`(df, 5:4, , value=value) aa 1 1 2 2 3 3 B 12 A 11 For this last result, the rownames of the

Suggest you try R 1.9.1 patched. This is what I get on Windows XP with that: > matrixObj <- array(1:4, c(2,2)) > class(matrixObj) <- "matrix" > fooObj <- matrixObj > class(fooObj) <- "foo" > fooObj[1:2] [1] 1 2 > matrixObj[1:2] [1] 1 2 > getAnywhere("[.matrix") no object named '[.matrix' was found >

Hi, Any help on the following would be much appreciated I wish to capture the output (currently going to console) from an external executable. The executable is successfully run using system("program -switch ") and the output printed to the DOS console. How do I capture this output? I have tried redirecting the output to a text file, and then reading this in

I have the following problem. It is not of earthshaking importance, but still I have spent a considerable amount of time thinking about it. PROBLEM: Is there any way I can have a single textfile that contains both a) data b) programcode The program should act on the data, if the textfile is source()'ed into R. BOUNDARY CONDITION: I want the data written in the textfile in exactly

Hi List, Here is some example data. myDat <- read.table(textConnection("group id 1 101 1 201 1 301 2 401 2 501 2 601 3 701 3 801 3 901"),header=TRUE) closeAllConnections() corr_mat <-read.table(textConnection("1 1 .5 0 0 0 0 0 0 0 2 .5 1 0 0 0 0 0 0 0 3 0 0 1.0 0 0 0 0 0 0 4 0 0 0 1 .5 .5 0 0 0 5 0 0 0 .5 1

Good morning, Good morning, I'm trying to read the file into an array, with the following code. A<- as.matrix(read.csv("~/Desktop/Results/Cfile.csv", header = FALSE, sep=",")) The content of the file " ","1","2","3","4" "1", 484,43,67,54 "2",54,35,67,34 "3",69,76,78,55

Hi, I'm quite new to R, so excuse me if this problem has a simple solution. I'm working with an array, lets say i <- array(c(1:3,3:1), dim=c(3,2)) Then I want to give the rows and the columns names: rownames(i)<-c("a","b","c") colnames(i)<-c("d","e") The result is given below: d e a 1 3 b 2 2 c 3 1 Here comes my problem.

Hello, I am trying to iteratively build a build a panel of variables to discriminate between two groups. My starting position is a matrix of experimental data and I have a function that will work through all pairs of variables and produce sensitivities, specificities and p-values for each pair and write it to a file (above particular cut-offs). I have a second function that will read that file

Hello, I have stumbled upon a few cases where the behaviour of naming and subsetting in matrices seems unintuitive. All those look related so wanted to put everything in one message. 1. Why row/col selection by names with NAs is not allowed? x <- setNames(1:10, letters[1:10]) X <- matrix(x, nrow=2, dimnames = list(letters[1:2], LETTERS[1:5])) x[c(1, NA, 3)] # vector: works

Hello. I have an R program that calls gawk (GNU Awk 3.06 for Windows) from within pipe() to preprocess a large file before it is read into a data frame with read.table(). I've recently upgraded from Win98SE to WinXP, and have also upgraded from R1.5.0 to R1.6.1 over the past month or so. This program worked before the upgrade(s), but now fails. I observe the following sort of behavior with

Dear All, I have a correlation matrix say 'M' (4000x4000) for 4000 genes and I want to subset it to 'N' (190x190) for 190 genes. The list of those 190 genes are in variable 't'. So the idea is to read the names of genes from variable 't' and subset the matrix M accordingly. Any thoughts are welcome! Best Lee [[alternative HTML version deleted]]

Hi, I need help with two related issues: 1. I wish to drop repeating text "BST" from the below 'dates' string: [1] "2005-04-01 BST" "2005-04-04 BST" "2005-04-05 BST" "2005-04-06 BST" "2005-04-07 BST" "2005-04-08 BST" "2005-04-11 BST" "2005-04-12 BST" "2005-04-13 BST" "2005-04-14

On Fri, 7 Apr 2006 16:09:53 +0200 Brandt, T. (Tobias) wrote: > Hi > > Is there a reason why as.matrix.zoo doesn't set the rownames to the > index like as.data.frame.zoo does? Yes, oversight, I think ;-) Added to the devel-version of zoo. I'll try to get it out to CRAN in the next days. Z > Thanks > > Tobias > > > > library(zoo) > > x.Date

Hi I got a problem with creating a textfile: how can I create a textfile, which has a headline like: #data1 1 2 3 4 5 6 7 8 the problem is, how to bind text and matrix, so that the "read.table"-function will ignore the text and read the numbers. Thank you for help Michael -- 2

Hi everyone! I'm trying to teach myself R in order to do some data analysis. I'm a mathematics student and (only) familiar with matlab and latex. I'm working trough the "official" introduction to R at the moment, while simultaneously solving some exercises I found in the web. Before I post my (probably stupid) question, I'd like to ask you for some general advice. How do

Hi, i have a annoying problem that drives me crazy. We have set up a Digital/Unix box with samba and the clients (W95) can mount the shares from this box. On the Unix side we create a textfile which will be periodically (or not) appended with new data. A Application on the W95 side reads this file. The Problem is, that the textfile has new lines, the Application don't see them !!! To

The problem is that the drop is only applied (or not) after the subsetting, so what R does is: - Getting the subset, which means a 1 x 1 matrix. - Only then It either returns that as is (when drop=FALSE), or removes ALL dimensions of extent 1, regardless of whether these are rows or columns (or higher dimensions). And it can't keep any names, because what name should be returned? The name

Hi all. I am going to do a simple "voting application" for a radiostation. The idea is to have listeners call in to vote on songs. What I want to do is to take a phonenumer for each song and present the result on a simple webpage. Eg. To vote on song number one, call 555-1111 To vote on song number two, call 555-2222 etc etc. When the listener calls in, a playback tells him:

Hello here. I'm struggling to understand R's subsetting behavior in couple of edge cases - subsetting row in a single column matrix and subsetting column in a single row matrix. I've read R's docs several times and haven't found answer. Consider following example: a = matrix(1:2, nrow = 2, dimnames = list(c("row1", "row2"), c("col1"))) a[1, ] # 1

Hi all, I have an object that looks (roughly) like the following: l <- list(a = matrix(rnorm(9), 3), b = matrix(rnorm(9), 3), c = matrix(rnorm(9), 3)) l$a[3,] <- sample(c("Message 1", "Message 2", "Message 3")) l$b[3,] <- sample(c("Message 1", "Message 2", "Message 3")) l$c[3,] <- sample(c("Message 1",