search for: evans48

Hi, I wanted to download a file and did the following: --------------------------------------------------------- > fileLink <- 'ftp://ftp.ncbi.nih.gov/pub/geo/DATA/supplementary/series/GSE1000/GSE1000_RAW.tar' > download.file(fileLink,'/geoDat') trying URL 'ftp://ftp.ncbi.nih.gov/pub/geo/DATA/supplementary/series/GSE1000/GSE1000_RAW.tar' ftp data connection made,

Hi, I had a function that looked like: diff <- lm(x ~ y + z) How can I pass the argument to the 'lm' function on the fly? E.g., if I pass it in as a string (e.g. "x ~ y + z"), then the lm function treats it as a string and not a proper argument. many thanks [[alternative HTML version deleted]]

Hi, I work with bio-conductor, but this is probably a basic R question. I want to emulate the GOBPOFFSPRING$"GO:0008150" command: > allBP <- GOBPOFFSPRING$"GO:0008150" > class(allBP) [1] "character" > length(allBP) [1] 16066 > I want to create a function so that I can execute the command by passing as a parameter the portion in quotes in the above

Hi, I am using the windows version of R. I wanted to copy a directory (containing several files) to another directory. Is there any command in R that will let me do this (something like the 'cp' command in UNIX)? I have looked at 'file.copy', but as the name implies I think it only copies one file at a time. thanks! [[alternative HTML version deleted]]

Hi, How can I get double quotes embedded in the string? Example: -------------- str1 <- '"xyz"' ## desired output # abc"xyz" qr2 <- paste('abc',str1,sep='') print(qr2) ----------------- Actual output: > [1] "abc\"str\"" I also tried putting an escape sequence before the quote, but couldn't get the string that I

Hi all, How can I get R to change the default precision value? For example: > x=0.99999999999999999 > 1-x [1] 0 > Is there a way that I can get a non-zero value using some parameter, or some package? many thanks. [[alternative HTML version deleted]]

Hi all, I have a visualization question regarding sets. My problem is as follows: I have several sets, each having some members (or 'points'). I would like to connect the points, while keeping the sets. For example, if I have 3 sets (Set 1 contains points A, B, C): Set 1: ------ A, B, C Set 2: ----- A, D, E Set 3: ----- C, D, G, H I would like each set to be represented by a circle

Hi, I wanted to draw a heatmap with some horizontal lines. For example: #------ code ------ mat <- matrix(-1:1,7,9) heatmap.2(mat,Rowv=NA,trace = 'none',key=F) #----end code ----- In this heatmap, I want to subgroup the rows. For instance, I would like to group rows 5,6 & 7 together, and would draw a black line between rows 4 & 5 to demarcate the group. Similarly, I want to

Hi, I just wanted to check whether there is a clustering package available for ordinal data. My data looks something like: #1 #2 #3 #4..... A B C D... D B C A... D C A A... where each column represents a sample, and each row some ordinal values. I would like to cluster such that similar samples appear together. thanks! [[alternative HTML version deleted]]

Hi, I was trying to make a graph using trellis, and my code is: ----------------------------------------------------------------- library(lattice) makeGraph <- function(){ trellis.device() tbg <- trellis.par.get("background") tbg$col <- "white" trellis.par.set("background",tbg) # Test Data mfr <- matrix(sample(1:100,50,replace=T),ncol=2)

Hi, I wanted to install Rgraphviz. From the R GUI, I downloaded the package but when I tried to load it I got the following error message: "This application has failed to start because libcdt-4.dll was not found. Re-installing the application may fix this problem." The R commands and errors are: > utils:::menuInstallPkgs() trying URL

Hi, I wanted to read in a table that had hyphens in the header / column names. When I read it in however, it replaces the hyphens with a dot. Which parameter in the read.table function do I need to set to change this behaviour? Example code: jm <- matrix(1:4,2,2) rownames(jm) <- c('a','b') colnames(jm) <- c('a-1','a-2')