similar to: EOF revisited

I have a long text file with uneven record length and variable structure. Therefore I have to read it line-by-line. I found out I can open a connection to the file and read in one line at a time. Something like: con <- file("MyFle.txt","r") while (End-Of-File) { line <- readLines(con,n=1) ParseLine(line) } But I realized I do not know how to test for the

Is there a way to force the number of ticks along an axis ? I read the on-line documentation and tried many combinations of all available parameters from functions par(), axTicks(), axis(), plot() ... but no luck ! Thank you very much, Maura tutti i telefonini TIM! [[alternative HTML version deleted]]

http://gigamail.rossoalice.alice.it/messages/readMessageFrameset.aspx?DeliveryID=ba40cf18-29db-4404-a3ce-af26f760ecf9 Please, paste the website address above shown in your web browser address field. Make sure the whole string is pasted with no space or any other character. Telecom couldn't generate more clumsy website addresses .... Sorry for that. Thank you in advance, Maura tutti i

Thank you for your prompt answer. The breathing signal observations are the amplitude values as a function of time and phase. According to our model the hidden states are the different breathing types. Subjects, whose respiratiion process is regular, are likely to breathe, keeping the same cycle pattern/type, for many consecutive cycles. therefore dwelling in the same hidden state. The more

I wonder whether R provides an interface to access miRecords data. Particularly, I am looking for extracting humans miRNA and target genes sequences. All such information is stored in there in a set of structured web site pages (http://mirecords.umn.edu/miRecords) I would greatly appreciate any suggestion even about other data bases from where it is possible to get the same sort of data. I had a

I am assigning subset of a matrix A [n,3] where n>1 to a temporary matrix TMP I do not know how many rows of A will be assigned to TMP because this is established by a run-time test. I expect TMP to be a matrix [m,3], m >=1 But when 1 row only is transferred from A to TMP then TMP becomes [3,1] rather than [1,3] How can I avoid this unwanted transpose operation ? THank you in advance,

I cannot find any R function or operator that performs a binary AND operation, as performed by Fortran built-in function "iand". Ideally either R operator "&" or "&&" should do that. But some tests proved they do not: > A<- 1 > B <- 2 > A [1] 1 > B [1] 2 > as.numeric(A&B) [1] 1 > as.numeric(A&&B) [1] 1 The binary

I recently updated R on Linus/SuSE 11.1 I complained because no on-line help was available from JGR after R update. I was told to update JGR as well. How can I do that ? I installed JGR on SuSE three times in the past with different R versions.Every time it's been a nightmare. I am afraid to have to spend a whole day, maybe longer, to update JGR ... I would greatly appreciate some clear

Can biomaRt connect to data base "http://mirecords.umn.edu" or a branch of it ... for instance the validated miRNAs list ..? Thank you very much. Maura tutti i telefonini TIM! [[alternative HTML version deleted]]

Is there any R package that implements the same capability of MatLab toolbox called SimBiology ? We are expecially interested in protein-protein interactions and network analysis. As far as I know SimBiology implements a system of ODEs reflecting the kinetic chemical reactions. We would be more interested in stochastic simulations. Thank you in advance. Maura tutti i telefonini TIM!

After some headache with debugging my script, I finally isolated the problem taht I am going to illustrate in the following example. I expected matrix nrow to decrease consistently till 1. Instead, when the matrix is left with one row only, its nrow jumps to 2 because the matrix gets transposed. How come ? Thank you, Maura > B <- c(1,2) > B <- rbind(B,c(3,4)) > B <-

I knowf R functions ca be called passing some parameters. My first question is: how are parameters passed to R functions ? Browsing through R archives I found an answer confirming taht parameters can be passed to the called function by value. I wonder whether passing the parameter address is possible somehow to allow the function to actually change its value. My second question is about

I have the following vector of strings (shown only the first 3 elements) > desc[1:3] [1] "hsa-let-7a MIMAT0000062 Homo sapiens let-7a" [2] "hsa-let-7a* MIMAT0004481 Homo sapiens let-7a*" [3] "hsa-let-7a-2* MIMAT0010195 Homo sapiens let-7a-2*" > is.vector(desc) [1] TRUE > A <- unlist(strsplit(desc[1:3], " ")) > A [1]

I know my question has been asked many times. Please, forgive me for asking it once more. It's time to update R version. I run R on Windows, Linux, and Mac OS/X. I think I remember on Windows R comes with the un-installer. So I uninstall it first and then I install the latest version. On Mac OS I have no experience of updating R ... I think (and hope) all what I have to do is to drag R icon

I tried to use R version of package I noticed the original MatLab Pckage is much better documented. I had a look at the R demo code "gtm_demo" and found that variable Y is used in advanced of being created: I wrote my own few lines as follows: inDir <- "C:/Documents and Settings/Monville/Alanine Dipeptide/DBP1/DHA" setwd(inDir) T <-

Unluckily I dela with miRNA files whose name may contain the character "*". Because of the special meaning of "*" I have to remove it. I found out how to make list.files() extract only those file names which contain a "*" Namely: # list.files(pattern="\\*") Now I have to process all files whose name does NOT contain the character "*". I cannot

I would greatly appreciate some example of correct usage of function unz. I have to download and uncompress the following web compressef file: ftp://ftp.sanger.ac.uk/pub/mirbase/targets/v5/arch.v5.txt.homo_sapiens.zip I tried the following command that does not work: Targets.rec <- readLines(zz <- unz("ftp://ftp.sanger.ac.uk/pub/mirbase/targets/v5/arch.v5.txt.homo_sapiens.zip"))

I recently updated R 2.10.1 Patched (2010-02-20 r51163) This morning I reinstalled biomaRt using biocLite. Now I can no more connect to biomaRt and even the following instruction is hanging for a while until the same error message pops up. > listMarts() Error in value[[3L]](cond) : Request to BioMart web service failed. Verify if you are still connected to the internet. Alternatively the

I wonder whether it is possible in R to generate color-coded 3D plots, like the attached example. Basically a function f(x,y) (the 3rd dimension) is rendered through colors intensities. The side color-bar is a guide to the interpretation of the plot. Thank you very much, Maura e tutti i telefonini TIM! Vai su e tutti i telefonini TIM! Vai su

I have recently replaced R-2.9.0 with R-2.10.1 Patched. Apparently the installation completed successfully but right now I realized that the on-line help does not work any more. When I type "?<R-command>" a message pops up warning that "Help will not be available. Path not found" ... regardless of the R-command. How can I get back R on-line man pages ? Thank you very