similar to: require() is not giving TRUE / FALSE statements ?

Dear list, I have encountered a special case for searching a linear regression where I'm not satisfied with the results obtained using the traditional least squares method (sometimes called OLS) for estimating/optimizing the residues to the regression line (see code below). Basically, a group of my x-y data are a bit off the diagonal line (in my case the diagonal represents the ideal or

Dear guRus, I'd like to learn how to make a function recognize the name of an object/vector given as argument If I have : testFun <- function(x,y) plot(x,y, main=paste("plot of",names(x),"and",names(y)) ) # this just a simple example ... a1 <- 5:8 b1 <- 9:6 testFun(a1,b1) # Returns the plot, but not the names of the objects/vectors given as arguments, # but

Dear list, I?m using R embedded in another program (coded in tcl/tk) under Windows Vista. In this context I don?t launch Rgui.exe but rather Rtem.exe. Now I have a problem finding libraries not specifically installed as administrator (and which are not in the path ?program files? but in Contacts\Documents of the current user). To be precise, the user launching my tcl/tk program can?t find

Dear list, when running a mood.test() (part of package "stats") on slightly longer vectors (than the example from the help-page) we get the error-message shown below : once both vectors tested are of length 50 this error oocurs. Note, that this problem didn't occur with R-2.7.x (or even older versions). > x <- rnorm(50,10,5) > y <- rnorm(50,2,5) > >

Dear list, I'm wondering how to optimize functions/processes like the one shown below (which simplifies something we're trying to do with very large datasets). In many cases I've noticed that using apply, sapply etc can help speeding up processes, but in this case I don't see how I could do so. a <- runif(10000000,0.5,1.6) C <- 2 M <- 10000000 system.time( for (i in

Dear List, when reading MS Excel files in R using package RODBC I encountered the problem of having the first line of data getting omitted. I read the data as : > library(RODBC) > channel1 <- odbcConnectExcel("myFile.xls") > sheet1 <- sqlQuery(channel1, "SELECT * FROM [Cell measures (1)$]") # I use sqlQuery() instead of sqlFetch() since the sheet I

Dear List, we're trying to install R on Solaris10 on a x86 (amd64). During the installation we pass successfully the ./configure but we get an error through the built-in function "_isnan" which we see existing in /lib When passing the command "make" we get : gcc -std=gnu99 -I../../src/extra/zlib -I../../src/extra/bzip2 -I../../src/extra/pcre -I. -I../../src/include

Dear guRus, I'm maintaining central R installation (Linux) for our institute. The startup screen of R traditionally echoes some messages (starting with "R version ...Copyright (C).. The R Foundation for Statistical Computing...") and I'd like to display for example right after these messages some other messages about our specific setup, how to contact me etc ... What

Dear List, as I'm trying to install R and Rgraphwiz on a Fedora Linux, I have a problem with the environement variable "PKG_CONFIG_PATH". The library "libgvc" is not getting recognized / found, although a recent version libgvc is on the system and can be seen via /usr/lib64. I've tried to edit the paths described in /etc/ldpaths but without any success. Any hints how

Hi, Please could somebody has any information about the following package: IlluminaGUI, published here: http://bioinformatics.oxfordjournals.org/cgi/content/abstract/btm101v1 The link given in the article is dead and authors doesn't reply ! Is there someone who uses it ? Thank you very much for help -- View this message in context:

Hi, I'm trying to realise a repport with R and Latex (TeXnicCenter and Miktex for Windows) using Sweave(). I'd like to save my plots in a given size. How can I do that ? The code is : \SweaveOpts{prefix.string = figs/plot, eps = FALSE, pdf = TRUE} <<partI, echo=FALSE ,fig=TRUE, include=FALSE>>= plotFunction() @ \includepdf[pages=-]{figs/plot-partI} When I use

HI, R user, I generate the vectors with the same length. I want to put each vector into each column of data frame. Why it doesnt work`? rm<-data.frame() for(a in 1:6){ rm[,a]<-getmeasure(p1,a,speech) } thanks a lot Tammy _________________________________________________________________ Share your memories online with anyone you want.

Dear list, I just realized that one of the examples given in the help page to the function makeCluster of the library(snow) has a small syntax error : ## to get started library(snow) ?makeCluster .. will open a halp page containing the command towards the end of the examples : cl <- makeCluster(c(rep(list(macOptions), 2), rep(list(lnxOptions), 2), rep(list(winOptions),

Dear all I am trying to learn R I was trying to calculate standard deviation here are the commands and outputs in R > sd(Ht_cm[type=='SD'])[1] 3.283605> sd(Ht_cm[from_treeline=='above'])[1] 16.83289> sd(Ht_cm[type=='SD'][from_treeline=='above'])[1] NA> the problem is that, i could not understand why the third command could not give any result.

Dear list, this seemed to me like a very trivial question, but finally I haven't found any similar postings with suitable solutions on the net ... Basically, instead of regressing two simple series of measures 'a' and 'b' (like b ~ a), I would like to use independent replicate measurements for each variable at each level (ie, instead of having just one 'a' and one

hi all. how can i adress a array directly. for example i wanna give array 1 other labels than array 2. How can I overcome this problem? ...this doesn't work tab <- array(1:8, c(2, 2, 2)) dimnames(tab[,,1]) <- list(c("No","Yes"), c("No","Yes"),c("ARRAY1")) dimnames(tab[,,2]) <- list(c("big","small"),

Dear all, Dear all, I am a relatively new user. I have an ascii file with 550 rows and 400 columns. The file contain values ranging from 1 to 2000 and some values with -9999. I want to generate a new file where the -9999 values are replaced with 0 values, the other values with the 1.0 value. What should I do, Thanks Taiseer

hello, i have a couple of .R files distributed about my file system. i commonly source() these from other files, but i have to include the full file path. this is not always convenient if you move files around. is there a way of setting the search path for source()? thanks a lot! cheers, andrew. -- Andrew B. Collier Space Physics Group Hermanus Magnetic Observatory Honorary Research Fellow

I have a code junk that produces a figure. In my special case, however, data does not always exist. In cases where data exists, the code chunk is of course trival (case #1), however, what do I do for case # 2 where the data does not exist? I can obviously prevent the code from being executed by checking the existence of the object x, but on the Sweave level I have a static figure chunk. Here an

Dear list, as I started installing R-2.15.0 on a Red Hat 4.5.1-4 as well a Ubuntu 10.04.3 systems. While the basic installation went fine (like the previous R-2.14.2), now I'm having trouble installing almost one third of the additional libraries I want (which installed flawlessly with R-2.14.2), among them RODBC for which I show the message below (obtained on Ubuntu) :