search for: cybaea

Hello! Can you help me? How to order an data.table by values of an column? Per example: Table no initial Categ Perc 468  31.52 351  27.52 0  0.77 234  22.55 117  15.99 table final Categ Perc 0  0.77 117  15.99 234  22.55 351  27.52 468  31.52 Lesandro Veja quais são os assuntos do momento no Yahoo! +Buscados [[alternative HTML version deleted]]

I only recently discovered options("available_packages_filters" = list(add = TRUE, "license/FOSS")) [cf. help("available.packages", package="utils") in R 2.10.0 or later] which goes nicely with my options("checkPackageLicense" = TRUE) [new in R 2.11]. But now I want to purge my library of packages I would not have installed had I known about

Dear all, I've bumped into the: "Error in loadNamespace(name) : there is no package called ?R.utils?" error. I've already read a bit on this ( http://www.cybaea.net/Blogs/Data/A-warning-on-the-R-save-format.html ) but I have a follow-up question. Given a workspace that automatically loads a package that I don't really need/want (e.g. ?R.utils?), how do I identify which object requires this package to load? I would like to avoid loading ?R.utils? every...

Hello all, a friend has a problem with tiff() which I was unable to help about. I searched the error messages to no avail. When he tries: tiff(filename = "FedeWhyDoesntThisBloodyWork.tif", width = 5, height = 5, units = "cm", bg = "white", res = 1200) Error in tiff(filename = "FedeWhyDoesntThisBloodyWork.tif", width = 5, : unable to start device

Hi, everyone: I forget on how to save a result from R as a word document. For example, if I run the linear regression and want to save the result: summary(lm(y~x) in a word file. So I can show it later to my clients. Any idea on how to do this? Thanks a lot, Suyan

I can, after carefully reading about the returned values, see why library("MASS", "MASS", character.only=TRUE) has to chose between loading the package and displaying the help (I thought I had found a nice shortcut), but wouldn't the documentation be better if it said that the two are incompatible and that package= takes precedence over help=? As an aside, is there a

Hello, I plan to use R with my cluster with OpenMPI. I need the packaged 'snow' and 'Rmpi' for that, however, I get an error while downloading and installing them: When I do a: install.packages("Rmpi", dependencies=T) I get this error: checking for mpi.h... no Try to find libmpi.so or libmpich.a checking for main in -lmpi... no libmpi not found.

Dear R developers, I just compiled the latest version of R (2.12.1) and noticed that 'libRblas.so' is missing in the '/x86_64/src/extra/blas' subdirectory of my R-installation. Did I miss ongoing discussions on the Mailinglist about this or might it be a local problem? Thanks for this brilliant software. Best Christian -- Christian Kohler Institute of Functional Genomics ~

Dear List, I am aware this is slightly off-topic, but I am sure there are people who already had the problem and who perhaps solved it. I am running long-lasting model fits using constrOptim command. At work there is a linux computer (Quad Core, debian) on which I already have compiled R and Atlas, in the hope that things will go faster on that machine. Atlas offers the possibility to be

Can one of you give me an R program that displays the benefits an accelerated BLAS in R? Here's why I ask, in case you wonder: In a linux cluster, I've hit some bumps in the road. The worst one by far was that I installed R, then GotoBLAS2 with default settings, and after that, jobs using Rmpi were *really* *really* slow. I mean horrible. If a job took 15 minutes when run by itself,

Must be the heat or something but I can't get my brain into gear and figure out how to get something like if (1) { c <- 1; foo <- function () print(c); } c <- 2 foo() to print 1, not 2. (The real life example is a little more complex, but you get the idea. I don't want the variable c in the function definition, I want its value at that time.) The only thing I have been

If x is a (long) vector and n << length(x), what is a fast way of finding the top-n values of x? Some suggestions (calculating the ratio of the two top values): library("rbenchmark") set.seed(1); x <- runif(1e6, max=1e7); x[1] <- NA; benchmark( replications=20, columns=c("test","elapsed"), order="elapsed" , sort = {a<-sort(x,

Dear List Members,I have 55 data frames, each of which with 272 variables and 267 observations. Some of these variables are blanks but the blanks are not the same for every data frame. I would like to write a procedure in which I import a data frame, see which variables are blank, and delete those variables. My data frames have variables named P1 to P136 and Q1 to Q136. I have a couple of

I am framing this as a question since I would like to know how folks are currently deploying the models they build in R. Say, you want to use the results of your model inside another application in real-time or on-demand, how do you do it? How do you use the decisions you get back from your models? As you may know, a PMML package is available for R that allows for many mining model to

Hello R Help, I'm working in a project with a software that register date and time data in serial time format. This format is used by excel, for exemple. In this format, 40597.3911423958 is 2011/2/23 09:23:15. First part is number os days since 1900/1/1, and second part is a fraction of a day. I need to make this transformation in R, and use it to make some algebrian operations. I found that

Is there a way to convince R to create a character vector without using the quotes? This works ex1 <- c("first","second") but when I try this it doesn't ext <- as.character(c(first,second)) it complains. I have many variables to put into character vectors so dispensing with the quotes would be useful. Thanks Jim =============================== Dr. Jim Maas

Hi all, I have no idea if this question is to easy to be answered, but I?m starting with R. So, here we go. I have a large dataset with a lot of steps a judicial case. A sample is attached. I?d like to do a cluster analysis to try to understand with one is the most usual path followed by this legal cases. After that, I?d like to plot a cluster tree. In the attached sample, the column: -

I know it has been discussed before, but is there anywhere a good summary of (1) why R has the 2^31-1 vector length limit on all platforms (specifically 64-bit, of course) and (b) what would be the effort/implications of changing it? I think I have seen it but I couldn't find it and it does not seem to be in the FAQ. It is *really* annoying me now :( My code is littered with 'if

I have a text file that is UTF-16LE encoded with CRLF line endings and '@' as field separators that I want to read in R on a Linux system. Which would be fine as read.table("foo.txt", file.encoding = "UTF-16LE", sep = "@", ...) *except* that the data may contain the LF character which R treats as end-of-line and then barfs that there are too few elements

I want my local libraries to have priority over the system installed ones, which, as far as I can make out from help(".libPaths"), means they have to come first in that list (it doesn't actually_say_ so, but that seems to be the idea). We have R_LIBS_USER which looks made for specifying where I keep my own libraries. Unfortunately it comes last in .libPaths() [which appears to