similar to: Reading time/date string

I am running 64-bit Ubuntu 8.04 and when I invoke rggobi the interactive graph displays but R crashes. See my sessionInfo() and a short example below. Ggobi and rggobi installed without complaints. Mark > sessionInfo() R version 2.7.0 Patched (2008-05-04 r45620) x86_64-unknown-linux-gnu locale:

I can compile RSPython without difficulty, been when I try to load it, I get the error messages below. Also below are some cryptic warnings I get on R boot (in case these are pertinent) and my sessionInfo(). Any help is appreciated. Thanks, Mark Warning messages: 1: In .updateMethodsInTable(fdef, where, attach) : Couldn't find methods table for "conditional", package

I'm having trouble achieving the results I want using a regular expression. I want to eliminate all characters that fall within square brackets as well as the brackets themselves, returning an "". I'm not sure if it's R's use of double slash escapes or something else that is tripping me up. If I only use one slash I get 1: '\[' is an unrecognized escape in a

I would like to create a 3d scatterplot that is interactive in the sense that I can spin it on its axes to better visualize some PCA results I have. What are the options in R? I've looked at RGL and perhaps it will suffice but it wasn't apparent from the documentation I found. Any demo scripts available for a package that will work? Mark -- Mark W. Kimpel MD ** Neuroinformatics **

Recently I posted to this list with a question about using the Intel 10.1 compilers in building R and one response was basically, "why in the heck would you want to do that?" The answer is that my sysadmin believes that there will be a performance boost with the Intel vs. Gnu compilers on our Linux cluster, of which I am one of many users. Wanting to be a good citizen and use my machine

I'm having trouble with a Bioconductor package, an variable expected in an environment does not seem to be there. As part of my investigation of the problem (most likely on my end) I'd like to list the variables contained in an environment. If you have an environment loaded, lets call it "pkgEnv', how does one find what it does contain? Mark

I have a very long list of strings. Each string actually contains multiple values separated by a semi-colon. I need to turn each string into a vector of the values delimited by the semi-colons. I know I can do this very laboriously by using loops, nchar, and substr, but it is terribly slow. Is there a basic R function that handles this situation? If not, is there perhaps a faster way to do it than

I have recently upgraded to Ubuntu Gutsy and, for the first time, am using a 64-bit installation. After failing miserably to install R from source, not a problem for me in the past with a 32-bit install, I went the route of using the Debian Etch build. This went smoothly, but I am unable to update my numerous R and BioConductor packages, getting non-zero exit status errors on each package. Is

I'm making some plots on the same page and would like to include an overall title instead of individual main titles as they are similar and their x and y axis labels are sufficient to distinguish them. Is there a way to assign an overall "main" to this page of plots? Mark -- Mark W. Kimpel MD ** Neuroinformatics ** Dept. of Psychiatry Indiana University School of Medicine 15032

I am getting some unexpected results from some functions of igraph and it is possible that I am misinterpreting the vertex numbers. Eg., the max betweenness measure seems to be from a vertex that is not connected to a single other vertex. Below if my code snippet: require(igraph) my.graph <- graph.adjacency(adjmatrix = my.adj.matrix, mode=c("undirected")) most.between.vert <-

Where is the link on www.r-project.org or CRAN to download source code for development versions of packages? This is straightforward for BioConductor packages but I can't seem to find it for R packages. Mark -- Mark W. Kimpel MD ** Neuroinformatics ** Dept. of Psychiatry Indiana University School of Medicine 15032 Hunter Court, Westfield, IN 46074 (317) 490-5129 Work, & Mobile &

I have a very long list that I'd like to subset based on a logical value within each element. Example below. I'd like to get just those list elements for further study whose $sig.cor slot is TRUE. In this example, I'd only want element [[2]]. Should be simple, I know. How can I do this? Thanks, Mark > gene.pair.tf.lst [[1]] [[1]]$gene.pair [1] "Lgals1:Pxmp2"

I have fit a model to ~20k different genes and would now like to extract the p-val for one of the effects, again for each individual gene. My model code is: mod <- lm(myResponseMatrix~ Time) Were I to do this with a response vector rather than matrix, the following would work: anovaResult<- anova(mod) With a more complex lm object, such as that generated above, it seems anova is trying to

I just downloaded R-devel and when loaded it immediately segfaults. I'm not sure how much or what sort of diagnostic info and can provide, but below is my build script, my console output, and the output of uname -r. I am currently dependent on the development version of a package, so I'd like to get R-devel up and running if possible. I am sure there is more info I can provide, but before

I am running a very long loop and would like to save intermediate results in case of a system or program crash. Here is the skeleton of what my code would be: for (i in 1:zillion) { results[[i]]<-do.something.function() if (logical.test(i)) {save(results, "results.tmp")} } logical.test would test to see if i/1000 has no remainder. What R function would test that?

I'm trying to use the rgl package on R-2.7.1 running on top of Ubuntu Hardy amd64. using open3d() and plot3d() I get a plot, but it is not interactive. Furthermore, changes to par3d("FOV"=my.new.value) do nothing. I suspect something is wrong with the rendering engine or interface to it. I do have an Nvidia driver installed and compiz works correctly on the desktop. I've

Had some packages fail install so I updated to today's R-beta release. On updating packages the following packages still fail. sessionInfo follows. Mark Warning messages: 1: In install.packages(update[instlib == l, "Package"], l, contriburl = contriburl, : installation of package 'MANOR' had non-zero exit status 2: In install.packages(update[instlib == l,

Just installed the latest R-patched and get the error seen at the end of the output below. Don't know what to make of this but thought I should report it. In general, when installing the latest version of R, should one use R-latest or R-patched? R-latest is stable, but one would assume that R-patched includes the latest bug fixes. Mark mkimpel-m90 ~/R_HOME/R-patched/R-build/bin: ./R R

I've just installed Debian Lenny and RBGL fails compilation with the following errors (sessionInfo() follows). * Installing *source* package 'RBGL' ... untarring boost include tree... ** libs g++ -I/home/mkimpel/R_HOME/R-patched/R-build/lib64/R/include -I/usr/local/include -IboostIncl -fpic -g -O2 -c bbc.cpp -o bbc.o In file included from /usr/include/c++/4.3/ext/hash_set:64,

After some frustrations with installing some R packages from source, usually related to library dependencies or suspected kernel problems (recent one with Ubuntu and Rmpi) I decided to give Debian a try. I'm working through the tutorial found at http://cran.r-project.org/bin/linux/debian/ and I have a couple questions about how packages are best updated between releases of R. Many R packages