similar to: extract all numbers from a string

Hi, If I load 2 packages that have a function with the same name, how do I tell R to run one or the other? (Instead of having R automatically use the first- or last-loaded one, whichever it is. (Which is it, by the way.)) Cheers! Nick -- ==================================================== Nicholas J. Matzke Ph.D. Candidate, Graduate Student Researcher Huelsenbeck Lab Center for

Hi, Is there a way to parse a postscript (*.ps) file with R (or perhaps with some other command-line utility)? E.g., I have a map in postscript format with lots of features, but I just want to extract the coastline and it's coordinates. Any help very much appreciated! Cheers! Nick -- ==================================================== Nicholas J. Matzke Ph.D. Candidate, Graduate

I am dealing with an object that sometimes has a certain attribute, sometimes doesn't. How do I check for this? "exists" doesn't work... ======================= > z=c() > z$a = c("c", "d", "f") > z $a [1] "c" "d" "f" > exists("z") [1] TRUE > exists("z$a") [1] FALSE

Hi, I've written a function which I load with a source command. The function requires a certain library, phangorn, to work. I would like the function to check if phangorn is loaded as a library before running. For some reason, just putting require(phangorn) into the sourced function doesn't do anything. This must be simple, but I can't figure it out! Any help appreciated...

Hi, This can't be hard, but I can't find the solution. I have a 380x380 data frame of numbers. I would like to turn it into a single column so I can do e.g. hist and mean on it without writing my own function. There must be a simple function for this, but I'm stumped -- reshape, dim, etc. don't seem to do it... Help appreciated! Thanks!! Nick --

Hi, Is there an easy way to convert numbers into a form such that they all have the same number of digits? e.g.: "1", "10", and "100" ...become... "0001", "0010", "0100" etc. I ask because I am producing a large number of files that need to sort consistently by filename. Currently I get this kind of sorting: filename1 filename10

Hi, I have a simple task I can't figure out. I'd like to take some measurements I made, e.g.: year (y-axis) 1 2 3 4 5 6 counts (x-axis) 10 10 20 30 40 50 And then, make a barplot with the x-axis ticks (representing the borders between years) between the bars. However, barplot seems to force you to make the x-axis arbitrary categories. I want it to be continuous (as in a

Hi all, Working at the R command line, how do I get strings to display e.g. tab or newline characters as they should be displayed, rather than as e.g. \n or \t? e.g.: > x="\t" > x="\t" > x [1] "\t" > print(x) [1] "\t" -- ==================================================== Nicholas J. Matzke Ph.D. student, Graduate Student Researcher

Hi, Let's say one has just run a command line command that took an hour and produced a huge matrix as an output. However, one forgot to store the output in a variable. Is there a hidden variable somewhere that stores the result, so that one doesn't have to re-run the analysis for an hour? E.g., x <- whatever_the_last_output_was Thanks! Nick --

Hi all! I'm trying to build a simple class, but I'm getting a weird error. E.g. if I do: ========== gregion = setClass("gregion", contains = "data.frame", representation(name = "character", poly.x = "numeric", poly.y = "numeric" )) gregion$name = "North America" ========== Then I get this message: Warning message: In

Hi all, a quick question I couldn't find the answer to in the usual places: Is there a way to turn off line-wrapping in the R console? Or set the line width-before-wrapping manually? Currently it looks like the console linewraps after about 70 characters, this occurs even if I increase the window size. (I want to output some simple tables to screen for students in a computer lab

Hi all, This can't be very hard, but it is sticking me because I am a beginner. Setup: x = rbind(c(0,1,1), c(2,3,1), c(4,5,1)) y = as.matrix(x) rownames(y) = c("a","b","c") colnames(y) = c("a","b","c") ordered_list = c("b", "c", "a") How do I produce a new matrix, z, with the rows and columns both

Hi, I have a script which I source, which evaluates a changing expression call hundreds of times. It works, but it prints to screen each time, which is annoying. There must be simple way to suppress this, or to use a slightly different set of commands, which will be obvious to those wiser than I... Here is a simpler mockup which shows the issue: x = data.frame(rbind(c(1,2,3),c(1,2,3)))

Hi, here's an obscure question someone can hopefully help with. I have some R code that uses stuff from parallel (now a part of the R core in 2.15 I believe), especially clusterApply. However, this seems to cause problems in R.app, and I've seen advice to not use these multicore functions, e.g. doMC, in R.app. So, I want to make this optional. How can have a program check whether

Hi all, I am attempting to install a package called phylobase from source directory. It all seems to work until the end, at which point it looks like the last compile command fails because the line is too long...perhaps because the g++ command line also includes "Loading ~/.Rprofile...", like this: ============================ g++ -arch i386 -dynamiclib

Hi, Until recently I was using the knncat classifier function of knncat on an old computer (2.12, Mac OS X 10.4), and everything worked great. However, now that I have updated to R 2.14.1 (on Mac OS X 10.7), knncat seems broken. Problems: 1. It seems to output verbose output by default, and regardless of whether I put 0 or 1 into the verbose option. 2. It seems to just predict

Hi all, I'm using the R GUI on a Mac. It is easy to produce a number of plots and put them into a Quartz window, and then use Command-left or Command-right to flip between them. However, Quartz seems to hold a maximum of about 15 plots, and then discards anything plotted before that. This is pretty annoying, does anyone know of way to change this default setting? Cheers, Nick --

I figured it out, at least enough to get rgeos's gSimplify function to work, which was my original goal; the stringr problem was with 0.2, however I got stringr 0.5 to install by changing the minimum version in DESCRIPTION from R2.11 to R 2.10. ... Thanks for the help! ############# # This is how I got rgeos to install in R GUI on my Intel Mac OS X 10.4: ############# # stringr

Hi all, I'm on Mac OS X 10.4... So I've got a small python script I need to run from R. However, to get the python script working, I need to have the shell that R calls get settings from my .bash_profile file, which apparently it doesn't currently (the shell R calls uses an older version of python, and also this older version of python can't see various python modules I have

Hi I could not get a custom "shadow:delimiter" for the vfs shadow_copy2 module to work successfully for me with Samba 4.6.2. I did not try previous versions. Based on my testing it seems that an additional line of code is needed in vfs_shadow_copy2.c as shown in the patch below (some comment updates are included too for code readability). Without the below patch, previous versions