similar to: weird error: Coercing LHS to a list

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, 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 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 --

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 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, 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

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 all, I have been beating my head against this problem for a bit, but I can't figure it out. I have a series of strings of variable length, and each will have one or more numbers, of varying format. E.g., I might have: tmpstr = "The first number is: 32. Another one is: 32.1. Here's a number in scientific format, 0.3523e10, and another, 0.3523e-10, and a negative,

Hi all, I googled this but no luck. I am using R.app 2.10.1 on Mac OSX 10.4. Here's the problem: When I type at the R.app command line and hit the carriage return "Enter" (right pinky, "Return" on some keyboards), it just adds a blank line. To actually get the command to execute, I have to go all the way over to the number-keypad and hit "Enter" there.

Hi all, I am running R.app on Mac OS X 10.4. I am trying to figure out if there is a .plist file of some sort, or a similar parameter file, that will let me turn on and off e.g. line-wrapping in the R.app GUI console. The only hint I could find online is this: https://stat.ethz.ch/pipermail/r-sig-mac/2010-April/007264.html ...but it doesn't seem to specify where to find the file in

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, 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'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 --

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

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