similar to: Names of data frame columns in an apply

After some fiddling around with the tapply command, I discovered that the factors (the INDEX argument) given to tapply must be specified in fastest-cycling first order. The following code shows how I discovered my error: (R version 1.2.1) -o-o-o-o-o- x <- as.data.frame(list(data=c(-9,0,3,1,-9,1,0,-9,0,3,1,-9,1,0), subj=c(rep(1,7),rep(2,7)),

I'm shure that this kind of question is asked not for the fist time, but i would be glad if someone of you could help me out I have a data.frame like this : subjnr group block data 1 33 1 1 564.476 2 33 1 1 289.185 3 33 1 1 483.372 4 33 1 1 1461.260 5 33 1 1 315.353 6 33 1 1 351.870 7 33

Hedderik van Rijn <hedderik@cmu.edu> writes: > If the second argument to unsplit is not a simple vector (but a "list > containing multiple lists"), the function seems to have some problems. > > Given a slight modification of the examples in help(split): > > > xg <- split(x,list(g1=g,g2=g)) > > unsplit(xg,list(g1=g,g2=g)) > [1] -0.7877109

even for people who didn't like the outcome of the US elections this year, it must have been a joy to see all the nice (and not so nice) graphs that were shown. As an exercise, I recreated the map shown on the NY-Times website [ http://www.nytimes.com/packages/khtml/2004/11/03/politics/ 20041103_px_ELECT_GRAPHIC.html ] If you're interested,

Hi, first of all, I would like to take this opportunity to thank all of you "answer guys" for giving such detailed answers. I think I've learned about as much from all these answers as from the different S/R documents I've read so far. Anyway, I ran into a incompatability between S and R, that is, R does not know the "ticks=T/F" argument to functions like axis and

A couple of days ago I posted some elisp code that asks the user for confirmation before deleting a process buffer, e.g. the *R* buffer. However, this code was only evaluated if a buffer was killed by means of [C-x k]. The following code does not need to be bound to a particular key, it's internally called by kill-buffer. (Also works if buffer is deleted in other ways, e.g., [C-x C-c].)

A couple of months ago, probably using an older version of R, R used to run the following code just fine: library("foreign") data.exp1 <- as.data.frame(read.spss("dataDef.sav")) Issuing the same commands now (after starting R using --vanilla), gives me the following behavior: > library("foreign") > x <- read.spss("dataDef.sav") Error

Dear all, I've got a quite large dataframe (stor) with rows subject and rt (reaction time). I would like to split the reaction times per subject into 6 bins of equal size. Right now, I'm using the following code: bindata <- function(rt) { bindata <- rep(-1,length(rt)) binwidth <- length(rt)/6 bindata[order(rt)[(0*binwidth)+1:(1*binwidth)]] <- 1

I'm trying to get Sweave running for automatic report generation, and it seems to run fine when just using verbatim output. However, I've ran into a problem with xtable. I would like to print the following matrix using xtable: > dim(counts) [1] 19 15 All columns are filled with real/integer numbers > 0 and < 1000. Just typing xtable(counts) gives correct LaTeX output, but

I use AfterStep on Linux. I made an R.xpm file (attached) and put this icon in the "wharf". To invoke R I click on the R icon. I did not find an offical R.xpm, and so I am submitting this one for your collective consideration.... The idea behind the icon is that it looks like a scatterplot, which is "statistical". My main beefs with my R.xpm are that it doesn't have a

I have a data file from which I need to read portions of data but data location/quantity can change from file to file. I wrote some code and have a working solution but it seems wasteful to have to do it this way. Here's the contrived incomplete code. datalines <- readLines(datafile.pathname) # marker will appear on line preceding and following # actual data offset.data

Hedderik van Rijn <hedderik@cmu.edu> writes: > > Thanks for pointing this out. I think your code should work, although > > I'm slightly uneasy about actually modifying f, so how about > > Just curious, why are you uneasy about that? Does it have side effects? It is largely due superstition, but if you change f before calling split<-() you have split() and

Hi guys I have tried compiling this attached code, I made all the buffers 320, there is no trace of a 160 buffer, but I get a " SpeexEncoder requires 320 samples to process a Frame, not 160" error. Maybe there's something I'm missing, here's my code: import java.io.IOException; import java.io.FileOutputStream; import java.io.File; import

Thanks Ross, So you think that I can just numerically add up the appropriate Bytes from each of the streams? If that's so would we be better add first, then to normalise after the additon, so the final byte size is the same as the individual ones, what ever that may be. -------- Original Message -------- Subject: RE: [Vorbis] Mixing inputstreams. Date: Tue, 3 Mar 2009 01:12:35 +1300

I am having trouble with paste function. I dont know how to proceed. I tried many options but i failed miserably. I am using a variable f1 to assign a string as below: f1=dataLine[locAffyProbeID]; ( the value of f1 is 244901_at ) Then I am using the paste function paste("set @g1=", f1); instead of getting set at g1=244901_at, I am getting set @g1=23. I am not able to understand

I would be very thankfull for such a solution, too .... "R.E. Darnell" wrote: > > Would introducing a "Are you sure?" question after kill the *R* ( or > whatever) buffer with a hasty C-x k be a popular default > "feature". How can I include this for my own use? > > Thanks > > Ross Darnell --

Hi: How do I find average across three columns such as weight1, weight2, weight3 (20 people, each person has three different measures)? They have NA's also. Thanks Tom, Univ of Pittsburgh, ttrut at yahoo.com

Hello, I am hoping you can help me with a question concerning kmeans clustering in R. I am working with the following data-set (abbreviated): BMW Ford Infiniti Jeep Lexus Chrysler Mercedes Saab Porsche Volvo [1,] 6 8 2 8 4 5 4 4 7 7 [2,] 8 7 4 6 4 1 6 7 8 5 [3,] 8 2 4

Ulrich B. Staudinger wrote: > Hi, > > i have: > > public void run(){ > try{ > System.out.println("Opening > mic"); // AudioInput > ai=new AudioInput(t); > // ai.start(); > if(t.input==null){ > AudioFormat format = new

Thanks to Martin Maechler, Douglas Bates, Peter Dalgaard, and Hedderik van Rijn for pointing out the problem is with the color resource demands of the two applications and for their suggested possible solutions. A 24 bit monitor would be ideal and maybe someday I'll have the $$$ to upgrade. "netscape -install" works with the attendant flashing screen color changes from window to