similar to: Convert a string to a variable name

Hello, I'm not sure how to explain what I'm looking for but essentially I have a test dataset that looks like this: test: V1 1 1 2 1 3 1 4 2 5 2 6 2 7 1 8 1 9 1 10 2 11 2 12 2 And what I want to be able to do is create another column that captures a "grouping" variable that looks like this: test V1 group 1 1 1 2 1 1 3 1 1 4 2 2 5 2

I would like to use the function winDialogString to get input from a user to a program but would like to eliminate the cancel button option and just have the OK button appear. The problem is that if a user enters data then accidently hits Cancel instead of OK, the program may either run incorrectly or quit due to the error of having NULL for a variable. I can think of some unsophisticated ways

Is length(unique()) what you are looking for? Andy > From: Christoph Lehmann > > Hi I have a question concerning aggregation > > (simple demo code S. below) > > I have the data.frame > > id meas date > 1 a 0.637513747 1 > 2 a 0.187710063 2 > 3 a 0.247098459 2 > 4 a 0.306447690 3 > 5 b 0.407573577 2 > 6 b

I have a combined date and time. I would like to separate them out into two columns so I can do things such as take the mean by time across all dates. meas<-runif(435) nTime<-seq(1303975800, 1304757000, 1800) nDateT<-as.POSIXct(nTime, origin="1970-01-01") mat1<-cbind(nDateT,meas) means1<- aggregate(mat1$meas, list(nDateT), mean) This doesn't do anything as each day

I am relatively new to R, and am having a problem with the following snippet of code, and I do not at all understand why it is behaving this way. I am running Windows XP, with R 2.12.1. I copy and paste these 4 lines into the R Console: t<-c("a","b","c") ans<-select.list(t) txtNBS<-winDialogString("NBS","300") choose.files() I

Greetings, fellow R'ers. How can I get this frame in R: ID meas ID.1 meas.1 1 1.1 3 1.2 2 2.1 4 2.2 to look like this (stacking): ID meas 1 1.1 2 2.1 3 1.2 4 2.2 It's not really the reshape function (or is it?) because we can consider the additional columns, viz., ID.1 and meas.1, as independent of ID and meas so it is basically a stacking

Hello all, I want box plots by group to display in order of increasing mean (or median) of each group but can't seem to figure it out and couldn't find anything on R-seek, either. My data looks like this: meas unit sid grade rsprti 1 2.24 1002 99999902 NA 0.8600000 2 3.04 1007 43589520 3 0.9400000 3 4.95 2002 39910470 5 1.5300000 4 2.24 2002 39986280 5

I am very confused about this. I want to convert a string to a name so I can use it to extract an element of a data frame using `$'. Here is my (non-working) code: do.graph <- function (meas) { fn <- paste("a", meas, ".dat", sep='') themeas <- read.table(fn, header=F) ameas <- as.name(paste("a", meas, sep=''))

Hello everybody. In my case, calculating multiple comparisons (Tukey) after lmer produced the following two errors: > sv.mc <- glht(model.sv,linfct=mcp(comp="Tukey")) Error in x$terms : $ operator not defined for this S4 class Error in factor_contrasts(model) : no 'model.matrix' method for 'model' found! What I have done before: > sv.growth <-

I have a dataset where I have missing times (11:00 and 16:00). I would like the outputs to include the missing time so that the final time vector looks like "realt" and has the previous time's value. Ex. If meas at time 15:30 is 0.45, then the meas for time 16:00 will also be 0.45. meas are the measurements and times are the times at which they were taken. meas<-runif(18)

Hi all, I'm using winDialog and winDialogString in scripts running on a XP-machine. Since we're using some Linux-machines (Suse 10.0 and 10.1 on x86) I'm interested in equivalents of the above functions usable under Linux-OS. Are there any? Thanks, Richard -- Richard Müller - Am Spring 9 - D-58802 Balve-Eisborn www.oeko-sorpe.de [[alternative HTML version deleted]]

I have used Sweave a lot the latest year, but never really used any long function calls. If I have code which look like this ------------------------------------------------------------- gof <- benthic.flux(ID="Gulf of Finland", meas.conc=conc, bw.conc=bw.conc, time=times,

Hi, I have constructed a dataframe as follows: Oil <- rep(c("Oil1","Oil2","Oil3"),8) Comp <- rep(rep(c("C1","C2"),c(4,4)),3) Mth <- rep(c("M1","M1","M2","M2"),6) Meas <- rep(c(1,2),12) Result <- rnorm(24,mean=100, sd=5) df <- data.frame(Oil, Comp, Mth, Meas, Result) The same compound

Good afternoon, This is possibly a windows only bug, definitely of comparatively low importance - but for the sake of completeness here we go. I've searched http://bugs.R-project.org/ etc., but can find no mention. For RGui.exe, the CPU usage goes to 100% for certain dialog boxes for the duration that the dialog box is visible, e.g. * check CPU usage is low * On the RGui.exe menu chose

Hello: I am brand new to R, though I've used S-Plus for some time. I've developed some specialized plotting functions that I want to distribute and would like to provide users with a dialogbox for entering input arguments. Has anyone developed functions in R for displaying dialogboxes that could accept multiple inputs? I found winDialog and winDialogString, but these only accept and

From: Gabor Grothendieck > On Apr 11, 2005 11:28 AM, Martin Maechler <maechler at stat.math.ethz.ch> wrote: > > > > If you use R 2.1.0 beta (which you should consider seriously as > > a good netizen ;-), this is as simple as > > > > > RSiteSearch("String manipulation---mixed case") > > A search query has been submitted to

This probably should go to Duncan Murdoch ... The following reliably crashes R Version 1.9.1 on Win2000: winDialogString(paste(sample(letters,500,rep=TRUE), collapse=""),default="") (presumably because of the too lengthy message string; but what is the length limit?). -- Bert Gunter Non-Clinical Biostatistics Genentech MS: 240B Phone: 650-467-7374 "The business of

Hi. With the previous version of R, it was possible to execute the function 'select.list()' in BATCH mode. In this way, I could write my R code in a .R file and execute that with a double click on a .bat file, that contain the instruction tu run my R code in batch mode (R CMD BATCH myRcode.R). When I do that, a windows appear and I just have to select an item from the list. Now I've

Hello, I have a problem with readLines. I have a data file with many informations added with a different number of measurments (example at the end). I only want to read the measurments witch start with "START OF HEIGHT DATA" and end with "END OF HEIGHT DATA". The difficulty is: -I want to read the file with "readLines", because the measurments have letters and

Hola que tal alguien de ustedes me podría auxiliar, lo que pasa es que estoy tratando de hacer un programa en R utilizando la siguiente tabla: x<1 km x>1km Estabilidad a c d f c d f A 213 440.8 1.94 9.27 459.70 2.094 -9.6 B 156 106.6 1.15 3.30 108.20 1.098 2.0 C 104 61.0 0.91 0.00 61.00 0.911 0.0 D 68 33.2 0.73 -1.70 44.50 0.516 -13.0 E 51 22.8 0.68 -1.30 55.40 0.305