similar to: get: problem with environments

Greetings, I am attempting to run a function, which produces a vector and requires two input variables, across two nested factor levels. I can do this using by(X, list(factor1, factor2), function), however I haven't found a simple way to extract the list output into an organized vector form. I can do this using nested loops but it isn't exactly an optimal approach. Thank you

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Hi Luke, Ah - I see - thank you! This at least points me to a way on how to "fix" this. I tried setting the srcref attribute to NULL, but the hash value is still different and so is the serialization. So this looks like it is one difference, but not all of them Even if all differences were identified - it still leaves me with different behavior between interactive and batch-mode,

Hi Gabriel, thanks for your reply - it does solve the problem of my toy function, but does come with some other problems though. a) as.list(f)[[1]] yields an expression, not a function. In order to go the route you are suggesting, I would more likely use "deparse" in order to get the original back b) and more seriously - as.list strips the environment of the function (and thus

Hi (Duncan?), The other day I noticed some characters will cause errors in R CMD CHECK because of parse_Rd(), and AFAIK, these chars include '%', '{' and '}'. For example, note the comments in the example section: %~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~% \name{testfun} \Rdversion{1.1} \alias{testfun} \title{ A Test } \description{ A test } \usage{ testfun() } \value{ NULL }

All, I am not understanding the scoping used in foreach when it is used inside a function. I keep getting "could not find function" errors for functions that are in memory when I try to use foreach within a function call. I have a simple example below. "testFun" is in memory and works when called by foreach directly, but when I place foreach in a function called

Dear All, I have three classes of questions about generating random numbers with different packages (windows xp 32bit R). . 1. Suppose I would like to use package *foreach*, can I use current Sys.time as a seed? Although I can get the time up to1e-6 second precesion, the code below dose not work well on a local machine with two cores. ################# library(foreach) library(snow)

Full_Name: Robert Denham Version: R-2.4.1 OS: Windows Xp Submission from: (NULL) (61.88.57.1) R gui exits without warning when I run a function which has an argument with a default that is not found. This was a result of an error in a function I wrote, but I thought that it should exit more gracefully than it does. Here is an example: testfun <- function(aa=aa) { aa <-

Hi, I posted this question to the regular help list, but it seems to be this is probably a question that is better addressed on r-devel. Sorry for the double posting. I am using hash-values to cache certain results in R. This caching also depends on the hash-value of the function that is being cached (calculated using the digest package). I noticed that computations that should already be cached

Dear all, Why does not the three-dot accept arguments from the parent environment? I am just confused with this error, can someone give me a hint? > rm(list=ls()) > testFun <- function(a, ...) + { + if(a){ + print(a) + }else + { + print(b) + } + } > > myTask <- function(a) + { + b <- 3 + testFun(a, b = b) + } >

Apologees the novice question. Currently climbing up the learning curve of R. Suppose I have the following function and the data.frame: testfun<-function(x=1,y=2) x+y testframe=data.frame(col1=c(1,2),col2=c(3,4)) When evaluating testfun, I want to use the default value for y (which is 2) and for x, I want to feed (one by one) the values in col2 of testframe. How can I achieve this please?

I am trying to use a custom S4 object in my C code and I cannot get the access to its slots working. The following is a toy example, but even this crashes. In R I have: setClass("pd", representation(data="numeric")) x <- new("pd", data=1:5) test <- function(pd.obj) { res <- .C("TestFun", pd.obj) res} test(x) (Of couse

Dear guRus, I'd like to learn how to make a function recognize the name of an object/vector given as argument If I have : testFun <- function(x,y) plot(x,y, main=paste("plot of",names(x),"and",names(y)) ) # this just a simple example ... a1 <- 5:8 b1 <- 9:6 testFun(a1,b1) # Returns the plot, but not the names of the objects/vectors given as arguments, # but

Dear all: There seems to be a problem with scoping, for irf() in vars, when called within a function. Try the following: ----------------------- testfun <- function(lags){ data(Canada) var.2c <- VAR(Canada, p = lags, type = "const") print(var.2c) } testfun(lags=3) ## Everything OK. Now this: testfun2 <- function(lags){ data(Canada) var.2c <- VAR(Canada, p = lags, type =

Thought I should copy the list with Matthieu's response. H -----Original Message----- From: Matthieu Stigler [mailto:matthieu.stigler at gmail.com] Sent: Wednesday, November 05, 2008 8:29 PM To: Horace Tso; rkward-devel at lists.sourceforge.net Subject: Re: [rkward-devel] questions on RKWard some answer only for the third question: do you have the package r-doc-html installed? (on ubuntu

Hi Johannes: Thank you very much. Rkward now works. The only drawback is that I had to install it "by hand": sudo dpkg -i rkward_0.6.5-1~stretchcran.0_amd64.deb rkward-data_0.6.5-1~stretchcran.0_all.deb By default, apt-get installed the Debian repository version (rkward 0.6.5-1+b1 0.6.5-1+b1). Thanks for your contributions to the R-Debian project! Regards. Griera. On Mon, 25

dear all, I'm totally new to R and want to install the RQDA package. It fails because of a dependency with gWidgetsRGtk2, which doesn't install because of the following: > * installing *source* package ?gWidgetsRGtk2? ... ** R ** inst ** preparing package for lazy loading Error in eval(expr, envir, enclos) : konnte Funktion "setRefClass" nicht finden (=could not find

R-Help community, I understand that data.frames can hold elements of type double, string etc but NOT objects (such as a matrix etc). This is not convenient for me in the following situation. I have a function that takes 2 inputs and returns a vector: testfun <- function (x,y) seq(x,y,1) I have a data.frame defined as follows: testframe<-data.frame(xvalues=c(2,3),yvalues=c(4,5)) I would

First, here's the problem I'm working on so you understand the context. I have a data frame of travel activity characteristics with 70,000+ records. These activities are identified by unique chain numbers. (Activities are part of trip chains.) There are 17,500 chains. I use the chain numbers as factors to split various data fields into lists of chain characteristics with each element of

Hello Johannes: I'm sorry, but I still have the same problem with Rkward. After running apt-get update, I still can not find the amd64 version of the Rkward package. I have tried it with the following sources: deb http://cran.r-project.org/bin/linux/debian stretch-cran34/ deb http://chem.uft.uni-bremen.de/ranke/r-cran stretch-cran34/ deb