similar to: How to import data as numeric array?

Hi all, I created environment "mytoolbox" by : mytoolbox <- new.env(parent=baseenv()) Is there anyway I put it in the search path ? If you need some background : In a project, I often write some small functions, and load them into my workspace directly, so when I list the objects with ls(), it looks pretty messy. So I am wondering if it is possible to creat an

Hi, I am writing a function and need to pass a function expression as an argument, for instance, myfun <- function( express) { x<- c(1,2,3) y<-express } if I call the above function by myfun( x*2 ), I get 2 as the result, instead of 2,4,6 , could someone help me to fix this problem ? Furthermore, is that

Hi, I am trying to output a R data set for use in WinBugs, I used dput(list(x=rnorm(100),N=100),file="bug.dat") But I can't get the intended format: list(x=c(.......),N=100), instead, I got something like this (copied the first two lines): [00000000]???73?74?72?75??63?74?75?72??65?28?6C?69??73?74?28?78???? structure(list(x

Hi, I would like to assign a value to a member b of the list a in position 3, by calling: assign( target, 2.34, 3) My question is what the "target" should be. I tried target <- paste("a", $, "b") and something else, but haven't got the right answer yet. BTW, if I attached a list named

Hi, I just got a quick question here, when I install a new version of R , is there an easy to keep the installed R packages ? Thanks a lot for any help. tong

Hi All, I have been struggling to figure out how to compile c codes for R use. I am using Win XP + Cygwin + R binaries. After I followed all the instructions in " Building R for Windows" from Murdoch's website, I tried to Run something like : R CMD SHLIB C:\R\test.c , but still didn't get any output. My first question is, does this mean I already did

Hi All, I have been struggling to figure out how to compile c codes for R use. I am using Win XP + Cygwin + R binaries. After I followed all the instructions in " Building R for Windows" from Murdoch's website, I tried to Run something like : R CMD SHLIB C:\R\test.c , but still didn't get any output. My first question is, does this mean I already did

Hi all, I have a three dimensional array with the corresponding dimension names. I would like to subset the array according to the dimension names. For example, suppose I want to extract the values corresponding to A=20, B=10, C=0. I know I can do: P2[dimnames(P2)$A==20, dimnames(P2)$B==10, dimnames(P2)$C==0] But is there a better way for doing this? Thanks for your help! Hanna >

I would like to reference array dimensions by name in an apply and a summary function. For example: apply(x, "workers", sum) Is there a better way to do this than creating a new attribute for the array and then creating new methods for apply and summary? I don't want to name the individual elements of each dimension (such as with dimnames) but rather name the dimensions. Thanks

So as often there is more to it than you first think. Let's consider this an RFC (for experienced long time R users) : >>>>> Martin Maechler <maechler at stat.math.ethz.ch> >>>>> on Wed, 9 Aug 2017 10:45:56 +0200 writes: >>>>> William Dunlap via R-devel <r-devel at r-project.org> >>>>> on Tue, 8 Aug 2017 11:59:45

Hi you guys: I have been wondering if there is any way to change the labeling in plot.ts( ), for example , if I plot two sequences, i always got y labels as "series1", "series2", I tried to use ylab=c((expression(mu_1)),(expression(mu_2))), but it doesn't work. thanks in advance for any help best.

Hi, I have a data set (data frame) describing some features of the students in a high school in the following format: Stu ID Year feature 1 feature 2 ............. 1001 1990 1001 1991 1001 1992 1002 1990 1002 1991 1002 1992 Some features of a few of these students are missing, I would like to

Hi all, I met a problem while using the debug package, I have the following program: mainfun<- function(){ beta<-1 result<-subfun(beta+x) } subfun<-function(expr){ y <- eval(expr, envir=list(x=c(1,2)),enclos = parent.frame()) return(y) } I have no problem using this program without calling the debug

Hi, I just realized that in Matlab, as long as memory is pre-allocated, doing for-loop doesn't cost more time than doing things in vector form. But it seems in R, it still cost a lot to do for-loop. Is there any improvement in R that I missed. Thanks a lot. Merry Xmas Everyone !

Have you tried P2["20", "10", "0"] ? Jean On Thu, Jun 1, 2017 at 3:10 PM, li li <hannah.hlx at gmail.com> wrote: > Hi all, > I have a three dimensional array with the corresponding dimension names. > I would like to subset the array according to the dimension names. For > example, > suppose I want to extract the values corresponding to A=20,

Hello, I did send this message to r-help and got no reply, no I am resubmitting here in case this was a bit too specific for the other list. Many thanks, Iago From: Iago Mosqueira <imosqueira@suk.azti.es> To: r-help@stat.math.ethz.ch Subject: Subsetting using dimnames on S4 array-based class

Hi: How can I extract the dimension-names of a pre-defined element in a multidimensional array in R ? A toy example is provided below: I have a 4-dimensional array with each dimension having certain length. In the below example, "mydatastructure" explains the structure of my data. mydatastructure = array(0, dim=c(length(b),length(z),length(x),length(d)), dimnames=list(b,z,x,d)) where,

Dear all, Possibly a rudimentary question, however any help is greatly appreciated. I am sorting a large matrix into an array of dim(p(i),q,3). I put each entry into a corresponding matrix (1 of the 3) based on some criteria. I figure this will assist me in condensing code as I can loop through the 3rd dimension of the array instead of generating 3 separate matrices and using the same block of

Hello, I'm working with an array; I'm trying to make it so that an array of dim(42,2,2) has names whose length corresponds to that of the array, and am hoping someone with experience with this can see what I'm not doing correctly: data11 = array(0,c(41,2,2)) y = lsoda(x0,times,fhn$fn.ode,pars)#This is make.fhn() from colloc infer package# y = y[,2:3]

Should arithmetic operations work on zero-column data.frames (returning a zero-column data.frame with the same number of rows as the data.frame argument(s))? Currently we get: > 1 + data.frame(row.names=c("A","B")) Error in data.frame(value, row.names = rn, check.names = FALSE, check.rows = FALSE) : row names supplied are of the wrong length >