similar to: buffering output to the console

Hey all, I learned that using the equals sign "=" to assign objects is generally OK, but will not work in some cases. As I always use "<-" for assignments, I have not encoutered any problems. Could somebody provide an example or explanation, why getting used to "=" is not a good idea? Or is it? Thanks ahead, Berry ------------------------------------- Berry

Hello dear developers, I find myself often having the result of "range" oder "extendrange", which I want to create a sequence with. But "seq" needs two seperate arguments "from" and "two". Could an argument "range" be added? Otherwise I will have to create an object with the range (may come from a longer calculation), index twice from

hi, say I have consecutively numbered objects obj1, obj2, ... in my R workspace. I want to acces one of them inside a function, with the number given as an argument. Where can I find help on how to do that? Somebody must have been trying to do this before... Some keywords to start a search are appreciated as well. Here's an example, I hope it clarifies what I'm trying to do: obj1 <-

Hi all, I'm working on a function that reads online data that is only available to certain IPs. It then writes a subset of the data into a file. So whenever I'm logged in elsewhere or am not connected to the internet, I get an error, and the function is terminated. I want it to rather print a message into the file. Is there any way to test whether a connection can be opened? Analogous to

Hi, i need to recognize itemization structures in strings which follow the format: "digit-digit-dot" like e.g. 1. 2. 19. 211. Given the string " This happened in the 21. century." (the dot behind 21 is used in German instead of 21st) I want know where the dots are but I do not want the 21.-dot to be returned as well. I am not good at regular expressions. How

Dear R Users: I'm a STATA user converting to R, and I'd like to be to do the following. #Assign var_1 and var_2 a value 10->var1 20->var2 #Now I'd like to print the values of var_1 and var_2 by looping through var_1 and var_2 in such a manner: while(y<3){ print(var_y) y+1->y } In STATA, the "y" appended to " var_" is called the local variable and

I noticed that the argument names after the dots argument are not partially matched. foo <- function(one, two, ...){ one + two } > foo(o=1, t=2) [1] 3 foo <- function(one, ..., two){ one + two } > foo(o=1, t=2) Fehler in one + two : 'two' fehlt Can someone explain me the reason for this behavior? THX Mark ???????????????????????????????????? Mark Heckmann Blog:

I have a vector and need to count how many data points fall inside each bin: dat <- rnorm(100) breaks <- -3:3 table((cut(dat, breaks))) (-3,-2] (-2,-1] (-1,0] (0,1] (1,2] (2,3] 3 13 42 30 12 0 if I reverse the breaks vector, the results remains the same: breaks <- rev(breaks) table((cut(dat, breaks))) (-3,-2] (-2,-1] (-1,0] (0,1] (1,2]

Dear list, I came up with a two functions that flatten arbitrary deeply nested lists (as long as they're named; not tested for unnamed) and environments (see attachment; 'flatten_examples.txt' contains some examples). The paradigm is somewhat similar to that implemented in 'unlist()', yet extends it. I would have very much liked to build upon the superfast functionality

I am not too familiar with Cairo and RGtk2 and have the following problem: I have a container with two GTK drawing areas converted into Cairo devices. I know that I can set the current drawing context e.g. using dev.set(). But this is tedious. How can I set the context using the objects da1 or da2? w <- gtkWindow() w$setSizeRequest(400, 400) vbox <- gtkVBox() da1 <- gtkDrawingArea()

I try to overlay a plot inside a gtkDrawingArea with a button (or any other widget). I tried to put both into a gtkFixed container. But this does not work, no printing occurs. Does someone know a solution? What I tried: w <- gtkWindow() w$setSizeRequest(400,400) fx <- gtkFixed() da <- gtkDrawingArea() fx$put(da, 100, 100) asCairoDevice(da) par(mar=c(0,0,0,0)) plot(1:10) btn.1

I run into some problems when trying to convert units using Hershey-Fonts: R chrashes. > library(grid) > label <- "some text" > pushViewport(viewport(gp=gpar(fontfamily="HersheySerif"))) > convertHeight(stringHeight(label), unitTo="mm") *** caught segfault *** address 0xadc838f8, cause 'memory not mapped' Traceback: 1:

I want to assign a default handler to a toolbar button and change the handler later. The addhandlerclicked() method does not apply to a gAction Object, I think... defHandler <- function(h, ...) print("default") w <- gwindow() aTest <- gaction(label="Test", icon="open", handler=defHandler) tblList = list( test = aTest ) toolBar = gtoolbar(tblList,

I have a nested list l like: l <- list(A=c(1,2,3), B=c("a", "b")) l <- list(l,l, list(l,l)) I want the list to be unlisted, but not on the lowest level of each "branch". I want the lowest level of each list branch to remain as it is. So unlist or unlist(rec=F) do not work here as the level of nesting may differ on the elements. The result should look like:

Is there a way to modify the dots-argument? Let's consider I have a function that passes on its ... arguments to another function. For some reason I know, that some elements in ... will cause problems. Can I modify the ... structure somehow, e.g. delete elements? foo <- function(...){ innerFoo <- function(...){ } AT THIS POINT I WANT TO MODIFY THE CONTENT OF ... BEFORE IT IS

Dear list, I have just started to use roxygen and cannot find out how to specify NOT RUN examples. I know that to include R code examples works via the @examples tag followed by the code. Without roxygen, if I want R code not to be run when processing the .Rd files I would include the \dontrun tag \examples{\dontrun{ ... some example R code} } How can I achieve this using roxygen? Thanks Mark

Dear list, When playing around with the "[" method for S4 classes I noticed that it gets called twice in my example. setClass("testClass", representation(a="character")) setMethod("[", signature(x = "testClass", i = "ANY", j="ANY"), function (x, i, j, ..., drop){ print("void function")

I want to plot a multiline annotation including a mathematical expression using grid graphics (grid.text). This works fine for a single line, but the math expression is misplaced when I insert a line break ("\n" escape sequence): grid.text(expression(paste("Some words here\n more ", sigma))) Does someone have an idea how to fix that? TIA! Mark

Hi, how can I omit the box drawn from the starting position to the current position of the mouse when clicking and it over a GTK graphics object? I have seen that in the 'playwith' package the box changes to an arrow when using the 'pan' button. But I do not find the corresponding line in the code to implement that. library(gWidgets)

Is there a blank space escape sequence in R, i.e. something like \sp etc. to produce a blank space? TIA Mark ??????????????????????????????????????? Mark Heckmann Blog: www.markheckmann.de R-Blog: http://ryouready.wordpress.com