Displaying 20 results from an estimated 8000 matches similar to: "Simultaneous Comparison of Factor Structures"
2009 Jun 08
3
using regular expressions to retrieve a digit-digit-dot structure from a string
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
2004 Nov 23
1
File Creation Error on an SMB Volume
> Hi folks,
> My SMB server is a Helios Ethershare 3.1 on a Tru64 Alpha machine.
> We are now integrating more and more gentoo-Linux Servers. These are the
> SMB Clients.
>
> On Obelix (one of our gentoo-Servers) I can mount the SMB Volume from the
> Ethershare Server.
> obelix nc4smb # whoami
> root
> obelix # mount -t smbfs -o username=m.heckmann
2009 May 22
1
Confirmatory factor analysis problems using sem package (works in Amos)
Hello all,
I'm trying to replicate a confirmatory factor analysis done in Amos. The
idea is to compare a one-factor and a two-factor model. I get the following
warning message when I run either model:
"Could not compute QR decomposition of Hessian.
Optimization probably did not converge."
I have no idea what to do here. I believe posters reported the same
problem. It seems
2010 Jan 01
2
changing a list element's name during execution in lapply - possible?
Happy New Year, all!
I want to do calculations on each element of a list l, but i want the
returned list element to be named differently after the calculation.
Is it possible to do the renaming somehow within the lapply call?
l <- list(a=NA, b=NA)
lapply(l, function(x) {names(x) <- "new name"; return(x) })
This does not work, any ideas?
TIA
2011 Apr 25
4
blank space escape sequence in R?
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
2009 Dec 27
2
RGtk2 / gWidgets - addHandlerClicked Problem
In The following code, the table handler is executed twice when the
button is pressed (from the 2nd pressing on).
I want it to be executed only once. Does someone know, why this
happens and how I can change it?
library(gWidgets)
w <- gwindow()
b <- gbutton("press", cont=w)
tbl <- gtable(1:10, cont=w)
addhandlerclicked(b, handler=function(h, ...){
2009 Dec 02
2
Reordering the results from table(cut()) by break argument
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]
2012 Mar 08
3
"figure margins too large" in RGtk2 drawing area as cairo device - why?
When using a gtkDrawingArea as a Cairo device I very often encounter the error: "figure margins too large"
Even for the below "getting started" example from http://www.ggobi.org/rgtk2/ this is the case.
> win = gtkWindow()
> da = gtkDrawingArea()
> win$add(da)
> asCairoDevice(da)
[1] TRUE
> plot(1:10)
Fehler in plot.new() : Grafikr?nder zu gro?
>
Also
2011 Oct 24
2
splitting a string into words preserving blanks (using regex)
I would like to split a string into words at its blanks but also to preserve all blanks.
Example:
c(" some words to split ")
should become
c(" ", "some", " ", " words", " ", "to" , " ", "split", " ")
I was not able to achieve this via strsplit() .
But I am not familiar with regular
2012 Mar 05
2
no partial matching of argument names after dots argument - why?
I noticed that the argument names after the dots argument are not partially matched.
foo <- function(one, two, ...){
one + two
}
> foo(o=1, t=2)
[1] 3
foo <- function(one, ..., two){
one + two
}
> foo(o=1, t=2)
Fehler in one + two : 'two' fehlt
Can someone explain me the reason for this behavior?
THX
Mark
????????????????????????????????????
Mark Heckmann
Blog:
2008 Dec 29
4
Merge or combine data frames with missing columns
Hi R-experts,
suppose I have a list with containing data frame elements:
[[1]]
(Intercept) y1 y2 y3 y4
-6.64 0.761 0.383 0.775 0.163
[[2]]
(Intercept) y2 y3
-3.858 0.854 0.834
Now I want to put them into ONE dataframe like this:
(Intercept) y1
2012 Mar 05
2
changing the drawing context using Cairo and RGtk2
I am not too familiar with Cairo and RGtk2 and have the following problem:
I have a container with two GTK drawing areas converted into Cairo devices.
I know that I can set the current drawing context e.g. using dev.set().
But this is tedious. How can I set the context using the objects da1 or da2?
w <- gtkWindow()
w$setSizeRequest(400, 400)
vbox <- gtkVBox()
da1 <- gtkDrawingArea()
2011 Dec 22
1
RGtk2: How to overlay a gtkDrawingArea with a button or any other widget?
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
2009 Dec 27
1
gWidgets / RGtk2 - how to change a handler from a toolbar?
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,
2010 Jan 08
1
how to flatten a list to the same level?
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:
2010 Dec 08
2
S4 "["-method called twice - why?
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")
2011 Sep 08
1
problem with math expressions in grid graphics when using line breaks (\n)
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
2011 Dec 18
1
gWidgets: how to remove that is box drawn when moving the mouse with pressed button
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)
2012 Apr 07
2
assigment operator question
Hello,
using the <<- assignment operator I do not understand why the following does not work.
l <<- list()
l
list()
l$arg1 <<- "test"
error in l$arg1 <<- "test" : Objekt 'l' not found
?"<<-" says: "The operators <<- and ->> cause a search to made through the environment for an existing definition of the
2010 Nov 20
3
how to store package options over sessions?
Hi,
I posted this a week ago on r-help but did not get an answer. So I hope that someone here can help me:
I want to define some options for my package the user may change.
It would be convenient if the changes could be saved when terminating
an R session and recovered automatically on the next package load.
Is that possible and if yes, is the standard way to implement this?
Thanks,
Mark