Displaying 20 results from an estimated 7000 matches similar to: "Fwd: Re: read.table (Error in file(file, "r") : unable to open connection)"
2006 May 09
2
read.table (Error in file(file, "r") : unable to open connection)
G?day,
I am trying to read in a table and am getting an error message stating that R is unable to open a connection to the file.
? Avonvegen<- read.table("Y:\Study Sites\Avon\nonspatial\datafiles\archive\Avon_VegEnh.dat ", sep=",", na.string="-9999", header=TRUE)
Error in file(file, "r") : unable to open connection
In addition: Warning message:
cannot
2008 May 14
2
basename/dirname produce incorrect results
The incorrect result incurs when the file path contains Chinese character.
It seems that dirname/basename action on unit of byte instead of char, so
the result in the following example is half of what is expected.
> g<-"d:\\$BG!2L4^M-CfJ8(B\\$BG!2L4^M-CfJ8(B.txt"
> dirname(g)
[1] "d:/$BG!2L4^(B"
> basename(g)
[1] "$BG!2L4^M-(B"
--
HUANG Ronggui,
2008 Dec 11
1
Sorting problem
Sys.setlocale(,"C")
x1 <- as.character(date()) # I use date to record the time, and save
it to sqlite database, to it converted to character
x1_2 <- strptime(x1, "%a %b %d %H:%M:%S %Y")
x2 <- as.character(date())
x2_2 <- strptime(x2, "%a %b %d %H:%M:%S %Y")
X<-c(x1_2,x2_2)
order(X) ## I want to get the permutation other than the sorted vector.
##
2005 Nov 27
2
multilevel models and sample size
It is not a pure R question,but I hope some one can give me advices.
I want to use analysis my data with the multilevel model.The data has 2 levels---- the second level has 52 units and each second level unit has 19-23 units.I think the sample size is quite small,but just now I can't make the sample size much bigger.So I want to ask if I use the multilevel model to analysis the data set,will
2011 Jan 12
1
how to change strip text of effect plot
Dear r heper,
How can I change the strip text, for example (16,23] in the following
example, to other more informative text such as "high level" on the
fly?
library(effects)
Cowles$ex2 <- cut(Cowles$extraversion,3)
mod.cowles <- glm(volunteer ~ sex+neuroticism*ex2,data=Cowles, family=binomial)
eff.cowles <- allEffects(mod.cowles)
plot(eff.cowles,
2008 Jan 21
3
Need suggestions about GUI
What I want to do is:
1, creat a text box, insert text into that box.
2, select chunk of of the text by mouse, and link it to a lable. so I would
like a way to get that chunk of text.
Can I do such job with tcltk? Any relavant tutorial materials?
Thanks
--
HUANG Ronggui
Bachelor of Social Work, Fudan University, China
Master of sociology, Fudan University, China
Ph.D. Student , CityU of
2008 Jun 07
1
Problem of installing Matrix
[wincent at PC-BSD]export MAKE=gmake
[wincent at PC-BSD]sudo R
.....
> install.packages("Matrix")
--- Please select a CRAN mirror for use in this session ---
Loading Tcl/Tk interface ... done
trying URL 'http://bibs.snu.ac.kr/R/src/contrib/Matrix_0.999375-9.tar.gz'
Content type 'application/x-gzip' length 1483674 bytes (1.4 Mb)
opened URL
2008 Dec 12
1
How to mimic select.list using RGtk2/gWidgetsRGtk2?
I want to write a function mimic the function of select.list(), here
is my preliminary version.
select <- function(x,multiple=TRUE,...){
ans<-new.env()
g <- gwindow(title=title,wid=200,heigh=500)
x1<-ggroup(FALSE,con=g)
x2<-gtable(x,multiple=multiple,con=x1,expand=TRUE)
gbutton("OK",con=x1,handler=function(h,...){
value <- svalue(x2)
if (length(value)==0)
2007 May 19
2
What's wrong with my code ?
I try to code the ULS factor analysis descrbied in
ftp://ftp.spss.com/pub/spss/statistics/spss/algorithms/ factor.pdf
# see PP5-6
factanal.fit.uls <- function(cmat, factors, start=NULL, lower = 0.005,
control = NULL, ...)
{
FAfn <- function(Psi, S, q)
{
Sstar <- S - diag(Psi)
E <- eigen(Sstar, symmetric = TRUE, only.values = TRUE)
e <- E$values[-(1:q)]
e <-
2007 Jan 19
1
Where can I get the latex format manual?
In www.r-project.org I can find html and pdf format, and the
R-x.x-x/doc/manual has texinfo format only.
I can not find latex format manual. Am I miss something? Thanks for your hints.
--
Ronggui Huang
Department of Sociology
Fudan University, Shanghai, China
??????
????????????????
2011 Apr 26
1
rJava Help
I believe this posting is placed, and I take the liberty to re-direct
to the r-help mailing list.
Regards,
Ronggui
On 26 April 2011 12:33, <gopala at mail.gvsu.edu> wrote:
> ?I am trying to create a web user interface using RApache. I need to install rJava packge but I am getting the following error message
>
> RApache Warning/Error!!!
>
> Error : .onLoad failed in
2009 May 23
1
Draw a rectangle on top of an image using RGtk2?
Dear all,
I use gtkImageFromFile to display an image. Then I want to do some
gsignal to handle mouse event. I click the mouse and move a another
position and release. I can get the position of the firs click and the
release position, then I would to draw a rectangle to display the
region I have selected. I need some hints on what functions should I
look for. I tried to google but don't know
2009 Oct 20
1
RGtk2:::gdkColorToString throws an error
Dear all,
I try to use RGtk2:::gdkColorToString, but it throws an error:
Error in .RGtkCall("S_gdk_color_to_string", object, PACKAGE = "RGtk2") :
gdk_color_to_string exists only in Gdk >= 2.12.0
I know what it means, but don't know to solve this problem because I
don't know where I can download the referred gdk library. Any
information? Thank you.
--
HUANG
2009 May 29
1
GTK Tooltips under Linux
Dear all,
I want to set tool-tips for a gtkButton. I use the following code
which works under Windows. However, it doesn't work under Linux. Any
hints? Thanks.
library(RGtk2)
b<-gtkButtonNewWithLabel("OK")
gtkTooltips()$setTip(b,"Memo for a Button.")
gw <- gtkWindow(show=F)
gw$Add(b)
gw$Show()
> sessionInfo()
R version 2.8.0 Patched (2008-12-10 r47137)
2008 May 12
1
Insert a recorde into a table using SQL
Dear list,
I want to insert a recorde into a SQLite table by dbGetQuery(), but
there is a problem when the value contains quotation mark.
> dd<-data.frame(txt=c("having both ' and \" in character.","OK"))
> library(RSQLite)
Loading required package: DBI
> con<-dbConnect(dbDriver("SQLite"),":memory:")
>
2007 May 27
2
Question about "evalq"
The help page of eval says: The 'evalq' form is equivalent to
'eval(quote(expr), ...)'. But the following is not equivalent. Can
anyone give me some explaination? Thanks very much.
> f1 <- function(x,digits=5) lapply(x, f2)
> f2 <- function(x) eval(quote(print(x+1,digits=digits)),list(x=x),parent.frame(2))
> f1(list(x1=1))
[1] 2
$x1
[1] 2
>
> f1 <-
2006 Nov 23
2
writing character to a file in UTF-8
Dear lister,
I would like to now if there a universal way to writing a character
vector to a file in UTF-8 encoding? By " universal", I mean a way
which works under Linux, Windows and Mac.
Thanks in advance!
--
Ronggui Huang
Department of Sociology
Fudan University, Shanghai, China
2007 Jun 15
2
method of rpart when response variable is binary?
Dear all,
I would like to model the relationship between y and x. y is binary
variable, and x is a count variable which may be possion-distribution.
I think it is better to divide x into intervals and change it to a
factor before calling glm(y~x,data=dat,family=binomail).
I try to use rpart. As y is binary, I use "class" method and get the
following result.
>
2005 Oct 15
2
how to import such data to R?
the data file has such structure:
1992 6245 49 . . 20 1
0 0 8.739536 0 . . .
. . . . . "alabama"
. 0 .
1993 7677 58 . . 15 1
0 0
2008 Nov 24
1
RQDA-0.1.5 is released
RDQA is a package for Qualitative Data Analysis built upon R. It works
both on the Windows and Linux/FreeBSD platforms. RQDA is an
easy-to-use tool to assist in the analysis of textual data. At the
present, it supports only plain text format data. All the information
is stored in SQLite database via the R package of RSQLite. The GUI is
based on RGtk2, via the aid of gWidgetsRGtk2. It includes a