Displaying 20 results from an estimated 700 matches similar to: "O-ring statistic in R?"
2005 Dec 09
1
O-ring statistic
Rainer M Krug writes:
> Thorsten Wiegand used in his paper Wiegand T., and K. A. Moloney 2004.
> Rings, circles and null-models for point pattern analysis in ecology.
> Oikos 104: 209-229 a statistic he called O-Ring statistic which is
> similar to Ripley's K, only that it uses rings instead of circles.
>
> http://www.oesa.ufz.de/towi/towi_programita.html#ring
2001 Nov 22
1
fac.design
Dear all,
I am trying to find a R version of the S+ routine fac.design. In the help
of the package conf.design fac.design is listed under "see also". Any clues
as to where (which package) I can find fac.design?
thanks
Steve.
Steven Higgins
Department of Ecological Modelling
UFZ - Centre for Environmental Research Leipzig-Halle
Permoserstrasse 15
D-04318 Leipzig
Germany
Phone:
2006 Sep 22
1
Update to Dillo browser question
Hi
I asked about if there is any way of opening URLs from the help browser
in the same window of the same dillo browser - here is the answer.
Just to reiterate: dillo is for me the perfect browser for the help of R
when you use ?...
Rainer
-------- Original Message --------
Subject: Re: [Dillo-dev] Opening new URL in same instance and -s option
Date: Thu, 21 Sep 2006 21:31:57 -0400
From:
2008 Oct 25
0
increase symbol size in expression - axis label of a plot
Heja,
It took me a while to find a way of implementing normal text as
subscripted text in a expression followed by another expression and more
subscripted text :O)
It looks now as this:
ylab=expression(Delta^"+"~""[paste("my subscripted
text")]~">"~Delta^"+"~""[paste("my subscripted text")])
I use several par commands
2007 Jan 09
2
posthoc tests with ANCOVA
dear all,
I want to perform a posthoc test for my ANCOVA:
a1<-aov(seeds~treatment*length)
With
summary(glht(a1, linfct = mcp(treatment = "Tukey")))
R tells me: "covariate interactions found -- please choose appropriate
contrast"
How do I build these contrasts?
Ideally, I would like to have the posthoc test for the ANCOVA including
a block-effect
2008 Nov 19
1
C++ code from R
Hi
I managed to compile (and use) C code from R, but now I have to use C++ code.
After reading "Writing R extensions", I came up with the following
code, which compiles fine
-------------------
// emdL1_R.cc:
#include <time.h>
#include <stdio.h>
#include "emdL1.h"
extern "C"
{
void emd_L1(
double *H1, int *n1,
double *H2, int *n2,
2006 Dec 01
2
specify point shape for ggplot (equivalent to pch)?
Hi
is it possible to specify the shape of the point to be used in ggplot
(as with pch in plot)? I couldn't find anything in the help.
Thanks
Rainer
--
Rainer M. Krug, Dipl. Phys. (Germany), MSc Conservation
Biology (UCT)
Department of Conservation Ecology and Entomology
University of Stellenbosch
Matieland 7602
South Africa
Tel: +27 - (0)72 808 2975 (w)
Fax: +27 - (0)86 516 2782
Fax:
2005 Dec 20
1
Problems installing R 2.1.1. from rpm (R-base-2.2.0-1.i586.rpm) on SuSE 10
Hi
I have problems installing R 2.1.1. from rpm (R-base-2.2.0-1.i586.rpm)
on SuSE 10. It installs fine, all dependances are OK (at least Yast does
not complain) but when I try to run R, it gives the following error message:
symbol lookup error: /usr/lib/libblas.so.3: undefined symbol:
_gfortran_filename
and R quits.
blas version: 3.0-926
Any help appreciated,
Rainer
--
--
Rainer M.
2003 Feb 19
1
RODBC problems
Hello,
I successfully used RODBC very frequently, but after having updatetd to R 6.0.2, the
current RODBC-Version gives me some problems.
After connecting to my Oracle-Database via odbcConnect("") (or the necessary
information) I receive a much longer output than usual:
RODB Connection 0
Details:
case=nochange
DRIVER={Oracle in OraHome90}
...
with all the details.
Previously,
2005 Aug 22
1
vectors of different length in a matrix
HI!
I?ve 3 vectors of different length (a,b,c) and want to arrange them in a
matrix a,b,c as rows and the figures of these vectors in the columns
(with that matrix i want to calculate a distance between thes vectors -
vegan - vegdist - horn). Is there a possibilty to create such a matrix
and to fill up the missing fields with NA?s automatically????
Thanx
marten winter
--
*Marten Winter*
2008 Oct 09
1
stack or dissolve matrix without double entries
Heja,
I've some bigger distance-matrices like this:
num [1:3231, 1:3231] 0.000 0.176 0.176 0.176 0.176 ...
- attr(*, "dimnames")=List of 2
..$ : chr [1:3231] "A" "B" "C" "D" ...
..$ : chr [1:3231] A" "B" "C" "D" .
I actually want to convert them into a 2 column dataframe like this:
data.frame':
2006 Sep 21
1
transforming factor back to numbers
Hi
I generate a new dataframe by doing:
npl.agg <- aggregate(npl$DensPlants, list(year=npl$year, sim=npl$sim),
mean, na.rm=TRUE )
Now I want to plot it by using
coplot(npl.agg$x ~ npl.agg$year | npl.agg$sim, type="l")
but, as npl.agg$year is seen as a factor, the order of the points on the
x-axis (time axis) does not follow the numerical sorting 1...100, but
rather the text
2006 Apr 28
2
fixme:imm:ImmReleaseContext message - what should I do?
Hi
When I run a program I've written with Delphi7, I get several of the
following messages:
fixme:imm:ImmReleaseContext (0x10020, 0x403b9e80): stub
.
.
.
The program works - but is there anything I can do to avoid these messages?
Rainer
--
Rainer M. Krug, Dipl. Phys. (Germany), MSc Conservation
Biology (UCT)
Department of Conservation Ecology and Entomology
University of Stellenbosch
2006 May 23
1
SmartInspect Personal crashes kwin under Wine 0.9.13
Hi
System:
SuSE 10.0
KDE Release 3.5.2 Level "a"
Wine 0.9.13
SmartInspect Personal 1.1.0.597
I installed SmartInspect Personal 1.1.0.597 under Wine 0.9.13 and it
works perfect. There is only on problem, but it doesn't influence the
usage - but when it happens, I have to logout (if still possible) and
logon again:
If I click on Help - About, the About window shows (it seems to be
2005 Oct 26
1
install.packages under SuSE 10 behind proxy, R 2.2.0 from source
Hi
I installed R 2.2.0 from source and want to use install.packages but it
doesn't work.
http_proxy is set to http://proxy.sun.ac.za:3128
but it still can't connect to the repository.
The mirror is available, I can connect to it via the internet.
Any help welcome,
Rainer
--
NEW TELEPHONE NUMBER
Tel: +27 - (0)72 808 2975 (w)
Rainer M. Krug, Dipl. Phys. (Germany), MSc
2006 Nov 01
1
Compare linear regressios for significant differences of the slopes
Hi
I have (8 measures * 96 groups) = 768 datasets for which I did linear
regressions using lm().
Now I want to compare the slopes for each of the 8 measures in each of
the 96 groups. As I understand , I can not use
> anova(lm1, ..., lm8)
as the lm1 ... lm8 are based on different datasets.
I also read in previous discussions in this list, that I can see if the
slope +- stddev(slope)
2006 Nov 10
1
Combining factors
Hi
I know this is a basic question and I know I have done it before but I
can't find the answer any more.
I have a data set, say:
F1, F2, Value
F1 and F2 are Factors.
I would like to plot
plot(TheCombinationOf(F1, F2), Value)
I remember there was a function for TheCombinationOf() but I don't
remember the name.
I could create a new factor based on F1 and F2, but I would prefer the
2011 Apr 21
2
combining matrices
Heja,
I hope someone is still there to help me:
How can I somehow merge/combine matrices to get such a result:
Matrix A
A B
x1 1 0
x2 1 1
Matrix B
C D
x3 1 0
x4 0 1
Resulting Matrix?
A B C D
x1 1 0 0 0
x2 1 1 0 0
x3 0 0 1 0
x4 0 0 0 1
Does anyone see this probably obvious solution with R how to do this?
Sorry if this question is silly...it's too hot here to think properly ;O)
2005 Dec 15
2
Why is bubbles() creating empty png graphs?
This code below produces empty XXX.png files - if I use plot(), it works
and if I enter the commands
png(filename=fn)
bubble(positions, do.sqrt=FALSE, main=q)
dev.off()
manually, it works as well.
I am lost - any help appreciated.
The weird thing is that it worked before I made some changes... (I don't
have a copy of the working version...).
R version:
platform i686-pc-linux-gnu
arch
2006 Dec 13
2
exporting a table to latex
Hi
I am using the latex() command from the Hmisc package to export table
to latex. For formating of the values, I use the format() function. But
I don't manage to get the format of the values right: I don't want
scientific notation, but if I say scientific=FALSE, I get many digits
after the decimal point which I can not control with digits=... and
nsmall=... in the format command.