Displaying 20 results from an estimated 3000 matches similar to: "Concatenating one character vector into one string"
2007 Sep 20
2
referencing packages?
Hi
I know how to referenc R in a scientific paper - but is there a
standardised way to reference packages?
Thanks
Rainer
--
NEW EMAIL ADDRESS AND ADDRESS:
Rainer.Krug at uct.ac.za
RKrug at sun.ac.za WILL BE DISCONTINUED END OF MARCH
Rainer M. Krug, Dipl. Phys. (Germany), MSc Conservation
Biology (UCT)
Plant Conservation Unit
Department of Botany
University of Cape Town
Rondebosch 7701
2007 Aug 16
6
several plots on several pages
Hi
> version
_
platform i686-pc-linux-gnu
arch i686
os linux-gnu
system i686, linux-gnu
status
major 2
minor 5.1
year 2007
month 06
day 27
svn rev 42083
language R
version.string R version 2.5.1 (2007-06-27)
I want to create a pdf withe three graphs on a page and with two pages:
2007 May 28
1
Where to find "nprq"?
Hi
I am trying to install the package "pheno", but it needs the package
"nprq" by Roger Koenker et al. which I can I find this package? It does
not seem to be on CRAN and googling also doesn't give me an URL - is it
still somewhere available?
Thanks,
Rainer
--
NEW EMAIL ADDRESS AND ADDRESS:
Rainer.Krug at uct.ac.za
RKrug at sun.ac.za WILL BE DISCONTINUED END OF
2007 Mar 05
4
Identifying last record in individual growth data over different time intervalls
Hi
I have a plist t which contains size measurements of individual plants,
identified by the field "plate". It contains, among other, a field
"year" indicating the year in which the individual was measured and the
"height". The number of measurements range from 1 to 4 measurements in
different years.
My problem is that I would need the LAST measurement. I only
2007 Oct 16
3
R-2.6.0 - packages installation through a proxy - not working
Hello everyone,
I run R on Gentoo Linux and this week I upgraded R from 2.5.0 to
2.6.0. With the new build, I have stumbled upon an unpleasant problem:
I can no longer install packages from CRAN through a transparent
proxy. With the previous version, I simply added to
/usr/lib/R/etc/Renviron the following line and it functioned like a
charm:
## Proxy settings
http_proxy="SERVER:3128"
2006 Sep 06
4
problem with putting objects in list
Hi
I use the following code and it stores the results of density() in the
list dr:
dens <- function(run) { density( positions$X[positions$run==run], bw=3,
cut=-2 ) }
dr <- lapply(1:5, dens)
but the results are stored in dr[[i]] and not dr[i], i.e. plot(dr[[1]])
works, but plot([1]) doesn't.
Is there any way that I can store them in dr[i]?
Thanks a lot,
Rainer
--
Rainer M. Krug,
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:
2006 Sep 20
4
Calculating mean together with split
Hi
I have a table called npl containing results of simulations.
It contains about 19000 entries and the structure looks like this:
NoPlants sim run year DensPlants
1 6 lng_cs99_renosterbos 1 4 0.00192
.
.
.
it has 43 different entries for sim and year goes from 1 to 100, and run
from 1 to 5.
I would like to calculate the mean of DensPlants for each
2006 Oct 25
3
simplification of code using stamp?
Hi
I have the following code which I would like to simplify. Id does linear
regressions and returns the r-squares, and the coefficients.
It runs slow, as it is doing the regressions for each - is it possible
to get the values in a dataframe which looks as follow:
expert | xx | seeds | r.squared | slope | intercept
Thanks in advance,
Rainer
library(reshape)
rsqs <- as.data.frame(
2009 Oct 07
2
Second y-axis --- alternative to par(new=
Hi
is there an alternative to par(new), for ading data to a plot for a
different y-axis?
My problem with par(new=TRUE) is, that it re-defines all axis and labels (as
in example 1) and one has to use xlim=... to fix the x-axis.
I am looking for something, which simply resets the y-axis, so that a new
plot() (or points()/lines()) keeps the x-axis, but re-defines the y-axis.
Is there something
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.
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:
2006 Sep 20
5
Beginners manual for emacs and ess
Hi
I heard so much about Emacs and ESS that I decided to try it out - but I
am stuck at the beginning.
Is there anywhere a beginners manual for Emacs & ESS to be used with R?
even M-x S tells me it can't start S-Plus - obviously - but I want it to
start R...
Any help welcome (otherwise I will be stuck with Eclipse and R)
Rainer
--
Rainer M. Krug, Dipl. Phys. (Germany), MSc
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
2011 Mar 10
2
Not sure how to handle hazard in my survival model
Hi R experts :)
I'm trying to carry out a survival model on my data, but I am unsure of
whether it's appropriate or if I should do something specific in regards to
hazard.
My data is time to death by predator where I have 8 prey and one predator in
the setting. This means that two prey can't possibly die at the same time
and I can't quite get my head around how to include this in
2009 Oct 30
2
Ubuntu packages compiled with 2.9
Hi
I upgraded to R 2.10.0, and I encounter a problem with some packages on R,
installed via apt-get..
They are still compiled by 2.9 and give me an warning when I load the
packages. Will these packages be recompiled with R 2.10, or should I rather
switch to self-compiling?
Cheers,
Rainer
--
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology,
UCT), Dipl. Phys.
2009 Dec 11
1
Creating bibtex file of all installed packages?
Hi
is there an easy and fast way, to generate a BibTeX file of all installed /
loaded packages and R?
I know about toBibtex(citation()) to extract the BibTeX for a single
package, but how can I generate a file containg citations for all installed
/ loaded packages?
Cheers,
Rainer
--
NEW GERMAN FAX NUMBER!!!
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology,
UCT),
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)
2009 Oct 08
2
intersection of 2 density curves
Hi,
I would like to find out the coordinates of the intersection points of 2 density curves. I did a search but i didn't get any significant results. I really hope some of you have some ideas. here it is an example:
set.seed(123)
x1 <- rnorm(100, 1, 1)
x2 <- rnorm(100, 0, 1)
d1 <- density(x1)
d2 <- density(x2)
plot(d1, col = 2)
lines(d2, col = 4)
Now i would like to know