Displaying 20 results from an estimated 7000 matches similar to: ""unload" a library while testing?"
2011 Mar 11
2
How to get all combinations between two character vectors?
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Hi
I know there is a function - I have used it before - but I always forget
what it is called...
I need the combination of two character vectors, i.e:
x <- c("a", "b")
y <- c("x", "y")
z <- THEFUNCTION(x, y)
z == c("ax", "ay", "bx", "by")
I promise I will
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 Oct 01
4
Concatenating one character vector into one string
Hi
I am sure this is simple - but how can I convert one charecter vector
into one string?
example:
x <- c("This ", "is ", "one ", "sentence.")
should become
"This is one entence"
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.
2020 Sep 22
3
R > 4.0.0 on Debian 9 Stretch?
Hi Dirk,
Thanks for the explamnayion - Debian is running in a VM (and nothing really installed on it) , and I think the easiest is for me just to install Debian 10 and to use that one.
Thanks a lot,
Rainer
> On 22 Sep 2020, at 15:14, Dirk Eddelbuettel <edd at debian.org> wrote:
>
>
> On 22 September 2020 at 14:49, Rainer M Krug wrote:
> | I know this is likely
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
2011 Jul 26
1
Comparing two pdf resulting from density() and identify where significantly smaller or larger?
Hi
this might be a little bit off topic, but here it goes: lets assume I have
the following:
set.seed(13)
dat1 <- rnorm(2000, mean=10, sd=10)
dat2 <- rnorm(100, mean=10, sd=20)
d.all <- density(dat, n=1024)
d.co <- density(x[[v]], , from=min(d.all$x), to=max(d.all$x),
n=1024)
d.diff <- list(
x = d.all$x,
2012 Aug 22
3
Question concerning anova()
Hi
I am comparing four different linear mixed effect models, derived from updating the original one. To
compare these, I want to use anova(). I therefore do the following (not reproducible - just to
illustration purpose!):
dat <- loadSPECIES(SPECIES)
subs <- expression(dead==FALSE & recTreat==FALSE)
feff <- noBefore~pHarv*year # fixed effect in the model
reff <-
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 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
2020 Sep 22
2
R > 4.0.0 on Debian 9 Stretch?
Hi
I know this is likely documented somewhere, but I can?t find it. How can I install R > 4.0.0 on Debian 9 Stretch?
Thanks a lot,
Rainer
--
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany)
Orcid ID: 0000-0002-7490-0066
Department of Evolutionary Biology and Environmental Studies
University of Z?rich
Office Y34-J-74
2012 Aug 21
2
define subset argument for function lm as variable?
Hi
I want to do a series of linear models, and would like to define the input arguments for lm() as
variables. I managed easily to define the formula arguments in a variable, but I also would like to
have the "subset" in a variable. My reasoning is, that I have the subset in the results object.
So I wiould like to add a line like:
subs <- dead==FALSE & recTreat==FALSE
which
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),
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
2012 Jun 22
1
Creating interactive 3D graphs for embedding in pdf not possible in R?
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Hi
Just to be sure: I couldn't find a way of creating an interactive 3d graph which can be embedded
in a pdf - is it correct that this can not be done with R?
Cheers,
Rainer
- --
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys.
(Germany)
Centre of Excellence for Invasion Biology
Stellenbosch
2011 Feb 01
2
How to change size of xlab inplot?
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Hi
I want to increase the size of the text for xlab in the plot command:
plot(1,1, xlab="Label")
I tried cex, cex.caption and others, but none worked. Is there a way of
using cex=2 for the xlab?
Thanks,
Rainer
- --
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation
Biology, UCT), Dipl. Phys. (Germany)
Centre of
2010 Jul 29
2
Replace last element in a vector - elegant solution?
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Hi
I have to replace the last element of a vector with 0, but the length of
x is not known at coding time. So I do the following:
x <- 1:10
x
x[length(x)] <- 0
x
it is working nicely, but I am wondering: is there a more elegant
solution( like tail(x, 1) <- 0 , which does not work)?
Thanks,
Rainer
- --
Rainer M. Krug, PhD (Conservation
2011 Jan 10
2
write.table equivalent for lists?
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Hi
I am writing simulations in R, and quite regularly, I have to save lists
and objects to HDD and load it later again.
So I am wondering: why is there no function to write lists (and S3, S4
objects) onto HDD WITHOUT keeping the name? What I mean is:
For data.frames I can use
x <- data.frame(x = runif(10))
write.table(x, "x.txt)
rm(x)
y
2014 Jan 22
1
Creating Namespace and locking it during runtime?
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Hi
I would like to create a Namespace during runtime, and not during
loading a package.
My reasoning is that I want to be able to store a number of variables
and to "protect them from the user" (might be even myself). The code
will not be in a package, but will be source()ed.
Next step: pass variables from org mode / emacs to R and to
2011 Apr 14
2
Identify period length of time series automatically?
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Hi
I have 10.000 simulations for a sensitivity analysis. I have done a few
sensitivity analysis for different response variables already,
but now, as most of the simulations (if not all) show some cyclic
behaviour, see how the independent input parameter influence the
frequency of the cyclic changes and "how cyclic" they actually are.
So