Displaying 20 results from an estimated 4000 matches similar to: "getting name from function?"
2009 Jun 26
3
changing default arguments of a function and return the modified function as a result
Dear R-users,
I am trying to develop a function that takes another function as an argument,
changes its default values and returns a list of things, among which the
initial function with its default arguments changed. An example of what i
will like to obtain below:
## initial function
myfun <- function(x, a=19, b=21){ return(a * x + b) }
## this is the function i will like to create
##
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),
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
2009 Mar 27
3
Ploting a matrix
Hi evrybody,
in a matrix consisting of 49 columns, I would like to plot all columns
against the first in 48 different graphs.
Can you help me?
Thank you in advance
Sebastian
--
***************************************************************************************************************
Dipl. Biol. Sebastian Krug
PhD - student
IFM - GEOMAR
Leibniz Institute of Marine Sciences
Research
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,
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 Oct 05
2
"unload" a library while testing?
Hi
I am testing a package, and after I make changes, I have to close R and open
R again to load the new version (same version number) of the package I am
working on. So my question:
is there a function which removes a package, i.e
library(myPackage)
> Package is loaded
unlibrary(myPackage)
> package is not loaded any more
Thanks,
Rainer
--
Rainer M. Krug, PhD (Conservation Ecology,
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 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
2009 Jun 04
4
order() with randomised order in ties?
Hi
I want to use order() to get the order of a vector.
But I would need a different behavior when ties occur: similar to the
parameter ties.method = "random" in the rank() function, I would need
to randomise the ties. Is this possible?
Example:
x <- rep(1:10, 2)
order(x)
[1] 1 11 2 12 3 13 4 14 5 15 6 16 7 17 8 18 9 19 10 20
order(x)
[1] 1 11 2 12 3 13 4 14 5 15
2010 Jul 08
1
x-axis labels for barplot of zoo object
Hi
Let's assume, I have a dataset of 1000 datapoints, which represent daily
recordings of a measurement.
They are stored as a ts object (see example below)
Now I want to represent them as a barplot. I found the barplot in the zoo
package, but I have one problem: the x-axis labels. I would like to have the
x-axis labels as either years only (located at the beginning of the year),
or
2008 Aug 01
1
bug in readRAST6 function in package spgrass6
Hi
if I try to import a raster layer which consists only of NULL values
from grass by using the readRAST6, I get an error message:
> readRAST6("HSericea_seedsDisperse_2007")
ERROR: Invalid value for null (integers only)
Error in readBinGrid(rtmpfl11, colname = vname[i], proj4string = p4,
integer = to_int) :
no such file:
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
2008 Sep 01
1
linebreak in mathematical anotation?
Hi
I am using mathematical anotation to make the labels in a barplot in
italics. as an example (adapted from
http://finzi.psych.upenn.edu/R/Rhelp02a/archive/129808.html):
tt <- c("italic(First~~set)", "italic(Second~~set)", "italic(third~~set")
barplot(1:3, names.arg=parse(text=tt))
But I would like to have it with "set" in a second column, like
tt
2009 Sep 16
1
extracting one element from all list elements
Hi
I have a list which cosists out of dataframes of the same structure. Now I
want to extract one column (let's say column "A") from all dataframes and
have them in a matrix (or dataframe).
At the moment I am doiong:
d <- data.frame(A=runif(100), B=rnorm(100))
theList <- list(e1=d, e2=d, e3=d, e4=d)
f <- sapply(theList, function(l){l$A} )
But I am sure ther is a more
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
2010 Sep 25
2
OT: What distribution is this?
Hi
This is OT, but I need it for my simulation in R.
I have a special case for sampling with replacement: instead of sampling
once and replacing it immediately, I sample n times, and then replace all n
items.
So:
N entities
x samples with replacement
each sample consists of n sub-samples WITHOUT replacement, which are all
replaced before the next sample is drawn
My question is: which
2009 Jun 25
2
stringsAsFactors has no impact in expand.grid()?
Hi
I have the feeling, that the argument stringsAsFactors has no impact in the
function expand.grid:
a <- c("PR", "NC", "A2", "BS")
b <- c(1, 0.5, 0.25, 0.125, 0.0625, 0.03125)
class(expand.grid(css, fscs, stringsAsFactors=FALSE)[[1]])
[1] "factor"
class(expand.grid(css, fscs, stringsAsFactors=TRUE)[[1]])
[1] "factor"
Also, when