On Thu, Dec 31, 2009 at 11:27 PM, Peng Yu pengyu...@gmail.com wrote:
I don't see where describes the implementation of '[]'.
For example, if x is a matrix or a data.frame, how the lookup of
'colname1' is x[, 'colname1'] executed. Does R perform a lookup in the
a hash of the colnames? Is the
A lot of R packages are now effectively maintained by several people
and so use sites like R-forge or google code for development. This
means the best way to report bugs or problems with these packages is
via the development site's bug tracking rather than emailing the
maintainer. Could we agree
On Thu, Nov 26, 2009 at 1:39 PM, Duncan Murdoch murd...@stats.uwo.ca wrote:
This sounds like a good idea, though I would add a package parameter to
the bug.report() function, rather than creating a new function.
I'm sure when I did help.search(bug) and help.search(report) this
morning I didn't
On Mon, Nov 23, 2009 at 10:04 AM, Charlotte Maia mai...@gmail.com wrote:
Hi all,
I'm seeking feedback (good, bad or indifferent) in regards to
developing (further) a new class system for R, that uses encapsulated
class definitions (i.e. the method definitions are literally inside
the body of
On Fri, Sep 4, 2009 at 10:44 PM, rudjerrkoen...@uiuc.edu wrote:
Writing R extensions says:
In addition to the help files in Rd format, R packages allow the inclusion
of documents in arbitrary other formats. The standard location for these is
subdirectory inst/doc of a source package, the
On Wed, Sep 2, 2009 at 2:49 AM, Pin Tian Ngpin...@nau.edu wrote:
I developed some code that called subroutines from the Port3 Library
(http://www-out.bell-labs.com/project/PORT/). I¹m thinking about making it
available as an R package. But I¹m not sure if their NON-EXCLUSIVE SOURCE
CODE
I'm often wanting to develop functions whilst manipulating data. But I
don't want to end up with a .RData full of functions and data. It
might be that I have functions that are re-usable but not worth
sticking in a package.
So I've tried to come up with a paradigm for function development
that
On Wed, Jul 8, 2009 at 3:53 PM, hadley wickhamh.wick...@gmail.com wrote:
Sounds like a neat idea! Especially with Duncan Murdoch's recent work
making it easy to parse rdoc files in R.
I reckon the tricky bit is going to be working out how to map the
various possibilities of rdoc files into
x(i,j) = call myrbeta(1,4,5) ! It's correct?
The code of the error in R is:
dyn.load(func.so)
Error in dyn.load(func.so) :
unable to load shared library
'/home/julio/Orientados/Fabio/Fortran/mat-fortran/func.so':
/home/julio/Orientados/Fabio/Fortran/mat-fortran/func.so:
When I quit R, it says:
q()
Save workspace image? [y/n/c]:
and since I've probably got 3 R sessions running in however many
different directories and I might have jumped around with setwd() , I
forget exactly where R wants to save its workspace image. So could q()
be changed to say what file
On Fri, Jun 5, 2009 at 1:46 PM, Mathieu Ribatetmathieu.riba...@epfl.ch wrote:
I guess that having something like this
q()
Save workspace image (/home/me/workspace/.RData)? [y/n/c/e]:
where e means Editing the path should be clear enought, isn't it?
'e' might be thought to mean 'exit' in
On Fri, Jun 5, 2009 at 3:01 PM, Gabor
Grothendieckggrothendi...@gmail.com wrote:
Save workspace to /home/me/workspace/.RData? [ y(es) / (n(o) /
c(ancel) / o(ther) ]:
Quitting emacs produces this:
Save file /foo/bar/baz.qux? (y, n, !, ., q, C-r, d or C-h)
I'm not sure what any other than
On Tue, Jun 2, 2009 at 4:13 PM, Stavros Macrakis macra...@alum.mit.edu wrote:
but simply treats the data frame as a *character* list:
1 %in% data.frame(a=2,b=1) # TRUE
'1' %in% data.frame(a=2,b=1) # TRUE
1 %in% data.frame(a=2:3,b=1:2) # FALSE
1:3 %in%
On Tue, May 26, 2009 at 5:58 PM, Paul Johnson pauljoh...@gmail.com wrote:
There's no mention of plot.factor in the plot help page.
Yes there is, but hidden slightly more than the planning application
for the destruction of the Earth (It was on display in the bottom of
a locked filing cabinet
I've just spent today trying to fix a Heisenbug...
this function returns a linear interpolator function:
interpOne - function(xl,yl){
f = function(data){
t = (data-min(xl))/(max(xl)-min(xl))
return(min(yl)+t*(max(yl)-min(yl)))
}
return(f)
}
k=interpOne(c(0,1),c(4,5))
k(0.5)
[1]
On Thu, May 21, 2009 at 2:18 PM, richard.cot...@hsl.gov.uk wrote:
Most of the plots where colour is typically used to signify a variable
already do map colours to data values. Take a look at help pages for
levelplot/contourplot/wireframe from the lattice package, and image from
base
Someone recently suggested building a system for automatically testing
student's R programs. They would upload them to our Virtual Learning
Environment, which would then run the code on some inputs and see if
it got the right output. If it does, the student scores points for
that course.
My first
2008/10/28 Greg Snow [EMAIL PROTECTED]:
I have some functions that write an external text file for postprocessing by
another program. Some instructions to the other program need to be indicated
by null values (\000 or ^@). The function currently uses code like:
It seems unlikely that the functionality of this program can be separated
from the R-packages upon which it relies, thus making them one work subject
to GPL. Does anyone have any experience with this software/company? Any
thoughts?
They're not distributing R itself:
You must have R on your
2008/10/22 Ian Fellows [EMAIL PROTECTED]:
Perhaps my understanding of GPL is lacking, but isn't this the reason that
GPL is different for LGPL? Linking to functions is allowed in the lesser
license, but not in GPL.
From the gpl faq:
2008/9/19 Jake Michaelson [EMAIL PROTECTED]
... that is, if a vector has identical (and therefore ambiguous) names,
it only returns the first match when the vector is indexed by a
non-unique name. From my perspective, a more sensible behavior would be
to return *all* elements which carry the
Duncan Murdoch wrote:
It's fairly unlikely to go away, but it's an old undocumented feature,
so use at your own risk. There are lots of other undocumented features,
but maybe no others at the lexical level. Check out src/main/gram.y if
you want to search for more at that level, and src/* if
Joerg van den Hoff wrote:
X11(antialias=none)
I obviously am going to plot to the screen device. where
a line width below one pixel does'nt make sense to me.
what am I missing?
The new cairo X11 device with antialiasing off can indeed look awful
, but if you really don't want
If I run R CMD check on my package source directory I get no warnings
(okay, at the moment I get a few, but lets imagine for the sake of
argument I don't). Then if I run it again I get a warning about my
source package having object files in it:
* checking if this is a source package ...
hadley wickham wrote:
It's more than that as though, as floating point addition is no longer
guaranteed to be commutative or associative, and multiplication does
not distribute over addition. Many concepts that are clear cut in
pure math become fuzzy in floating point math - equality,
I have some code that can potentially produce a huge number of
large-ish R data frames, each of a different number of rows. All the
data frames together will be way too big to keep in R's memory, but
we'll assume a single one is manageable. It's just when there's a
million of them that the
Tony Plate wrote:
This is exactly the type of situation that the trackObjs package is
designed for.
Ooh, I'm having deja-vu - yes I think I saw this package a while back
and wondered what magic it did. I shall go play with it later.
Thanks
Barry
I've started a new package and I'm trying to work out the best way to do
it. I'm managing my package source directory with SVN, but R CMD build
likes to dump things in the inst/doc directory when making vignette PDF
files. I don't want to keep these in SVN (they aren't strictly
'source'), so
Oleg Sklyar wrote:
If I am not mistaken R CMD build builds the package temporarily and uses
that build to build the vignette, so where is the problem? All my
vignettes build fine on both Linux and Windows and on Windows you
actually see that running R CMD build --binary builds the source code
Charles Danko wrote:
Hello,
Quick question.
I have written a C function - I would like to make it return two vectors to
the R environment - one STRSXP vector, and one INTSXP vector. Is this
possible/ easy to do using the API?
I looked, but could not find the answer to this question
Ben Bolker wrote:
x = readLines(http://developer.r-project.org/R.svnlog.2007;)
rx = x[grep(^r,x)]
who = gsub( ,,sapply(strsplit(rx,\\|),[,2))
twho = table(who)
twho[ripley]/sum(twho)
74% of all commits!
And 99% of all 'This is not a bug/You have not read the posting guide'
messages!
[EMAIL PROTECTED] wrote:
Beyond that, there may be a few more things that can be done to make R run
stupidly fast on ps3 or IBM Cell blades.
Wouldn't the right way to go here be to make it use the PS3 graphics
hardware, in a http://www.gpgpu.org/ kind of way? Or are the Cell
processors
I'm using R called via Rpy from Python running from Quantum GIS. Put
simply, I'm developing a GUI wrapper round some R plotting functions.
What I want to do is offer the user a 'Save Plot As...' option.
The problem is divining what sort of output files R can copy a
graphics device into.
Is there a good reason why arguments to 'attach' and 'detach' differ so
much? Yes, I know this is the documented behaviour, it just seems to
violate the principle of least surprise.
Examples:
file = foo.RData
df = data.frame(x=1:10,y=1:10)
attach(file) # attaches the RData file
Gregor Gorjanc wrote:
I have recently found RForge.net (http://www.rforge.net/) by Simon
Urbanek and found out today that the site is accepting subscriptions.
Great! However, browsing a bit on the site I found a link to another
forge: R-Forge (http://r-forge.r-project.org/).
Is/will the
Kevin B. Hendricks wrote:
As I remember, I think someone has built an interface from Gnumeric
to R if I am not mistaken. That project if it is still alive might
provide a nice model of how to interface from a spreadsheet to R
without lots of GUI front end stuff being needed. As I
Spencer Graves wrote:
Consider the following:
plot(0, 0, xlim=c(-10, 10), ylim=c(-50, 50))
lines(c(0,0), (2*c(-pi, pi))^2)
Because squaring is done before multiplication - its higher priority.
Hence you end up with (-2*pi)^2 and (2*pi)^2, which are the same, and
your 'line'
Since many posts to R-devel/help invoke this response:
Prof Brian Ripley wrote:
Please, use the current version of R and not an obselete one
is there an argument for including a version check on R startup? These
things seem somewhat in vogue these days (what with everything on the
internet
Ross Boylan wrote:
On Wed, Jan 03, 2007 at 11:46:16AM -0600, Ricardo Rios wrote:
Hi wizards, does somebody know Which programming paradigm is the most
used for make R packages ? Thanks in advance.
You need to explain what you mean by the question, for example what
paradigms you have in
The docs tell me:
The header files define USING_R, which should be used to test if the
code is indeed being used with R.
but surely you only get that if you #include R.h, which you can only
do if you are using R. If you have code that you might want to compile
in R and for other purposes, how
Prof Brian Ripley wrote:
If *no* R.h is around: easy to solve.
Have a dummy R.h somewhere?
What is BUILD?
Oh, pardon me for forgetting the arbitrary capitalisation of R CMD
thingies. Can someone come up with a mnemonic for remembering that
BATCH, COMPILE, SHLIB, INSTALL, LINK and
So the problem is that you needed rather
#include R.h
#ifdef USING_R
x = rand_unif(0.0,1.0);
#else
#include gsl_random.h
x = gsl_runif(0.0,1.0);
#endif
since if R.h is not around, the include will not include it.
If R.h is not around, the preprocessor will throw a tantrum:
cc
It does not remove names in Splus either, just all
other attributes. I see c() used in several Splus
functions as a way to convert a matrix into a vector
(by removing the .Dims and .Dimnames attributes).
I dont see the logic in certain attribute names (?attr lists 'class',
'comment',
[EMAIL PROTECTED] wrote:
After you created one and submitted it to us probably at the same place as
the bitmaps. In the meantime it will have to suffice that you use all we
have, and that are the bitmaps (the logo was done by a volunteer who chose
to use a bitmapped graphics program). It is
Dirk Eddelbuettel wrote:
Are you aware of Simon's Rserve project at http://www.rosuda.org/Rserve/ ?
It already has Java and C++ client code -- it would be nice if you could
add Python client code to this project.
I dont think its feature-complete or well-tested or documented and
certainly
[EMAIL PROTECTED] wrote:
The current version of R is 2.3.1 patched. You are asked not to report
problems on obselete versions of R.
This seems to be gcc 3.3.6, also obselete.
If configure says:
configure: WARNING: ## --- ##
configure: WARNING: ##
Prof Brian Ripley wrote:
The dnorm functions yield a wrong value when the standard deviation is near to
1e-1
What is wrong here? Try the textbook formula
x - 0
m - 0.04
sd - 0.3
1/(sqrt(2*pi)*sd) * exp(-0.5*(x-m)^2/sd^2)
[1] 1.318039
Even MS Excel gets this one right:
I'm having some fun with R on a Windows 2003 Server talking to a Wyse
Winterm running Thinstation Linux. The Winterm boots Linux from the
network and then runs rdesktop to a Dell 1750 server (dual 3G Xeon or
somesuch).
The first problem I noticed was that R (and the terminal) ground to a
near
Jonathan Callahan wrote:
Can someone please explain to me exactly what R is doing with the the
standard IO handles and whether or not there is any simple way to convince
it to behave as if it were talking to a user at the other end of a keyboard
and terminal? I've already tried
Full_Name: Barry Rowlingson
Version: 2.2.0
OS: Linux
Submission from: (NULL) (194.80.32.8)
The image function with a matrix of all NA values fails with:
xyz=list(x=1:3,y=1:4,z=matrix(NA,3,4))
image(xyz)
Error in image.default(xyz) : invalid z limits
In addition: Warning messages:
1: no finite
Prof Brian Ripley wrote:
OK, let's try to reproduce that:
x1 - runif(1000)
...
y - rnorm(1000)
fit - lm(y~(x1*x2*x3*x4*x5*x6*x7*x8)^2)
No crash, a quite reasonable fit.
Add one more:
x9 - runif(1000)
works with 8:
fit - lm(y~(x1*x2*x3*x4*x5*x6*x7*x8)^2)
but go 'one over
set.seed(123)
x1 - runif(1000)
x2 - runif(1000)
x3 - runif(1000)
x4 - runif(1000)
x5 - runif(1000)
x6 - runif(1000)
x7 - runif(1000)
x8 - runif(1000)
y - rnorm(1000)
fit - lm(y~(x1*x2*x3*x4*x5*x6*x7*x8)^2)
For me (with 9 variables) this crashes in model.matrix:
Prof Brian Ripley wrote:
What does anyone want such dates for? I hope there was an extremely good
reason to spend other people's time on this, and look forward to an
extremely convincing explanation.
I can think of one case where I've seen exact dates that far in the
future used:
Uzuner, Tolga wrote:
Dear R Developers,
It would help if R scripts could be compiled into an executable, or a
library.
Are you sure it would help? If you do a big matrix operation in R it
runs at the speed of the underlying C code. It wont get much faster.
Profile your code, find out
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