Displaying 20 results from an estimated 7000 matches similar to: "Test for new page"
2003 Jun 22
1
Using weighted.mean() in aggregate()
Dear R users, I have a question on using weighted.mean() while aggregating a
data frame. I have a data frame with columns Sub, Length and Slope:
> x[1:5,]
Sub Length Slope
1 2 351.547 0.0025284969
2 2 343.738 0.0025859390
3 1 696.659 0.0015948968
4 2 5442.338 0.0026132544
5 1 209.483 0.0005304225
and I would like to calculate the weighted.mean of Slope, using Length
2005 Apr 30
1
legend(): how to put variable in subscript?
Dear List,
I would like to plot a simple legend with two math expressions, e.g.
plot(0)
legend(1, 0.5, expression(sigma[i], sigma[j]))
The difficulty is that i and j should be variables rather than strings "i" and
"j". In other words I'd like to do something like:
i = "A"
j = "B"
legend(1, 0.5, expression(sigma[i], sigma[j]))
and have "A"
2000 Mar 26
2
hist2d() function in R?
Dear R users,
I am just starting with R (v. 1.0.0) and I use Vehables & Ripley's
MASS book for examples.
In the intro session, there is an example of a 2D histogram on an 8x8
grid:
x <- rnorm(1000)
y <- rnorm(1000)
contour(hist2d(x,y,,,8,8))
R complains:
Error in contour(hist2d(x, y, , , 8, 8)) :
couldn't find function "hist2d"
I looked for hist2d() in the
2000 Oct 10
1
Adding a new column to data frame (recoding)
Dear R users,
I have a very simple question. What is the easiest way to recode data in
one
of the columns of a data frame and put it into a new column?
For example, here is a simple data frame:
var1
1 1
2 2
3 3
How do I add a new column to data - 'var2' in which I group values in
'var1',
for example:
var1 var2
1 1 4
2 2 4
3 3 5
It's got to
2000 Jun 13
3
Question on closure (lexical scoping) and encapsulation
Dear R users,
I have two related questions about scoping and data encapsulation.
One is fairly specific - I am looking at "scoping.R" which is used in
demo(scoping) - it's an example of lexical scoping and encapsulation.
Where is the 'total' stored? It is not an attribute in 'ross' or
'robert'
however, functions like balance() have access to it.
Is it more
2010 Nov 16
4
Simple error handling in R
Hi R experts,
I am looking for a simple error handling approach, whereby I could stop
function execution with a customized error message. For example:
for (i in 1:10) {
if (i == 5)
# I'd like to be able to stop right here with an error message I have
complete control over
}
The problem with stop() is that I cannot control completely what gets
printed to the terminal, even with
2000 Dec 14
1
How do I track a segfault?
Dear R users,
I have to catch a nasty bug and would appreciate any advice or help!
I get a segfault (core dumped) that happens in one of my own functions.
The problem is, it
does not happen most of the time, only sometimes, so it's very hard to
reproduce. Or it may
run ok in interactive mode, but bug out in batch mode. Also, it tends to
happen more on
the slower of my 2 machines (PII 266),
2002 Oct 26
3
Using the Search Engine & Keywords
Dear R experts,
Can anyone running R on Linux share how they use the "Search Engine &
Keywords" page of R documentation? I cannot do any javascript on this page,
either searching for a term or following the keyword links. I tried Konqueror
(3.0.4, with javascript globally enabled), Mozilla (1.1), and Galeon (1.2.5),
but none of them do anything...
Sorry, I don't know
2000 Nov 17
2
Randomly selecting n (unique) elements out of vector of length m...
Dear R users,
I wonder if there is a simple way to select a random and non-overlapping
subset of a vector?
Say, I need to randomly select 10 out of 100 numbers in a vector V. By
"non-overlapping" I
mean that a number in any position in V (V[1]...V[100]) should be
selected at most once
(i.e. selection without recycling).
I could simplu use a uniform distribution to generate selection
2010 Mar 05
2
Sweave and optional document sections
Dear R and Sweave users,
Is there a way to have optional sections in a Sweave-generated report
document, complete with section header(s), text and code chunks? In other
words, I'd like for my report to include or omit certain sections based on
the data itself.
For example, If I examine the input dataset early on in the report and set a
variable has_daily_data = TRUE, then I'd like to
2004 Dec 20
1
mono fonts (was RE: RE: [R] SAS or R software)
Ah, I'm using Exceed Hummingbird 7.1 as the X server....
It does have fixed width fonts, and it is happy with variable width fonts up
to this extreme ....
A little more fiddling shows that this succeds with a linux based X11
server, and that even
plot(1,1)
par(family="mono",cex=8)
text(1,1,"foo")
segfaults.
I've tested values of cex. Anything above 2.1249
2010 Feb 26
1
Automate generation of multiple reports using odfWeave
Dear R and odfWeave users,
I am looking for a way to automate generation of many reports using
odfWeave. All reports would use the same input ODT file, the only difference
would be in the name of the dataset which will be analyzed in any particular
report. Right now, the name of the dataset is hardcoded in the first code
chuck in the input file:
<<01 get data, echo=TRUE>>
station =
2000 Jun 20
1
dev2bitmap() problem
Hi R users,
dev2bitmap() is not working for me in R-1.1.0. It says:
> dev2bitmap("aaa.png")
Error in device(...) : Object "width" not found
Anyone else has this problem?
Aleksey
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info",
2004 Dec 20
3
RE: [R] SAS or R software
Yes, par(family="mono") would work, except that I get R segfaults from this
sequence:
>
> plot.new()
> par(family="mono")
> par(cex=8)
> strheight("foo")
Process R segmentation fault (core dumped) at Mon Dec 20 16:07:56 2004
on R 2.0.1 (2004-11-15), Red Hat Enterprise Linux AS release 3
In my code I call strheight and strwidth several times in
2004 Jan 18
3
Syntay-Highlighting for KDE-Kate
I'm looking for a plugin for Kate (or any other good text editor for linux)
(KDE 3.x) which will highlight the R syntax.
The link on www.r-project.org is dead!
Any ideas??
Thanks Lars
2004 Mar 30
1
Where: package licenses
Thanks Thomas and Marc that is what I was looking for.
-Jason
The DESCRIPTION file for a package lists the license; this is also given
in the CRAN entry for each package.
-thomas
Marc Schwartz <MSchwartz@MedAnalytics.com>
03/30/2004 09:02 AM
Please respond to MSchwartz
To: Jason.L.Higbee@stls.frb.org
cc: R-Help
2004 Jul 07
3
fast NA elimination ?
dear R wizards: an operation I execute often is the deletion of all
observations (in a matrix or data set) that have at least one NA. (I
now need this operation for kde2d, because its internal quantile call
complains; could this be considered a buglet?) usually, my data sets
are small enough for speed not to matter, and there I do not care
whether my method is pretty inefficient (ok, I
2005 Apr 15
5
Pearson corelation and p-value for matrix
Hi,
I was trying to evaluate the pearson correlation and the p-values for an nxm matrix, where each row represents a vector. One way to do it would be to iterate through each row, and find its correlation value( and the p-value) with respect to the other rows. Is there some function by which I can use the matrix as input? Ideally, the output would be an nxn matrix, containing the p-values
2003 Apr 02
2
RH 9 and R 1.7.0 Beta April 2 Latest
Hi all,
I am now up and running on RH 9. Went pretty smoothly (about 1 hour for
the clean install, though still doing some "tweaking".) There are
already about 40 update RPMS including a new kernel via RHN, which I
have installed.
Noticeable improvements since 8.0, especially with the new version of
XFree86, which yields sharper fonts that are now (with TTF fonts
installed)
2008 Jul 31
3
Re: how to install BackupPC on CentOS 5.2 -- how do I use Test repository?
Ok, downloading the BackupPC RPM directly did not work to myriad
dependencies and sub-dependencies.
How do I add the Test repository to my yum config, please?
Aleksey
On 7/31/08, Aleksey Tsalolikhin <atsaloli.tech at gmail.com> wrote:
> Hi. I just installed CentOS for the first time, to make a BackupPC server.
>
> However, when I try to install BackupPC using yum, I get the