Hello,
interesting would be to estimate what would have happened,
if the law would have been installed.
What consequences would that have caused?
Could it make the earth flat again?
And which shape would the earth have, if pi = 3?
And how would a football-ball look like?
(Like american football
manchester.ac.uk> writes:
>
> On 21-Sep-09 18:47:50, Oliver Bandel wrote:
> > Hello,
> > in scilab /Matlab there are functions that can create linear
> > sequences (like R's seq()) as well as logarithmic sequences.
> >
> >
> > Is there a l
Hello,
in scilab /Matlab there are functions that can create linear sequences (like R's
seq()) as well as logarithmic sequences.
Is there a logarithmic aequivalent of seq()?
Or maybe this would be an idea for newer R-releases,
maybe a type-option with "linear" and "logarithmic" as
parameters...
Jeroen Ooms uu.nl> writes:
[...]
> Output written on file643c9869.dvi (1 page, 372 bytes).
> Transcript written on file643c9869.log.
> Error: Can't open display:
The can't open display-error rather looks like an X11-problem.
Are you reglar user on that system ?
Try to look at the dvi with you
Hello,
are there simulation packages to simulate population dynamics,
for example for epidemiology?
Or are there (open source) tools that can do that task and can be
used from within R (or at least can read the resulting data files)?
Oliver
__
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Oliver Bandel first.in-berlin.de> writes:
[...]
> I assume for each entry in /etc/passwd until the one that os looked for,
> /etc/odbc.ini is opened once...
> ...maybe I should test this hypothesis... looks strange.
[...]
No, my loginname is in line 31 of /etc/passwd.
oli...@siou
Hello,
I "strace"t the R session when trying to connect to the database.
Strange, that /etc/odbc.ini first should be opened with Append-mode:
open("/etc/odbc.ini", O_WRONLY|O_CREAT|O_APPEND, 0666) = -1 EACCES (Permission
denied)
open("/etc/odbc.ini", O_RDONLY) = 3
fstat(3, {st_mode=S_
Dumblauskas, Jerry credit-suisse.com> writes:
[...]
> The alloc error means you are close...
[...]
Ah, ok, I see...
...then you are right that Driver has to be the path to
the shared library. :-)
Oliver
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Dumblauskas, Jerry credit-suisse.com> writes:
>
> OK
>
> Is your PostGres server on the same Linux box you are running R on?
> Sample values
> Server = 169.49.30.69 (localhost host means you are on the same
> box)
> Port= 2700 (make sure your port is correct)
>
> Also, I a
Dumblauskas, Jerry credit-suisse.com> writes:
>
> OK
>
> Is your PostGres server on the same Linux box you are running R on?
> Sample values
> Server = 169.49.30.69 (localhost host means you are on the same
> box)
yes, all is local here.
> Port= 2700 (make sure your port
... I also tried this one:
r...@siouxsie:~# odbcinst -q -d
odbcinst: SQLGetPrivateProfileString failed with .
r...@siouxsie:~#
"failed with ." ... what a verbose and detailed error message :-(
Oliver
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https:
Hi,
in
/usr/share/doc/r-cran-rodbc/README.gz
I found this example:
==
[testpg]
Description = testpg
Driver = PostgreSQL
Trace = No
TraceFile =
ServerName = localhost
UserName= ripley
Port= 5432
Socket =
Database=
Dumblauskas, Jerry credit-suisse.com> writes:
>
> Looks like Unix
...well, near by: Linux.
>
> If so, make sure your script has the proper paths set
>
> Here is my set up for an oracle DB
>
> export LD_LIBRARY_PATH=/../../instantclient_11_1:/../../unixODBC64_1/lib
> export ODBCINI=/..
Oliver Bandel first.in-berlin.de> writes:
> odbcDataSources()
named character(0)
>
This looks like nothing is available via RODBC interface.
Any idea what's missing?
How can I get all names of available drivers?
Ciao,
Oliver
_
Hello,
I want to try to connect R to PostgreSQL.
I have found that there are three ways:
DBI or RODBC or RPostgreSQL.
I tried around with DBI and RODBC but didn't get it running.
In both cases I'm not clear about how to set the driver/data source.
I get this error:
x > channel <- odbcConne
Philipp Pagel wzw.tum.de> writes:
>
> On Wed, Aug 26, 2009 at 07:53:57PM +0000, Oliver Bandel wrote:
> >
> > is there a way to write the result of a plot
> > to stdout? I mean even a binary thingy like
> > a png-file, written to stdout?!
> > I tried w
Oliver Bandel first.in-berlin.de> writes:
[...]
> For many entries, it would be faster, if you just allocate
> the array that should be written, by just writing 0 into it,
> or empty strings or something like this...
> > mydat[1:100] <- 0
> > mydat
> [1] 0 0 0 0 0
Noah Silverman smartmediacorp.com> writes:
>
> Hi,
>
> Is there a way to build up a vector, item by item. In perl, we can
> "push" an item onto an array. How can we can do this in R?
> I have a loop that generates values as it goes. I want to end up with a
> vector of all the loop results.
Hello,
is there a way to write the result of a plot
to stdout? I mean even a binary thingy like
a png-file, written to stdout?!
I tried with the file-argument of png() and jpeg(),
but did not get working results.
Ciao,
Oliver
__
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Oliver Bandel first.in-berlin.de> writes:
>
> Hello,
>
> I want to read jpeg-files to create 2D-histograms of them.
> Is there a package available for this binary-input issue?
>
> Ciao,
>Oliver
>
>
"In install.packages("rimages")
Oliver Bandel first.in-berlin.de> writes:
>
> Hello,
>
> I want to read jpeg-files to create 2D-histograms of them.
> Is there a package available for this binary-input issue?
>
> Ciao,
>Oliver
>
>
Ok, sorry, I now found something in the archive:
the
Hello,
I want to read jpeg-files to create 2D-histograms of them.
Is there a package available for this binary-input issue?
Ciao,
Oliver
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OK,
thanks to all for the many hints.
I tried some of the packages for creating windroses.
Looks good. :-)
Ciao,
Oliver
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Hello,
are there people outside who use R for analysis of wind-measurement data
(meteorological or for planning of wind power stations)?
Are there already scripts/modules available for analysing and
displaying/plotting wind data in the way it is done in projection/planning
of wind power stations?
Hello,
for very small systems (embedded devices) I think about
a minimalistic R-installation.
When I look at the R-binary, it has just 5472 Bytes of size.
I think this will only be a small initial program,
that afterwards starts other executables and
also will load standard/base package(s).
Can
Hello,
is there a function, that creates a moving histogram?
I need a moving histogram analogical to a moving average.
Is there such a thing in R?
Ciao,
Oliver
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PL
Hello,
I know, this list is for R, not for mathematics,
but because of this problem in question, which may
be interesting for others too, I ask it here.
I want to correct a signal (timeseries).
There is a jump up, and later a jump down.
This error signal (must be an error, because
the normal data
Hello,
I tried to use ylim=c(x,y) in a plot.ts().
This was ignored.
How can I achieve it to create such graphics?
Ciao,
Oliver Bandel
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Hello,
here I have some code, which behaves quite strange, IMHO.
There is a "res.txt" which will be collected before printing it.
There is a paste-statement, which has a comment at the end of the line,
which is this one: "# !HERE!".
If you throw out the first hash-mark "#" on that line,
Bert Gunter gene.com> writes:
>
> FWIW:
>
> Good advice below! -- after all, the first rule of optimizing code is:
> Don't!
>
> For the record (yet again), the apply() family of functions (and their
> packaged derivatives, of course) are "merely" vary carefully written for()
> loops: their mai
John Fox mcmaster.ca> writes:
>
> Dear Kirk,
>
> Actually, co2 isn't a data frame but rather a "ts" (timeseries) object. A
> nice thing about R is that you can query and examine objects:
>
> > class(co2)
> [1] "ts"
[...]
Yes.
And with
> frequency(co2)
[1] 12
One gets "the number of obser
Zitat von Frank E Harrell Jr :
[...]
> > But Hmisc's latex() function(s) create always *.tex-files.
> > Then I have to use the include-statement by myself and also
> > my working directory will be filled up with *.tex files...
>
> No, read the latex function's documentation more closely. Specifyi
Hello,
a while ago I asked for collaboration support
R <-> LaTeX.
I got some answers, and Sweave was one, to use
the Hmisc package another one.
Both have their advantages and drawbacks.
At the moment I would absolutely prefer Sweave,
because the inclusion is done automatically, and I do not
ha
Rajasekaramya gmail.com> writes:
>
>
> Hi there,
>
> I have a dataframe length.unique.info
> > length.unique.info
> abc 12 345
> def 16 550
> lmn 6 600
> I want those names that fall under the condition (length.unique.info[,2][i]
> <=5 && length.unique.info[,3][i] >=500)
[...]
Hello,
Hello,
ok, I found the problem!
I now have:
res_size_by_host <- tapply( selected$size, factor(selected$host), sum)
instead of
res_size_by_host <- tapply( selected$size, selected$host, sum)
and now it works.
IMHO this is strange, because selected$host is already a factor!
I do
Oliver Bandel first.in-berlin.de> writes:
[...]
>
> P.S.: I will try to attach my zip-file now... it contains
> the complete code and a changed weblog (changed IP-addresses).
> I hope the list accepts it.
[...]
As assumed, this did not work.
But I found, where the p
Zitat von Peter Dalgaard :
> Oliver Bandel wrote:
> > Sarah Goslee gmail.com> writes:
> >
> >> I think we need the reproducible example requested in
> >> the posting guide.
> >
> >
> > for ( datum in names(web
Sarah Goslee gmail.com> writes:
>
> I think we need the reproducible example requested in
> the posting guide.
for ( datum in names(weblog_by_date) )
{
print(datum)
selected <- weblog_by_date[[datum]]
res_size_by_host <- tapply( selected$size, selected$host, sum)
Hello,
again I'm on my weblog-script... having problems...
This code:
===
weblog <- read_weblog("web.log")
weblog_by_date <- split(weblog, weblog$date)
#for ( i in names(weblog_by_day) ) { print(i); print(weblog_by_day$i) }
for ( datum in names(weblog_by_date) )
{
p
Hello Jim,
jim holtman gmail.com> writes:
>
> try:
>
> myindex <- "01-Dec-2008"
>
> weblog_by_date[[myindex]]$host
[...]
Ooops yes, that works!
Thank you!
I don't know why this works, and the other thing not.
I thought the difference between [] and [[]] is just,
that the one gives back
Hello,
after splitting a data-frame I want to access the results.
Maybe the problem is, that the factor/index is a string...
...or do I miss knowing details of the index-uasge?
Please look and help:
===
> weblog <- read_weblog("web.log")
>
>
> str(weblog)
'd
Hello Alexy,
Alexy Khrabrov gmail.com> writes:
>
> Did anyone try to write R extensions in OCaml? What would it entail
> to enable it?
[...]
I did not so far, but I have thought about it.
It must be done via C as glue-code.
So it is necessary to be able to write C-extensions
for OCaml (o
Hello Matthias,
Zitat von Matthias Kohl :
> it should work without quotes; i.e.,
>
> results = verbatim
>
> hth,
[...]
Yes, this helps!
Thanks a lot! :)
Ciao,
Oliver
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Hello,
in a Rnw-file I have this used stuff to try out tex-results...
==
<<>>>=
texme <- function() cat( "{\\bf Hallo, das ist voll fett!}\n" )
@
<>=
texme()
@
==
I used this command: "R CMD Sweave example.Rnw"
and got this error:
==
Hello Thomas (and all),
Zitat von Thomas Petzoldt <[EMAIL PROTECTED]>:
> Oliver Bandel wrote:
> > Hello,
> >
> > at some places I read about good interaction of
> > LaTeX and R.
> >
> > Can you give me a starting point, where I can find
> > in
Hello,
at some places I read about good interaction of
LaTeX and R.
Can you give me a starting point, where I can find
information about it?
Are there special LaTeX-packages for the support,
or does R have packages for support of LaTeX?
Or will an external Code-Generator be used?
TIA,
Oliver
slurpy gmail.com> writes:
>
>
> Win xp sp2, R v2.7.1
> Hi. If I have two numeric columns in a data frame, I can use the paste
> command to combine them into a new column separated by a comma.
> c3=paste(c1,c2,sep=',')
> gives: 1 1 -> "1,1"
> Is there any way I can use a new line (\n) as a sepa
Lathouri, Maria imperial.ac.uk> writes:
[...]
> Until here it works fine, but I have the graph plotting only the points. What
I want is to have a line (join
> these points) so to have a time plot. I have tried different commands such as
lines(DATE,pH) or with(DF,
> lines(DATE,pH) but nothing work
Hello,
I have written a mail to gmane
so that they can correct their page (eventually throwing out that link).
Btw, the framed version of the link to the gmane-page (from r-cran project
pages)
appears like being part of the r-cran-pages; that was the reason, why
I thought the gmane-archive-serve
Zitat von David Winsemius <[EMAIL PROTECTED]>:
[...]
> When I used the URL you offered to the Gmane website, both the RSS
> feeds and the web interface links were as current as Gmane ever is.
> Furthermore when I also look at the link entitled "Original list
> archive", it too is also up-to-date.
Zitat von Peter Dalgaard <[EMAIL PROTECTED]>:
> Oliver Bandel wrote:
> > Hello,
> >
> > I got a hint to use the gmane-interface...
> > ...nice tool. :)
> >
> > But the gmane-server which is mentioned ont he healp-pages of
> > htt
Zitat von David Winsemius <[EMAIL PROTECTED]>:
>
> When I look at that page and choose the "all messages with excerpted
> text" link, I get what appears reasonably up-to-date entries compared
> to what I get in my mail subscription. Have you considered the
> possibility that it is not Gmane which
Antje Nöthlich web.de> writes:
[...]
> Now for the whole dataframe i would like to delete rows that have the same
> "Datetime" value as the prior row.
Well, if you do this, then you loose data.
is this really, what you want?
Throwing away data?
I would think it make sense, if all columns are eq
Philipp Pagel wzw.tum.de> writes:
[...]
>
> foo$bar <- factor(foo$bar)
This was my first attemot, before posting here,
and it somehow did not worked...
...now it works so I maybe was too tired,
when trying it and messed something up. :(
[...]
> > x <- factor(c(0,1,3,4,5,7))
> > x
> [1]
Hello,
I got a hint to use the gmane-interface...
...nice tool. :)
But the gmane-server which is mentioned ont he healp-pages of
http://www.r-project.org/
http://dir.gmane.org/gmane.comp.lang.r.general
and the links on that page also,
just only bring me to an gamne-archive, which is outdated.
Philipp Pagel wzw.tum.de> writes:
[...]
> As you are reading the data from a file anyway, the simplest
> solution would probably be to use the colClasses argument ot
> read.table in order to get numeric avlues in the first place.
[...]
Hey, I tried this colClasses-option.
It's really fine! :)
C
Zitat von "Weiss, Bernd " <[EMAIL PROTECTED]>:
> Philipp Pagel schrieb:
> >> * when then looking at str(weblog),
> >>the "-" will stay in the levels, mentioned for the variable
> weblog$V8
> >>-> BAD!
> >>
> >> Is this snormal behaviour?
> >
> > Yes, it is. The idea is that a factor has a
Hello,
* I read in a server weblog with read.table.
-> OK.
* I look for the downloaded-size-values (filesize of the download)
-> OK
* I found "-" and wanted to substitute them with "0" and
used: weblog$V8[ weblog$V8 == "-" ] <- 0
-> OK
* checked the contents on "-" vs. "0" and
Hi,
Zitat von [EMAIL PROTECTED]:
> Hi Oliver: if I understood Chris's email correctly , he wanted to
> compare all possible row ( row1 with the other 4 rows of the other
> matrix,
> row 2 with the 4 rows of the other matrix, etc, etc, ) combinations
> of
> the two matrices,
Oh, I thought he mean
Hello,
sorry for posting this independently of the original thread, but it is
not that easy to answer to mails, when receiving the r-help as
digest...
...
The question was:
> I compare each row of a matrix with each row of another matrix.
>
> testmat1 <- matrix(c(1,2,3,4,5,6,7,8,9,10,11,12,13,
Hi,
Zitat von "Charles C. Berry" <[EMAIL PROTECTED]>:
> On Thu, 6 Nov 2008, Oliver Bandel wrote:
>
> > Hello Charles,
> >
>
> [snip]
>
> >> dim( as.matrix(replicate(10, sample(x, 3) ) ) )
> > [1] 3 10
> >> dim( as.
Hello Charles,
thank you for the hint.
Zitat von "Charles C. Berry" <[EMAIL PROTECTED]>:
[...]
> > This looks good (and correct to me).
>
> Look again .
>
> It is not the same as what you have above.
[...]
OK, yes, you are right!
I mixed the two parameters...
Now I get the same problem als
Hello,
for a simulation I tried the following:
=
sampmeanvec <- function (from, n, repititions)
{
print( paste("samplesize n:", n, "repititions:", repititions) )
samples.mat <- as.matrix( replicate( repititions, sample(from, n)
r to understand the
manuals/help-pages.
Ciao,
Oliver
Zitat von Uwe Ligges <[EMAIL PROTECTED]>:
>
>
> Oliver Bandel wrote:
> > Hello,
> >
> > can the displayed and/or used precision of numbers be
> > configured? And if... how?
>
>
> See
Hello,
can the displayed and/or used precision of numbers be
configured? And if... how?
Ciao,
Oliver
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Zitat von David Scott <[EMAIL PROTECTED]>:
> On Tue, 28 Oct 2008, Oliver Bandel wrote:
>
> > Zitat von David Scott <[EMAIL PROTECTED]>:
> >
> >> On Tue, 28 Oct 2008, Oliver Bandel wrote:
> >>
> >>> Hello,
> >>>
> >>
Zitat von David Scott <[EMAIL PROTECTED]>:
> On Tue, 28 Oct 2008, Oliver Bandel wrote:
>
> > Hello,
> >
> > what are they meaning? It could be something that
> > would show a threshhold above which the result is
> > indicating different meanings t
Hello,
what are they meaning? It could be something that
would show a threshhold above which the result is
indicating different meanings then just random noise.
But there is no description on the definition of those lines,
so it means nothing, if it is not clearly defined.
Where can I find a deta
Hello,
what is the meaning of the plots of an acf()-plot,
when using a data frame as argument?
The result is NOT obvious for me.
There are combinations of the columns of a dataframe in the reulting
plot.
But an acf() is just defined for onyl one time-sreies.
So what do the plots mean? I did not
Hello,
when using acf, there is a blue stripped line in the plot.
What is the meaning of it?
Another question on acf(): when I use adc() on a data-frame
it automatically creates a lot of seperated acf-plots.
But there are combinations of plots, which seem to be ccf()
and not acf(). Is this a "fea
Zitat von Gabor Grothendieck <[EMAIL PROTECTED]>:
> If you simply want successive differences use diff:
>
> x <- seq(4)^2
> diff(x)
>
> tx <- ts(x)
> diff(tx)
[...]
Oh, cool, thanks.
But what about diff / delta_t ?
Do I have to calculate it by my own, or is there
already a function for making
Zitat von Gabor Grothendieck <[EMAIL PROTECTED]>:
> On Sun, Oct 12, 2008 at 7:24 AM, Oliver Bandel
> <[EMAIL PROTECTED]> wrote:
[...]
>
> The input to numericDeriv is not values but an expression.
> See the Examples section at the end of ?numericDeriv
> The exp
Hello,
I don't understand the description / help-text for the
numericDeriv() function.
Why is there a new environment used?
And what is meant with an environment here?
Is it similar or the same as a local workspace,
like an environment in functional languages?
And why is it needed here?
numer
Zitat von Duncan Murdoch <[EMAIL PROTECTED]>:
> On 10/10/2008 8:13 AM, Oliver Bandel wrote:
> > Hello,
> >
> >
> > I tried to use rgl.snapshot and it failed.
> >
> > The error message was not very verbose:
> >
> >
> >
> > ==
Hello,
I tried to use rgl.snapshot and it failed.
The error message was not very verbose:
==
>
>
> plot3d( motion[[idx+2]], motion[[idx+1]], motion[[idx]] )
> rgl.snapshot(filename="/tmp/shot_01.png", fmt="png")
[1] "failed"
>
==
There was a graphic c
Zitat von John Kane <[EMAIL PROTECTED]>:
> --- On Thu, 10/9/08, Oliver Bandel <[EMAIL PROTECTED]> wrote:
>
> > From: Oliver Bandel <[EMAIL PROTECTED]>
> > Subject: Re: [R] plot-parameter pch without influence when plotting
> a data-frame
> > To: &
Zitat von "Gerhard Schön, UKE Hamburg" <[EMAIL PROTECTED]>:
> what is the result of:
>
> df <- data.frame(x = 1:5, y = 1:5)
> plot(df, pch = 1:5)
It prints different symbols.
It seemed, that my pch-settings had an effect,
but some symbols were very similar, especially, when
a lot of them are plo
Hello,
I'm plotting a data-frame and use
plot(..., pch=...)
as well as setting pch with
par(pch=...)
but always get the default symbol (circle)
for the plots.
Does pch have no effect, when plotting a complete
data-frame, instead of certain values/vectors?
How to change the behaviour?
,
Oliver Bandel
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and provide commented, minimal, self-contained, reproducible code.
Hello,
[...]
> --
>
> Message: 41
> Date: Tue, 9 Sep 2008 9:44:34 -0700
> From: <[EMAIL PROTECTED]>
> Subject: [R] Help with 'spectrum'
> To: r-help@r-project.org
> Message-ID: <[EMAIL PROTECTED]>
> Content-Type: text/plain; charset=utf-8
>
> For the command 'spectrum'
Hello Martin,
Zitat von Martin Maechler <[EMAIL PROTECTED]>:
> Just another remakr on this thread.
>
> I you have time series and think about its fourier transform
> (EE language) then you should know that the statistical language
> of that is "spectral analysis" or maybe
> "frequency domain ti
Hello,
what kind of advantages does R's time series offer?
Would it be possible to use data with units?
For example data from a real time series with certain
sampling rates - could they be used so,
that the sample-times are measured in millisceonds or
microseconds, instead of an index of the pos
Zitat von Duncan Murdoch <[EMAIL PROTECTED]>:
> On 04/09/2008 4:44 PM, Oliver Bandel wrote:
> > Zitat von Duncan Murdoch <[EMAIL PROTECTED]>:
> >
> >> Oliver Bandel wrote:
> >>> Hello,
> >>>
> >>>
[...]
> plot3d do
Zitat von Duncan Murdoch <[EMAIL PROTECTED]>:
> Oliver Bandel wrote:
> > Hello,
> >
> >
> > I'm new to R (using it since about two weeks),
> > but absolutely a fan of it from the beginning on. :-)
> >
> > Best tool for working with dat
Hello,
I'm new to R (using it since about two weeks),
but absolutely a fan of it from the beginning on. :-)
Best tool for working with data I found. :-)
I tried using the fft() and other funcitons for
analysing time series.
What I would be glad to have, would be a
convenient way to display the
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