Displaying 20 results from an estimated 12000 matches similar to: "plot history, libraries, weights"
2003 Feb 14
2
RODBC connection failed
I am trying to restart on R after 2 months stop. Start with previously
functioning procedure:
"ch<-odbcConnect("dBase Files")"
get
"Warning message:
ODBC connection failed in: odbcConnect("dBase Files") "
I have tried unsuccessfully different working directories.
The only change I see is that I am working with a new login account on
the same machine.
2000 Aug 28
2
Windows / RODBC / Accented characters
A disturbing behaviour of R: an import of data using RODBC library
(Windows 98, R 1.1.1) recognizes accented characters in variables
names but these can't be manipulated further. See below:
> library(Rodbc)
> ch<-odbcConnect("Paradox Files")
> pollut<-sqlFetch(ch,Pollutio)
> pollut
Mortalit? Densit? Pollution
1 82 600 110
2 97 960
2000 Aug 31
2
Multiv / hierclust / plclust
I use hierclust (hierarchical clustering) in multiv package. In the
documentation it is said that plclust (plotting a dendrogram) is
available in S-plus. Can I find it anywhere (I have searched through
http://lib.stat.cmu.edu/S and found only quotations of plclust in
multiv) or is it only part of the S package (which I don't have)?
Thanks
---------------
Charles RAUX,
Laboratoire
2000 Aug 30
1
Memory management
Some naive questions:
1) How to remove a column in a data frame? I expected that rm would
work but this is not the case (e.g. rm(dat$yyy) gives Warning
message: remove: variable dat$yyy was not found). I only found to
assign NULL value (e.g.: dat$yyy<-NULL). Is it the right way?
2) Is the place formerly occupied by dat$yyy automatically gained by
R for other uses?
3) If t1 and t2 are 2 only
2000 Nov 24
1
groupe averages error
I want to get subsets averaged on numeric variables number 5:13 but I
get the error below that I cannot understand.
> is.factor(dat$Statut)
[1] TRUE
> s<-ave(dat[,5:13],dat$Statut)
Error in [<-.data.frame(*tmp*, , value = if (n) { :
Argument "i" is missing, with no default
Thanks in advance
---------------
Charles RAUX,
Laboratoire d'Economie des Transports
2000 Aug 23
1
3D perspective of a contingency table
How can I draw a 3D perspective of a contingency table, that is
showing 3D bars whose height is in proportion of the table cells?
---------------
Charles RAUX,
Laboratoire d'Economie des Transports
CNRS-Universit? Lumi?re Lyon 2-ENTPE
email : charles.raux at let.ish-lyon.cnrs.fr
http://www.ish-lyon.cnrs.fr/let
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2001 Nov 15
1
ploting axes plaxes ?
I used in previous versions of R (R 1.1) to plot axes on projections of
factorial coordinates using the function plaxes. This doesn't exist any
more. Why this change ? No alternative ?
---------------
Charles RAUX,
Laboratoire d'Economie des Transports
CNRS-Universit? Lumi?re Lyon 2-ENTPE
email : charles.raux at let.ish-lyon.cnrs.fr
http://www.ish-lyon.cnrs.fr/let
2000 Dec 07
0
plot of a cut
I have made a cut of a numeric vector and try to plot it. However
only half of the x-axis annotations (the labels) appear on the plot,
apparently because of the font size. I have tried cex.lab, cex.axis
(what is the difference?) etc. The x labels are never printed
whatever value I use from 0.0005 to 20. I can't obtain a way to
make all the labels appear correctly. Between the short help
2000 Aug 14
5
Writing a workable function
After searching in R- Introduction, FAQ, help... I don't understand
this:
I write a function in a file (.R):
tt <- function(mc) { date()
mc<-read.csv2("machines.txt",na.strings="")
date()
}
I source it in R and I type tt(). The answer is
> tt()
[1] "Mon Aug 14 11:18:25 2000"
>
The instructions following the first "date()" are ignored. Why?
2000 Aug 31
3
help with data import/export
how can I import/export data from ms excel?
also is there a way to import/export data of the hdf format?
is there a way to import/export hdf format for ms excel as well?
thank you very much in advance.
/js
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2005 Nov 17
1
transforming table into data frame
Hello,
I would like to transform a contingency table (A x B) into a data
frame while keeping the cross-tabulation structure (i.e. rows =
levels of A, columns = levels of B). I have tried as.data.frame,
xtabs, etc... and always got a "flattened" list of 3 variables (A, B,
Freq).
How to do that?
Thanks in advance
Charles Raux
2004 Apr 26
0
GEE
Hi there,
I'm trying to fit GEE models on binomial data. My problem is how to "select" a model if ever it is possible and how I decide a factor has to be drop out or not. More specifically:
1) Are QIC (Pan 2001) reliable and can be used in a model selection framework (Burhnam and Anderson 1998)? If yes, how can the QIC be estimated from available information in a gee object?
2) If
2004 Apr 26
0
(no subject)
Hi there,
I'm trying to fit GEE models on binomial data. My problem is how to "select" a model if ever it is possible and how I decide a factor has to be drop out or not. More specifically:
1) Are QIC (Pan 2001) reliable and can be used in a model selection framework (Burhnam and Anderson 1998)? If yes, how can the QIC be estimated from available information in a gee object?
2) If
2012 Nov 16
1
Build without warning RSvgDevice
Hi,
I'm trying to build a modified version of the package RSvgDevice,
without warnings.
I'm having troubles with the description file. Here's the logs :
* checking Rd files ... WARNING
prepare_Rd: RSvgDevice.Rd:1: All text must be in a section
But the RSvgDevice.Rd file seems OKto me, what am I missing ?
Thanks for your help,
Matthieu Decorde
--
Matthieu Decorde,
2007 Mar 07
3
possible bug in model.frame.default
Dear list,
I may have found a bug in model.frame.default (called by the lm function).
The problem arises in my R dev version but not in my R 2.4.0.
Here is my config :
> version
_
platform
x86_64-unknown-linux-gnu
arch
x86_64
2015 Dec 04
0
IEEE TCSC Award for Excellence in Scalable Computing -- Call for Nominations
-------------------------------------------------------------------------------------------------------------------
2016 IEEE TCSC Award for Excellence in Scalable Computing
Call for Nominations
-------------------------------------------------------------------------------------------------------------------
The IEEE TCSC Award for Excellence in Scalable Computing is awarded for
significant
and
2015 Dec 04
0
IEEE TCSC Award for Excellence in Scalable Computing -- Call for Nominations
-------------------------------------------------------------------------------------------------------------------
2016 IEEE TCSC Award for Excellence in Scalable Computing
Call for Nominations
-------------------------------------------------------------------------------------------------------------------
The IEEE TCSC Award for Excellence in Scalable Computing is awarded for
significant
and
2005 Dec 02
1
k-means / role of 'nstart'
Hello,
the k-means {stats} help and the Hartigan&Won paper say nothing about
the way random sets works (parameter nstart). I would expect to get
the different results for each random initial set but I always obtain
only one result: how is it selected?
Charles Raux
2006 Sep 27
1
PDE
Dear all,
Does any know how to solve PDE with R? The archive list refers to the
use of ODE if PDE are parabolic. I am not a mathematician and this does
not mean anything for me!
help would be very appreciated.
Many thanks
--
___________________________________________________
Christophe NGUYEN
UMR 1220 INRA-ENITAB
Transfert sol-plante et cycle des ?l?ments min?raux
dans les ?cosyst?mes
2009 Apr 03
1
Weighted principal components analysis?
Hello R-ers,
I'm trying to do a weighted principal components analysis. I couldn't find any such option with princomp or prcomp. Does anyone know of a package or way to do this?
More specifically, the observations I'm working with are averages from populations of varying sizes. I thus need to weight the observations by sample size. Ideally I could apply these weights at the cell