---
Problem #1:
...
---
Consider using the library RMySQL (available at
http://stat.bell-labs.com/RS-DBI/download/) for directly accessing your
MySQL database from R.
--- bla.R ---
library(RMySQL)
con - dbConnect(dbDriver(MySQL),
group = your group name as defined
Dear list members,
I would like to combine two list boxes with tcltk. The source code runs
fine - but when I choose in the upper box an item, the selected item in the
lower box disappears and vice versa. Could anybody help me?
This is the source code:
##
require(tcltk)
Hi,
I want to estimate a VAR-model and calculate the impulse response function and
a variance decomposition. I am familiar with standard R-functions, like e.g.
arima. But I have not found equivalent functions to estimate a VAR-modell.
Are there any functions available or which R-package can I
Dear R people,
I am trying to plot the results from running svm in library(e1071). I
use plot.svm. After searching through the help archives and FAQ, I
still have several questions:
1. In default, crosses indicate support vectors. But why are there
two colors of crosses? What do they represent?
Hi Greg,
to attach files in e-mails for R-help, you must use the
text/plain MIME type; if you can't do this with your e-mail software,
(besides considering to change your e-mail software :-)
- either put the file up for FTP or HTTP and only publish the URL
on R-help
- or ``cut paste'' into
David can give the definitive answers, but I'll give my take on this...
From: Frank Duan
Dear R people,
I am trying to plot the results from running svm in library(e1071). I
use plot.svm. After searching through the help archives and FAQ, I
still have several questions:
1. In
Marc Gronwald wrote:
Hi,
I want to estimate a VAR-model and calculate the impulse response function and
a variance decomposition. I am familiar with standard R-functions, like e.g.
arima. But I have not found equivalent functions to estimate a VAR-modell.
Are there any functions available or
Hi
I want a function that takes precisely one named argument and no
unnamed arguments. The named argument must be one of a or b.
If a is supplied, return a. If b is supplied, return 2*b.
That is, the desired behaviour is:
R f(a=4) #return 4
R f(b=33) #return 66
R f(5) #error
R f(a=3,b=5)
Ton:
Does preprocessing (scaling, removing constant variables, etc.) by
hand of the whole data set *before* splitting resolve things?
You will need the same variable structure in the training and the test
set anyway; scaling is just the first code part that fails on your
data...
g,
-d
-
From: Liaw, Andy
Here's my attempt:
f - function(...) {
+ argList - list(...)
+ if (length(argList) != 1) stop(Wrong number of arguments!)
+ if (length(names(argList)) != 1 || ! names(argList)
%in% c(a, b))
+ stop(Wrong name for argument!)
+ x - argList[[1]] *
hello,
i am encoutering problems with a function of R concerning the
classification trees.
In the library {tree}, when I use the function tree to grow a
classification tree it should give me an object of class tree. Then I
should be allowed to use this tree object in the function cv.tree
that
-Original Message-
From: NICOLAS DEIG
hello,
i am encoutering problems with a function of R concerning the
classification trees.
In the library {tree}, when I use the function tree to grow a
^^^
That should be package...
classification tree it should give me
Dear Cornelia,
Add the argument exportselection=FALSE to tklistbox().
I hope this hleps,
John
John Fox
Department of Sociology
McMaster University
Hamilton, Ontario
Canada L8S 4M4
905-525-9140x23604
http://socserv.mcmaster.ca/jfox
José Cláudio Faria [EMAIL PROTECTED] writes:
Dear list,
For educational purposes I have been working with the script below.
I have a observation:
line 31
#CScal[i] = (amo^2) # IT IS WRONG, I KNOW, BUT IT MAKE R TO CRASHES!
I'm thinking this is a possible bug in the R!
On 17-Dec-04 Ted Harding wrote:
I don't know the *best* way (expert R anatomists will know ... )
but the following dirty handed modification seems to do what
you want:
f - function(z=NULL, a=NULL, b=NULL){
if(!is.null(z)){
stop(usage: f(a=...) or f(b=...))
}
BXC (Bendix Carstensen) [EMAIL PROTECTED] writes:
specify:
f - function(...,a=NULL,b=NULL) {...etc
Or (variant of same)
f - function(..., a, b) {
if (nargs() != 1 || length(list(...)))
stop(precisely one of a=x or b=y must be given)
else
if (missing(a)) 2*b else
Dear Patrick,
By default, when indexing returns an array dimension of 1, the corresponding
coordinate is dropped. Try j - i[1, 1:2, drop=FALSE], and see ?[.
I hope this helps,
John
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Pat Meyer
Sent:
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Saurin Jani
Sent: Friday, December 17, 2004 3:59 PM
To: [EMAIL PROTECTED]
Subject: [R] How can I take anti log of log base 2 values in R
Hi,
I am using R for microarray data anlaysis. When I
From: Peter Dalgaard
José Cláudio Faria [EMAIL PROTECTED] writes:
Dear list,
For educational purposes I have been working with the script below.
I have a observation:
line 31
#CScal[i] = (amo^2) # IT IS WRONG, I KNOW, BUT IT MAKE
R TO CRASHES!
I'm
On Fri, 2004-12-17 at 06:45 -0800, Dennis Fisher wrote:
When I create pdf documents in R using pdf(), each page has text in the
outer margin indicating the page number. I track page numbers in a
cumbersome manner. Is the page number in a multi-page document tracked
internally by par() or
Hi
Forgive my ignorance. I am selecting a column of a data.frame using the
column name, and I want to know what the resulting column is. My data
frame is called submin and the column name is held in a variable
called display.gname Eg:
is.data.frame(submin)
[1] TRUE
What does str(submin$display.gname) say?
Andy
From: michael watson (IAH-C)
Hi
Forgive my ignorance. I am selecting a column of a
data.frame using the
column name, and I want to know what the resulting column
is. My data
frame is called submin and the column name is held in a
It may be educational to read the help pages of functions that you're using,
namely ?I (or even ?AsIs) and ?as.vector. ?I says it simply prepend AsIs
to the class attribute of the object. ?as.vector says it returns FALSE if
the object has any attributes except names (which it does in this case:
Ted.Harding at nessie.mcc.ac.uk writes:
:
: On 17-Dec-04 Ted Harding wrote:
: I don't know the *best* way (expert R anatomists will know ... )
: but the following dirty handed modification seems to do what
: you want:
:
:f - function(z=NULL, a=NULL, b=NULL){
: if(!is.null(z)){
:
Greetings,
I have a simulation of a nonlinear model that
is failing. But it does not fail til way into the simulation.
I would like to look at the run that is failing
and maybe I could if I could capture the seed for the
failing run. The help file on set.seed says you can do it
but
Hello,
I would like to conduct an exploratory factor analysis with dichotomous
data. Do any R routines exist for this purpose? I recall reading something
about methods with tetrachoric correlations.
Any help would be appreciated.
Best,
Tom Denson
Department of Psychology
University of Southern
With most modern random number generators you can't capture the current
state in a single 32-bit integer. (I suspect the .Random.seed you are
seeing is the state contained in 625 integers).
The easiest way to run reproducible simulations is to explicitly set the
seed, using an integer, before
Frank:
Dear R people,
I am trying to plot the results from running svm in library(e1071). I
use plot.svm. After searching through the help archives and FAQ, I
still have several questions:
1. In default, crosses indicate support vectors. But why are there
two colors of crosses? What do
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PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Hi,
First of all, let me thank you all for replying so rapidly to my first
question on this list. It was very very helpfull... and I'm learning R
faster and faster.
I just encountered a second problem, which may also have a simple solution.
Here it is:
In my program, a vector is a set of
You can use factanal to do the analysis. The polychor() package will
give you polychorics. You can then the do the factor analysis on this
correlation matrix.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Tom Denson
Sent: Friday, December 17, 2004
From: Gabor Grothendieck
Pat Meyer paterijk at hotmail.com writes:
:
: Hi,
:
: First of all, let me thank you all for replying so rapidly
to my first
: question on this list. It was very very helpfull... and I'm
learning R
: faster and faster.
:
: I just encountered a second
Hi, R people:
I generated a package using package.skeleton(). But I can not load it using
library().
package.skeleton(RDIPcor, list = c(ROCAUC.i, cor.i), path =
/home/xiao)
Creating directories ...
Creating DESCRIPTION ...
Creating READMEs ...
Saving functions and data ...
Making help files
Thank you Gabor.
But I have a problem with the beginning of my algorithm, where the list
you call L is empty... then the code breaks down... It says:
Error in any(...,na.rm = na.rm) : incorrect argument type
How can I handle this?
Thank you very much for your help
Patrick
Andy, I don't think that you should be so quick to put yourself down.
Your solution just needs a 'sort' put in it so that order doesn't matter.
With Andy's solution the object can now be a character vector rather
than a list and 'match' can be used for testing new items:
newitems -
Initialize the list with the first vector, instead of an emtry list, if you
can.
Andy
From: Patrick Meyer
Thank you Gabor.
But I have a problem with the beginning of my algorithm,
where the list
you call L is empty... then the code breaks down... It says:
Error in any(...,na.rm =
Dear R-helpers
I have generated a suite of GLMs. To select the best model for each set, I am
using the
meta-analysis approach of de Luna and Skouras (Scand J Statist 30:113-128).
Simply
put, I am calculating AIC, AICc, BIC, etc., and then using whichever criterion
minimizes APE (Accumulated
On Fri, 17 Dec 2004, XIAO LIU wrote:
Hi, R people:
I generated a package using package.skeleton(). But I can not load it
using library().
It looks as though you didn't do anything except run package.skeleton().
As the output of package.skeleton() and the help page suggest, you need
further
Patrick Meyer patrick.meyer at internet.lu writes:
:
: Thank you Gabor.
:
: But I have a problem with the beginning of my algorithm, where the list
: you call L is empty... then the code breaks down... It says:
:
: Error in any(...,na.rm = na.rm) : incorrect argument type
:
: How can I
Hello!
With library stats I use command plot and get a cluster dendrogram. But I
have more than 250 labels and the labels were superposed on cluster dendrogram.
So what option should I use to zoom out the characters of the labels.
Your sincerely,
Qingyou
[[alternative HTML version
Patrick Hausmann c18g at zfn.uni-bremen.de writes:
:
: Dear R-users,
:
: I am trying to reshape the DF dat2 in the long format,
: but can't figure out how to use the split-option:
:
: dat2
:a.1995.z b.1995.z a.1996.zvar
: 1 100.0 100.0 100.0 Neue Anlagen
Hi All:
I have to compute bootstrap confidence intervals, the statistic
(incremental cost effectiveness ratio) is computed from two samples
(intervention and control) of different sizes. All the bootstrap
functions that I have seen use one dataset as argument. I may go ahead
and get the desired
See , e.g. section 8.3 The two-sample problem of Efron and Tibshirani's AN
INTRODUCTION TO THE BOOTSTRAP. It makes it clear there why one just
bootstrap samples independently from the two separate samples.
The strata argument of boot() in the boot package allows one to do such
independent
Alexander C Cambon wrote:
I apologize for adding this so late to the SAS or R software thread.
This is a question, not a reply, but it seems to me to fit in well with
the subject of this thread.
I would like to know anyone's experiences in the following two areas
below. I should add I have no
On Wed, 15 Dec 2004, Wiener, Matthew wrote:
It sounds like clara in package cluster might help.
Cheers, this looks just the ticket. How should I choose k though?
Dan.
Regards,
Matt Wiener
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Dan Bolser
Alexander C Cambon wrote:
I apologize for adding this so late to the SAS or R software thread.
This is a question, not a reply, but it seems to me to fit in well with
the subject of this thread.
I would like to know anyone's experiences in the following two areas
below. I should add I have no
Patrick Meyer patrick.meyer at internet.lu writes:
:
: It does not exactly do what it is meant to... Instead of breaking down,
: my code is looping forever now... I think I will have a deeper look at
: it tomorrow...
:
: In fact, I have two lists: let's say L and N.
:
: An elements (or set)
One point that is missing in this discussion is ease of review by the
statistician at the FDA. As a statistician in clinical trials, you want to
make it as easy as possible for your colleague at the FDA to do their job,
so you put the programs in a format that they are more likely to find
useful.
Hi
During using the R(vision 2.0.1), I meet a problem. I would like to do the
Multiple Correspondence Analysis, but when I use the mca(lf, nf = 2, abbrev
=
FALSE), the sentence Error: couldn't find function 'mca' will appear. So,
please tell me how can I use the mca(), thanks!
On Fri, 17 Dec 2004 13:07:08 -0500, Doran, Harold [EMAIL PROTECTED] wrote:
You can use factanal to do the analysis. The polychor() package will
give you polychorics. You can then the do the factor analysis on this
correlation matrix.
-Original Message-
From: [EMAIL PROTECTED]
On Sat, Dec 18, 2004 at 11:14:16AM +0800, [EMAIL PROTECTED] wrote:
Hi
During using the R(vision 2.0.1), I meet a problem. I would like to do the
Multiple Correspondence Analysis, but when I use the mca(lf, nf = 2,
abbrev =
FALSE), the sentence Error: couldn't find function 'mca'
By requesting 'help.search(mca)', I learned that mca was in
library(MASS). Did you try library(MASS) before your mca command?
hope this helps.
spencer graves
p.s. Using 'help.search' was suggested by the posting guide,
www.R-project.org/posting-guide.html.
[EMAIL PROTECTED]
Thanx to all of you who helped me with my sets problem. ;-)
Patrick
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