Antony Unwin wrote:
.
The course itself went very well. We encouraged people to bring their
laptops and work in groups. Using JGR as the interface to R helped a
lot, as it was easier for people to load their own data and use the
help. Of course, JGR is
JGR (speak 'Jaguar') is a universal and unified Graphical User
Interface for R (it actually abbreviates Java Gui for R).
see http://stats.math.uni-augsburg.de/JGR/
On Sun, Apr 13, 2008 at 2:51 PM, Tom Backer Johnsen [EMAIL PROTECTED] wrote:
Antony Unwin wrote:
.
The
On Sun, Apr 13, 2008 at 12:37 AM, Martin Morgan [EMAIL PROTECTED] wrote:
Hi Ethan --
Use the XML library
library(XML)
url -
'http://www.nascar.com/races/cup/2007/1/data/standings_official.html'
xml - htmlTreeParse(url, useInternal=TRUE)
The previous line retrieves the html and
Hi, I' am doing a stats project using R to work out the size of a t-test and
wilcoxon test depending on the distribution and sample size. I just can't get
it to work - I want to put my results from the function size() into an array.At
the moment I keep getting the error message:Error in
On Wed, Apr 9, 2008 at 7:37 PM, Ravi Varadhan [EMAIL PROTECTED] wrote:
I have a data file, certain lines of which are character fields. I would
like to skip these rows, and read the data file as a numeric data frame. I
know that I can skip lines at the beginning with read.table and scan,
Hi, I' am doing a stats project using R to work out the size of a t-test and
wilcoxon test depending on the distribution and sample size. I just can't get
it to work - I want to put my results from the function size() into an array.At
the moment I keep getting the error message:Error in
On 13-Apr-08 08:43:33, Louisa Hay wrote:
Hi,
I' am doing a stats project using R to work out the size
of a t-test and wilcoxon test depending on the distribution
and sample size.
I just can't get it to work - I want to put my results from
the function size() into an array.
At the moment
Hi List,
What would be the syntax for outputting a linear regression model and /or a
logistic regression model to PMML .
Regards,
Ajay
www.decisionstats.com
[[alternative HTML version deleted]]
__
R-help@r-project.org mailing list
What would be the syntax for outputting a linear regression model and /or a
logistic regression model to PMML .
There is a pmml.lm method in the pmml package (on CRAN).
I have improved code for that (and a pmml.glm) based on
a student (Ashraf Fouadi) traineeship I supervised.
It is planned to
Thanks for both replies, here is the cleaner version,
n-5
N-10
data.x-matrix(1:(n*N),ncol=n)
data.y-matrix(1:(n*N) + rnorm(n*N,sd=1),ncol=n)
matplot(data.x,data.y,t=p,pch=1:n,bty=n)
mapply(function(x,y){res - lm(y~x) ; lines(x,predict(res)) ; res} ,
Hi the list,
I need to use getGraphicsEvent to plot two graph. On the following toy
example:
- the function b is ploting two graph depending on a parameter
- the function a is calling b according to some user answers. It is
suppose to call b until the user press Return, but it does not.
b -
I've not seen any reposnse to this, probably because
-- this is not the list for C programming questions (use R-devel)
-- there is no example provided for the times quoted.
-- the code is not compilable.
But I got a compiler warning on
int *ipiv = (int *) R_alloc((int) nrA, sizeof(int));
Dear R-Helpers,
I'm fiddling with my .Rprofile in Windows XP R 2.7.0 Beta. I prefer to
manually save my workspace but automatically save my command history via
the .Rprofile. That is working fine once I found that utils:: was
required before the loadhistory savehistory functions. What I would
Muenchen, Robert A (Bob) wrote:
Dear R-Helpers,
I'm fiddling with my .Rprofile in Windows XP R 2.7.0 Beta. I prefer to
manually save my workspace but automatically save my command history via
the .Rprofile. That is working fine once I found that utils:: was
required before the loadhistory
http://stats.math.uni-augsburg.de/JGR/
Obviously a shameless product plug :)
--- Tom Backer Johnsen [EMAIL PROTECTED] wrote:
Antony Unwin wrote:
.
The course itself went very well. We encouraged
people to bring their
laptops and work in groups. Using JGR as
Hi,I am currently doing a project in which we are to investigate the size and
power of three different one sample tests over three different distributions
using a number of different sample sizes and values for mu1. I have written a
function and was trying to get my answer for each test into
Hi,
I have a frame treat and want to find matched pairs in the data frame
control. In the matched (combined) data frame there should be two
variables (0/1),indicating the source of the data (treat or control),
so that it is possibe to set a filter (extraxt/select data).
#Here are the dataframes
Dear Samuel,
The radius reflect the desired coverage of the ellipse. You should be able
to use radius - sqrt(qchisq(.95, 2)), I think.
I hope this helps,
John
John Fox, Professor
Department of Sociology
McMaster University
Hamilton, Ontario, Canada L8S 4M4
Hi Spencer,
Thanks for your email.
Do you have a reference for generating the variance-covariance matrix
from the restricted variance-covariance? Is this a well known
technique?
Regards,
John
On 10/04/2008, Spencer Graves [EMAIL PROTECTED] wrote:
Hi, John:
I just got the following error
Udo
Seems you might want merge()
HTH ...
Peter Alspach
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Udo
Sent: Monday, 14 April 2008 6:41 a.m.
To: r-help@r-project.org
Subject: [R] Matched pairs with two data frames
Hi,
I have a
It's very well known that if a random vector X has a finite mean
mu and covariance Sig, and Y = A X, then
(1) EY = A %*% mu
and
(2) cov(Y) = A %*% Sig %*% t(X)
= tcrossprod(A %*% Sig, A)
Expression (1) says that mathematical expectation is a linear
operator.
Having seen no reply to this, I will offer a couple of comments
that may or may not be useful. Googling for geodesic equation on a
torus produced interesting hits, but RSiteSearch(geodesic equation on
a torus) found nothing. RSiteSearch(torus) returned 33 hits, some of
which referred
If we have a function that returns 2 or more values (such as dim as
applied to a matrix), can we assign these 2 or more values to an equal
number of differently named variables in one line? For example, is
there any way to do something like this:
[NumberRows NumberColumns] - dim(MatrixA)
I am converting some matlab code into R that use inverse of the
complementary error function, erfcinv and did not find an equivalent in
R, is there such a function in some contributed modules?
Thanks.
__
R-help@r-project.org mailing list
Normally in R one returns a list and assigns that to a single
variable but if you really want to do it here is how:
http://tolstoy.newcastle.edu.au/R/help/04/06/1430.html
On Sun, Apr 13, 2008 at 4:56 PM, Scott Romans [EMAIL PROTECTED] wrote:
If we have a function that returns 2 or more values
Scott Romans wrote:
If we have a function that returns 2 or more values (such as dim as
applied to a matrix), can we assign these 2 or more values to an equal
number of differently named variables in one line? For example, is
there any way to do something like this:
[NumberRows
Well, I downloaded the install JGR package for Windows and that seemed
to work fine, after the installation I ended up with a modified R window
which looked nice and uncluttered. Which I like. Very much.
On the other hand, I cannot see how to launch the thing again once I
have closed that
sun wrote:
I am converting some matlab code into R that use inverse of the
complementary error function, erfcinv and did not find an equivalent in
R, is there such a function in some contributed modules?
Basically, it is qnorm() with suitable scaling. The help page for Normal
has the
Hi Udo,
Perhaps
merge(treat,control)
does what you need.
I hope this helps,
Jorge
On Sun, Apr 13, 2008 at 2:41 PM, Udo [EMAIL PROTECTED] wrote:
Hi,
I have a frame treat and want to find matched pairs in the data frame
control. In the matched (combined) data frame there should be two
Hello all,
I have a set of data points, which I have pair distances for. I
managed to create dendrogram for this data set using diana() in R,
however this only gives me the tree and not the clusters themselves. I
am trying to determine clusters using Calinsky and Harabasz Index (CH
Index). I,
Hello,
Because no one has answered this. I presume that no one knows the soluition.
Fortunately, I found the solution:
Keyword: merge()
--
table1-read.table(Salesman.data)
table2-read.table(Employee.data)
Peter Dalgaard wrote:
sun wrote:
I am converting some matlab code into R that use inverse of the
complementary error function, erfcinv and did not find an equivalent in
R, is there such a function in some contributed modules?
Basically, it is qnorm() with suitable scaling. The help
At a guess ...
erfc - function(x) 2 * pnorm(x * sqrt(2), lower = FALSE)
erfcinv - function(x) qnorm(x/2, lower = FALSE)/sqrt(2)
erfc(0.3)
[1] 0.6713732
erfcinv(erfc(0.3))
[1] 0.3
It may not hurt to include these wrappers in R for matlab refugees.
They seem to be coming thick and fast these
On Sun, Apr 13, 2008 at 11:36 PM, Tom Backer Johnsen
[EMAIL PROTECTED] wrote:
On the other hand, I cannot see how to launch the thing again once I
have closed that window. There is supposed to be a launcher somewhere
(JGR.exe?), but I have not been able to find it. It does not seem to be
Tom,
Yes, just re-execute JGR-15.exe (I assume your are on windows downloaded
the latest version). Window's explorer search should find it.
For convenience, I make a shortcut on my desktop pointing to JGR-xxx.exe.
BTW, I do most of my development work in JGR. Thanks to all the Augsburg JGR
[EMAIL PROTECTED] wrote:
At a guess ...
erfc - function(x) 2 * pnorm(x * sqrt(2), lower = FALSE)
erfcinv - function(x) qnorm(x/2, lower = FALSE)/sqrt(2)
erfc(0.3)
[1] 0.6713732
erfcinv(erfc(0.3))
[1] 0.3
It may not hurt to include these wrappers in R for matlab refugees.
They seem to
Bill.Venables at csiro.au writes:
At a guess ...
erfc - function(x) 2 * pnorm(x * sqrt(2), lower = FALSE)
erfcinv - function(x) qnorm(x/2, lower = FALSE)/sqrt(2)
erfc(0.3)
[1] 0.6713732
erfcinv(erfc(0.3))
[1] 0.3
It may not hurt to include these wrappers in R for matlab
Hi All,
I figured out my problem. There was a combination of lack of
understanding on my part, and a bit of missing functionality. I made
a small patch to the rmysqlWriteTable() function passes the field
names to MySQL corresponding to the data columns passed in:
diff -ru
On Apr 13, 2008, at 1:41PM , Dieter Menne wrote:
Spencer Graves spencer.graves at pdf.com writes:
How can I get prediction intervals from a mixed-effects model?
Consider the following example:
library(nlme)
fm3 - lme(distance ~ age*Sex, data = Orthodont, random = ~ 1)
df3.1 -
That's not a bad idea. If the wiki comes up again, please do it.
They are so short I wonder that they just can't go in to base R though.
It's not particularly matlab terminology, it's engineering and physics
terminology pretty widely. See, e.g. Abramowitz and Stegun.
For specifcity, here are
Hi,
I'm very new to R and absolutely love it. Does anyone know how to use
something in R that functions like a BY command in SAS?
For example, let's say you have a variable x, and you want to see the mean.
Easy...
mean(x)
But what if you want to see the mean of x conditional on another
On Sun, Apr 13, 2008 at 7:36 PM, zerfetzen [EMAIL PROTECTED] wrote:
Hi,
I'm very new to R and absolutely love it. Does anyone know how to use
something in R that functions like a BY command in SAS?
For example, let's say you have a variable x, and you want to see the mean.
Easy...
Le dim. 13 avr. à 22:36, zerfetzen a écrit :
Hi,
I'm very new to R and absolutely love it. Does anyone know how to use
something in R that functions like a BY command in SAS?
For example, let's say you have a variable x, and you want to see
the mean.
Easy...
mean(x)
But what if you
Hi R-users,
I would like to do looping for this process below to estimate alpha beta from
gamma distribution:
Here are my data:
day_data1 -
123456 789 10 11 12 13 14 15
16 17 18 19 20 21 22 23
1943 48.3 18.5 0.0 0.0 18.3 0.0
On 14/04/2008, at 2:36 PM, zerfetzen wrote:
Hi,
I'm very new to R and absolutely love it. Does anyone know how to use
something in R that functions like a BY command in SAS?
For example, let's say you have a variable x, and you want to see
the mean.
Easy...
mean(x)
But what if you
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