japal wrote:
Hello,
Something incredible (at least for me) has happen. Yesterday night I
downloaded biplot.R to edit this function and add new features I wished.
Namely I wanted to plot points belonging to different groups using different
colors and symbols. I identified which part of the
Petr PIKAL wrote:
Hi to all
OK as I did not get any response and I really need some insight I try
again with different subject line
I have troubles with correct evaluating/structure of nls input
Here is an example
# data
x -1:10
y -1/(.5-x)+rnorm(10)/100
# formula list
form -
Dear all,
I'm using R 2.8.1 on Windows XP.
I want to loop over several garch-models to evaluate the best model-fit.
After loading the package
fGarch
I execute the following loop:
For(i in 1:5){
for(j in 1:5){
garchFit(~ arma(0,0) + garch(i,j), stetige_renditen[,7],
It is not very clear what you are trying to do here, and
form - structure(list(a = list(quote(y ~ 1/(a - x)), list(a=mean(y,
.Names = a)
is using a historic anomaly (see the help page).
I am gussing you want to give nls an object containing a formula and
an expression for the starting
Dear list,
# I have a DF like this:
sleep$b - c(rep(8,10), rep(9,10))
sleep$me - with(sleep, ave(extra, group, FUN = mean))
sleep
# I would like to create a new variable
# holding the b-th value of group 1 and 2.
# This is not what I want, it takes always the '8' from group '1'
# and not
On Mon, 2009-03-02 at 08:41 +0100, Matthias Kohl wrote:
there were only minor changes in the latest version of RandVar (from
0.6.6 to 0.6.7).
Might this be a mirror problem?
Best
Matthias
Timthy Chang wrote:
Today,I update the packages in R.
but AntiVir Guard dectects the Randvar
On Sun, 2009-03-01 at 17:51 -0800, tedzzx wrote:
Yes, round(1.5)=2. but round(2.5)=2. I want round(2.5)=3 just like the what
the excel do. Can we change the setting or do some trick so that the
computer will work like what we usually do with respect to rounding.
My system is R 2.8.1, winXP,
Hi all,
I've got a density graph made with the following commands:
win.graph(width=13,height=6)
par (
fin=c(13,3)
,mai=c(1,1,0.5,0.5)
,mfrow=c(1,2)
,cex.axis=1.5
,cex.lab=1.5)
dens-density(DATA1.y[2,]-mean(DATA1.y[2,]),kernel=gaussian)
xlimit-range(dens$x)
ylimit-range(dens$y)
hist(
I am using windows XP pack3 and R 2.8.1 so I guess this is savePlot for
Windows.
As Gabor say, savePlot offer to export graph also in eps.
If you want to copy a screen device to postscript portably, use
dev.copy2eps().
I am exporting graph in a package, so I don't want to copy screen device
Thank you
It was simplified version of my problem. I want to elaborate a function
which can take predefined list of formulas, some data and evaluate which
formulas can fit the data. I was inspired by some article in Chemical
engineering in which some guy used excel solver for such task. I was
Don MacQueen wrote:
I have an XML file that has within it the coordinates of some polygons
that I would like to extract and use in R. The polygons are nested
rather deeply. For example, I found by trial and error that I can
extract the coordinates of one of them using functions from the XML
Petr PIKAL wrote:
Thank you
It was simplified version of my problem. I want to elaborate a function
which can take predefined list of formulas, some data and evaluate which
formulas can fit the data. I was inspired by some article in Chemical
engineering in which some guy used excel solver
Hello,
I'm trying to use R statistical packages to do ANOVA analysis using aov() and
lm().
I'm having a problem when I have a large data set for input data from Full
Factorial Design Experiment with replications.
R seems to store everything in the memory and it fails when memory is not
enough
Unfortunately no one ever answered my question and I was never able to
implement the varSel.svm.rfe function in R. I found a 2005 book that
mentions the RFE package: Analyzing Microarray Gene Expression Data, Chapter
6.13.4http://books.google.com/books?id=gt8JNQfpnMICpg=PA206lpg=PA206dq=
but
the
japal wrote:
Hello,
Something incredible (at least for me) has happen. Yesterday night I
downloaded biplot.R to edit this function and add new features I wished.
Namely I wanted to plot points belonging to different groups using
different colors and symbols. I identified which part of
Hi,
I'm trying to install R on Ubuntu.
I succeeded at installing the r-recommended package that is present in the
synaptics, but i can't find the xlsReadWrite package in the repositories
included in my synaptics manager.
Does anybody know a liable repository in which this package is present.
Hi
Prof Brian Ripley rip...@stats.ox.ac.uk napsal dne 02.03.2009 10:24:52:
It is not very clear what you are trying to do here, and
form - structure(list(a = list(quote(y ~ 1/(a - x)),
list(a=mean(y,
.Names = a)
is using a historic anomaly (see the help page).
I am gussing you
Yes Greg,
but if you're buying SAS they'll throw in IML pretty cheaply - SAS think
it's only for a few nerds out there who wan to do funny stuff.
G
Greg Snow
On Mon, 2 Mar 2009, Benoit Boulinguiez wrote:
Hi all,
I've got a density graph made with the following commands:
win.graph(width=13,height=6)
The preferred name is windows().
par (
fin=c(13,3)
,mai=c(1,1,0.5,0.5)
,mfrow=c(1,2)
,cex.axis=1.5
,cex.lab=1.5)
Thanks, this comes close to what I need, but the problem is that I have
repeated measures in each comparison and SimComp does not seem to handle
this. In my experiments, each subject received both placebo and the drug in
a randomized order. So, I want to do multiple paired t-test corrected for
Dear Sir / Madam,
I am new for R coding. Kindly help me out in sorting out the following problem.
There are 50 rows with six coloumns(you could see in the attached .txt file). I
wish to go for filtering this 50 rows for any one of the six coloumns
satisfying the value = 64.
I need to have a
On Mon, 2 Mar 2009, reverend33 wrote:
Hi,
I'm trying to install R on Ubuntu.
I succeeded at installing the r-recommended package that is present in the
synaptics, but i can't find the xlsReadWrite package in the repositories
included in my synaptics manager.
Does anybody know a liable
Hi,
I use the ubuntu deb packages for R. In previous versions of R I could
resize the graphics windows by dragging the bottom corner, but now I
can't. Anyone got any idea why this has happened and whether it is
possible to change it back?
Dan
--
Dear friends
I reformulate the question. I think I did not formulate it properly.
I have some data on some sites. I can define a dissimilarity between each pair
of sites. Using this dissimilarity, I have clustered the sites using the
hclust algorithm, with method ward. I then obtain 48
I am not sure what you intended by
biplotes - function(x, ...) UseMethod(biplot)
That does nothing different from biplot(). You need to call your
modified functions 'biplotes.default' and 'biplotes.princomp' and call
those via
biplotes - function(x, ...) UseMethod(biplotes)
Anything
reverend33 wrote:
Hi,
I'm trying to install R on Ubuntu.
I succeeded at installing the r-recommended package that is present in the
synaptics, but i can't find the xlsReadWrite package in the repositories
included in my synaptics manager.
Does anybody know a liable repository in which this
Thanks a lot!
Unfortunately, the R package I have to sue for my research was only released
on 32 bit R on 32 bit MS Windows and only closed source I normally use
64 bit R on 64 bit Linux :)
I tried to use the bigmemory in cran with 32 bit windows, but I had some
serious problems.
Dear John,
It looks like you are stuck in both the second and the third circle of
the R inferno (http://www.burns-stat.com/pages/Tutor/R_inferno.pdf)
You problem is easy to vectorise.
#could the number of columns = 64 in each row
NumCols - rowSums(datax = 64)
#select rows with at least one
R depends on all of those things to run, but you only have to use those
programs through R. The software depends on these other tools, but the human
doesn't have to switch interfaces.
Tom!
On Fri, Feb 27, 2009 at 9:22 PM, Gabor Grothendieck ggrothendi...@gmail.com
wrote:
On Fri, Feb 27, 2009
Hi,
You also might want to check R4X:
# install.packages(R4X, repos=http://R-Forge.R-project.org;)
require( R4X )
x - xml(http://code.google.com/apis/kml/documentation/KML_Samples.kml;)
coords - x[Polygon///coordinates/# ]
data - sapply( strsplit( coords, (,|\\s+) ), as.numeric )
Romain
Did you do the configuration of Tinn-R after the installation?
Atenciosamente,
Leandro Lins Marino
Centro de Avaliação
Fundação CESGRANRIO
Rua Santa Alexandrina, 1011 - 2º andar
Rio de Janeiro, RJ - CEP: 20261-903
R (21) 2103-9600 R.:236
( (21) 8777-7907
( lean...@cesgranrio.org.br
Aquele que
Dear R-Gurus,
I wonder why 'density' values as shown in hist or plot(density(x)) are
sometimes over 1. How can that be?
Example
hist(rnorm(1000,sd=.5),freq=FALSE)
The resulting plot shows density values below 1 on the y-axis. However,
hist(rnorm(1000,sd=.1),freq=FALSE)
shows density values
Romain Francois wrote:
Hi,
You also might want to check R4X:
# install.packages(R4X, repos=http://R-Forge.R-project.org;)
require( R4X )
x - xml(http://code.google.com/apis/kml/documentation/KML_Samples.kml;)
coords - x[Polygon///coordinates/# ]
data - sapply( strsplit( coords, (,|\\s+) ),
Because densities are not probabilities. It is the area under the density
curve that represents probability.
Example: the chi-squared density with 1 degree of freedom has a singularity at
the zero and is unbounded. The area under the curve, however, is still 1.
(This is a distressingly
Hi Johannes,
ist more a statistical issue. In short: densities are not probabilities!
With a continuous random variable probability statements are typically
over intervals not over points.
A density is bound to have an integral of 1 (and to be non-negative),
nothing else.
Consider the uniform
Johannes Elias wrote:
Dear R-Gurus,
I wonder why 'density' values as shown in hist or plot(density(x)) are
sometimes over 1. How can that be?
Example
hist(rnorm(1000,sd=.5),freq=FALSE)
The resulting plot shows density values below 1 on the y-axis. However,
Try performing ave over the indexes rather than over extra itself:
sleep$newcol -
with(sleep, ave(1:nrow(sleep), group, FUN = function(ix) extra[b[ix][1]]))
On Mon, Mar 2, 2009 at 4:28 AM, Patrick Hausmann
patrick.hausm...@uni-bremen.de wrote:
Dear list,
# I have a DF like this:
sleep$b
Patrick Hausmann Patrick.Hausmann at uni-bremen.de writes:
# I have a DF like this:
sleep$b - c(rep(8,10), rep(9,10))
sleep$me - with(sleep, ave(extra, group, FUN = mean))
sleep
# I would like to create a new variable
# holding the b-th value of group 1 and 2.
# This is not what I
Waverley wrote:
Thanks for the advice. My question is more on how to do this?
Let me use a biology gene analysis example to illustrate:
In biology, there are always some house keeping genes which differ
little even at pathological conditions.
We know that at different batches, there are
There was an error in the line below. It should have been the following (i.e.
the ix in extra[ix] was missing):
sleep$newcol -
with(sleep, ave(1:nrow(sleep), group, FUN = function(ix)
extra[ix][b[ix][1]]))
On Mon, Mar 2, 2009 at 8:01 AM, Gabor Grothendieck
ggrothendi...@gmail.com wrote:
Wacek Kusnierczyk wrote:
Don MacQueen wrote:
I have an XML file that has within it the coordinates of some polygons
that I would like to extract and use in R. The polygons are nested
rather deeply. For example, I found by trial and error that I can
extract the coordinates of one of them using
On 3/2/2009 6:57 AM, Thomas Levine wrote:
R depends on all of those things to run, but you only have to use those
programs through R. The software depends on these other tools, but the human
doesn't have to switch interfaces.
In fact, it doesn't even depend on them to run. Most Windows users
If you want to write Sweave reports you have to learn latex and
R does not hide that from you.
This situation is somewhat better for tcltk, especially if you
use one of the higher level wrapper packages that use it, but for
serious work directly with it you need tcl/tk materials.
On Mon, Mar 2,
Duncan Temple Lang wrote:
Wacek Kusnierczyk wrote:
Don MacQueen wrote:
I have an XML file that has within it the coordinates of some polygons
that I would like to extract and use in R. The polygons are nested
rather deeply. For example, I found by trial and error that I can
extract the
Hello,
I need to apply the Newton-Raphson method and Quasi Newton method to a
maximum log-likelihood function with three parameters.
Which are the functions to use in R? And how to use it?
Thanks, GB.
__
R-help@r-project.org mailing list
install.packages(biglm, dep=TRUE)
library(help=biglm)
kjetil
On Mon, Mar 2, 2009 at 7:06 AM, Hardi sky_dr...@yahoo.com wrote:
Hello,
I'm trying to use R statistical packages to do ANOVA analysis using aov()
and lm().
I'm having a problem when I have a large data set for input data from
Dear all,
I am trying to plot some text in bold face which works fine:
plot(0:1,0:1,type=n)
text(x=0.5, y=0.5, labels=expression(bold(the-actual-string)))
Now when I try to do the following, the displayed text reads thestring:
thestring - the-actual-string
plot(0:1,0:1,type=n)
text(x=0.5,
I'm very interested in the bigmemory package for windows 32-bit
environments. Who do I need to contact to request the Beta version?
Thanks
Steve
Steve Friedman Ph. D.
Spatial Statistical Analyst
Everglades and Dry Tortugas National Park
950 N Krome Ave (3rd Floor)
Homestead, Florida 33034
Looks correct to me. You get a smooth of time for each level of x, so the
smooths describe the way in which each coefficient of x varies in time.
Note that the time varying coefficient for some level of a factor is actually
given by the sum of the smooth for that factor level, and the estimate
the thin plate spline, or tensor product smooths built into `mgcv' might be
useful here (by default mgcv does automatic bandwidth selection for these).
On Sunday 01 March 2009 09:51, Žroutík wrote:
Hi R-users,
I'd like to smooth a matrix to dismiss spikes and to interpolate in plane
Steve et.al.,
The old version is still on CRAN, but I strongly encourage anyone
interested to email me directly and I'll make the new version available.
In fact, I wouldn't mind just pulling the old version off of CRAN, but of course
that's not a great idea. !-)
Jay
On Mon, Mar 2, 2009 at
The apply function which can work on either a row-wise of column-wise
basis can be used with max and can return a logical vector that
will let you separate the rows into those with and without a maximum
greater than 60.
datax - matrix(rnorm(300)*30,nrow=50)
datax - as.data.frame(datax)
On Mon, 2 Mar 2009, Rau, Roland wrote:
Dear all,
I am trying to plot some text in bold face which works fine:
plot(0:1,0:1,type=n)
text(x=0.5, y=0.5, labels=expression(bold(the-actual-string)))
Now when I try to do the following, the displayed text reads thestring:
thestring -
Prof Brian Ripley wrote:
I think your subject line should read 'Excel bug'. From the R help
for round()
Note that for rounding off a 5, the IEC 60559 standard is expected
to be used, '_go to the even digit_'.
In case you did not recognize it, IEC 60559 is an international
Dear Prof. Ripley,
-Original Message-
From: Prof Brian Ripley [mailto:rip...@stats.ox.ac.uk]
Sent: Monday, March 02, 2009 3:05 PM
To: Rau, Roland
Cc: r-help@r-project.org
Subject: Re: [R] Bold Face in Plot
thestring - the-actual-string
plot(0:1,0:1,type=n)
text(x=0.5, y=0.5,
Hi,
I have a dataset. First of all, I know that my dataset shall follow the
Poission distribution. Now I have two questions:
1) How can I check that my data follow the Poisson distribution?
2) How can I calculate Lambda of my data?
Regards
Saeed
--
View this message in context:
Rau, Roland Rau at demogr.mpg.de writes:
I am trying to plot some text in bold face which works fine:
plot(0:1,0:1,type=n)
text(x=0.5, y=0.5, labels=expression(bold(the-actual-string)))
Now when I try to do the following, the displayed text reads thestring:
thestring -
I have wriiten (with the help of the internet) a bash scirpt for my
debian ppc 5.0 laptop to display battery remaining in a panel on the
xfce desktop environment.
echo `hal-device | grep battery.remaining_time | awk '{print $3/3600}' `-battery
and this nicely spits out 4.95 hours in the panel.
Rainer M Krug-6 wrote:
Hi
I am thinking about using Sweave more frequently, especially for
documenting code. But the syntax is slightly awkward for me (name=
... @), and I was thinking if there would be a way of importing the
type of code extracted from an Rnw file back into an Rnw
Make suitable changes for Linux (this was done in Windows Vista) but
you should be able to do without R. In particular the double
echo 4.95 | gawk {print int($1) : 60*($1-int($1))}
On Mon, Mar 2, 2009 at 9:48 AM, stephen sefick ssef...@gmail.com wrote:
I have wriiten (with the help of the
On 3/2/2009 9:06 AM, Rainer M Krug wrote:
Hi
I am thinking about using Sweave more frequently, especially for
documenting code. But the syntax is slightly awkward for me (name=
... @), and I was thinking if there would be a way of importing the
type of code extracted from an Rnw file back into
Yes. But I found out I the files permissions were set so that the configuration
had a null effect and the configuration silently ignored the fact that the file
could not be written to.
Thank you.
Kevin
Leandro Marino lean...@cesgranrio.org.br wrote:
Did you do the configuration of
Yes. But I found out I the files permissions were set so that the configuration
had a null effect and the configuration silently ignored the fact that the file
could not be written to.
Thank you.
Kevin
Leandro Marino lean...@cesgranrio.org.br wrote:
Did you do the configuration of
Thank you. I saw the source. But I am not sure how to get from
.Internal(optim(...)) to fmingr.
Kevin
Katharine Mullen k...@few.vu.nl wrote:
see the fmingr function in src/main/optim.c
(https://svn.r-project.org/R/trunk/src/main/optim.c)
On Wed, 25 Feb 2009 rkevinbur...@charter.net
stephen sefick wrote:
I have wriiten (with the help of the internet) a bash scirpt for my
debian ppc 5.0 laptop to display battery remaining in a panel on the
xfce desktop environment.
echo `hal-device | grep battery.remaining_time | awk '{print $3/3600}' `-battery
and this nicely spits out
I am not clear on what is happening with parscale in optim It seems that
scaling the parameters will produce unpredictable results in a non-linear
function (which is the purpose of optim right?)
The documentation states:
parscale
A vector of scaling values for the parameters. Optimization is
Wacek Kusnierczyk wrote:
Duncan Temple Lang wrote:
Wacek Kusnierczyk wrote:
Don MacQueen wrote:
I have an XML file that has within it the coordinates of some polygons
that I would like to extract and use in R. The polygons are nested
rather deeply. For example, I found by trial and error
Hi
I have 2 sets of data that I want to do a Wilcoxon test on. They are of the
same dimension. One has 4 zero values and the other has 5.
dim(SampA)
[1] 1 10
dim(SampV)
[1] 1 10
I get the folowing error
Error in wilcox.test.default(SampA, SampV, na.rm = TRUE, paired = FALSE, :
'x'
echo 'hal-device | grep battery.remaining_time | awk '{print$3/3600}'
| awk '{print int($1)}:int(60*($1-int($1)))'`
here is the final shell script is anyone is interested - this is
written and working in debian linux
Stephen Sefick
On Mon, Mar 2, 2009 at 10:13 AM, Romain Francois
Hi,
I have been dreaming about a complete R environment on my USB stick for a long
time. Now I finally want to realize it but what I am missing is a good,
portable editor for R which has tabs and syntax highlighting, can execute code,
has bookmarks and a little project file management
Sorry for the lack of information.
I'm indeed under Windows. I indeed used the menu save as in the graph
window.
The matter with the eps obtained was the width of the graph which is lower
than what I had on the screen or what I got when I saved it as a JPEG file.
I tried the postscript command
Try adding paper = special to your postscript arguments.
Clint BowmanINTERNET: cl...@ecy.wa.gov
Air Dispersion Modeler INTERNET: cl...@math.utah.edu
Air Quality Program VOICE: (360) 407-6815
Department of Ecology FAX:
I am new to R and programming in general, so although your framework
wasn't exactly what I needed, it was a tremendous help in getting what
I needed.
Here is what I ended up doing:
idloc - function(xy,tol=0.10,hitcol=red,mispch=19,miscol=red){
if (type==flag) {col=red}else if
Is this book a good reference to learn R for statistical analysis ?
A Handbook of Statistical Analyses Using R by Brian S.
Everitthttp://www.amazon.com/exec/obidos/search-handle-url/ref=ntt_athr_dp_sr_1?%5Fencoding=UTF8search-type=ssindex=booksfield-author=Brian%20S.%20Everitt(Author),
Torsten
See the help for argument 'paper' in ?postscript
On Mon, 2 Mar 2009, Benoit Boulinguiez wrote:
Sorry for the lack of information.
I'm indeed under Windows. I indeed used the menu save as in the graph
window.
The matter with the eps obtained was the width of the graph which is lower
than what
I feel emacs is portable enough for me.
On 3/2/09, Werner Wernersen pensterfuz...@yahoo.de wrote:
Hi,
I have been dreaming about a complete R environment on my USB stick for a
long time. Now I finally want to realize it but what I am missing is a good,
portable editor for R which has tabs
Yes I think it is.
I used it.
On Mon, Mar 2, 2009 at 11:46 AM, choonhong ang angie.bear...@gmail.com wrote:
Is this book a good reference to learn R for statistical analysis ?
A Handbook of Statistical Analyses Using R by Brian S.
What do you get with:
str(SampA)
str(SampV)
The error message suggests you are not giving it numeric vectors.
--
David Winsemius
On Mar 2, 2009, at 10:59 AM, Amit Patel wrote:
Hi
I have 2 sets of data that I want to do a Wilcoxon test on. They are
of the same dimension. One has 4 zero
I am lucky and am now working with a new Redhat Linux 64-bit OS
But I am getting the following error can anyone provide some graciously
needed assistance:
[r...@bluebird system-files]# rpm -i R-2.8.1-1.rh5.x86_64.rpm
warning: R-2.8.1-1.rh5.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID
Duncan Temple Lang wrote:
not really: the xpath pattern '//coordinates' does say 'find all
coordinates nodes searching from the root', but the root here is not the
original root of the whole document, but each polygon node in turn.
try:
root = xmlInternalTreeParse('
root
on 03/02/2009 11:07 AM steve_fried...@nps.gov wrote:
I am lucky and am now working with a new Redhat Linux 64-bit OS
But I am getting the following error can anyone provide some graciously
needed assistance:
[r...@bluebird system-files]# rpm -i R-2.8.1-1.rh5.x86_64.rpm
warning:
stephen sefick wrote:
echo 'hal-device | grep battery.remaining_time | awk '{print$3/3600}'
| awk '{print int($1)}:int(60*($1-int($1)))'`
here is the final shell script is anyone is interested - this is
written and working in debian linux
it can't work -- you have unmatched quotes here.
Folks,
I put up a brief note describing my naive attempts to compute Goldbach
partitions, starting with a brute-force approach and refining
progressively.
http://jostamon.blogspot.com/2009/02/goldbachs-comet.html
I'd welcome your suggestions on improvements, alternatives, other
Check out:
?optim
?nlminb
Ravi.
Ravi Varadhan, Ph.D.
Assistant Professor,
Division of Geriatric Medicine and Gerontology
School of Medicine
Johns Hopkins University
Ph. (410) 502-2619
email: rvarad...@jhmi.edu
-
Hi All,
I have a Philips Webcam, model SPC110NC. I had to download a diver in order
for the webcam to work with Skype from the philips support page
(www.philips.com/support).
Now when I start up TinnR to use with R, it opens the webcam. If I manually
start up R, Tinn R will no longer synch
Hi All,
this might be an easy question but I do not know
how to find R-squared for a QQplot when doing linear regression?
--
View this message in context:
http://www.nabble.com/QQplot-tp22288218p22288218.html
Sent from the R help mailing list archive at Nabble.com.
Hi,
I am plotting scatterplots of horsepower by torque, conditional on brand
(I'm just making up the variables for this example), and the goal is to see
both the scatterplot points as well as the smoothed line. When I do the
following code, I get the same color for the points and line, and would
I was advised someone might be able to help me with this.
Very truly yours,
Dwayne E. Culp, P.E., CFM
Effective February 8, 2009, my contact information becomes:
Dwayne E. Culp, P.E., CFM | JACOBS ENGINEERING GROUP : North American
Infrastructure | Manager: Hydrology Hydraulics Section
Hi all,
I'd appreciate your help with this problem.
I need to plot a barplot with the categories in a specific order. My data
might be:
hours Freq
AN 10
MO 14
LU 30
I need the categories to be in the order:
MO LU AN
Is there some way to pass sort the dataset into this order so
Hi,
I was wondering whether this query was addressed on how to perform
validation through boostrapping. I am currently trying to implement a
boostrapping approach to validation but don't know where to start. Help
please.
Thank you and Regards,
Vivienne Ozohili
Risk Model Validation Manager
Greetings,
I am using fGarch package to estimate and simulate GARCH models. What I would
like to do is to perform Monte Carlo simulation. Unfortunately I cannot figure
how to modify the code to achieve this. I use the following code to run a
single simulation:
spec=garchSpec(model=list(ar=
Hi to all list members,
I'm a newbie to R and will work on it from now. I'm preparing my thesis based
on rpart and RWeka.
I've managed to run already existing test data but couldn't import a data set
from out of R.
(By the way I'm an ubuntu user.)
Thanks for your help
Ahmet KOCYIGIT
Dear Rhelpers
I have the problem with initial values, could you please tell me how to solve
it?
Thank you
June
p = summary(maxLik(fr,start=c(0,0,0,1,0,-25,-0.2)))
Error in maxRoutine(fn = logLik, grad = grad, hess = hess, start = start, :
NA in the initial gradient
p =
On Mon, 2 Mar 2009 12:48:16 -0500 (EST) waterho...@vims.edu wrote:
WE Now when I start up TinnR to use with R, it opens the webcam. If I
WE manually start up R, Tinn R will no longer synch with it.
More detail would help to answer those questions properly. Which Tinn-R
are you using, and how
On 3/2/2009 10:12 AM, Duncan Murdoch wrote:
On 3/2/2009 9:06 AM, Rainer M Krug wrote:
Hi
I am thinking about using Sweave more frequently, especially for
documenting code. But the syntax is slightly awkward for me (name=
... @), and I was thinking if there would be a way of importing the
type
I'm trying to create a bargraph of means with standard error bars using the
function bargraph.CI (in the sciplot package). Like this:
bargraph.CI(x.factor, response,data,xlab, ylab, par(family=serif),font=11)
However, an error message comes up when I try to use the par funtion. Does
the
Hi, Here are three plots:
library(ggplot2)
data(diamonds)
randind - sample(nrow(diamonds),1000,replace=FALSE)
dsmall - diamonds[randind,]
qplot(carat, data=dsmall, geom=histogram,binwidth=1)
qplot(carat, data=dsmall, geom=histogram,binwidth=.1)
qplot(carat, data=dsmall,
Hi,
-Original Message-
From: r-help-boun...@r-project.org
[mailto:r-help-boun...@r-project.org] On Behalf Of Saeed Ahmadi
Sent: Monday, March 02, 2009 3:16 PM
To: r-help@r-project.org
Subject: [R] Finding Lambda in Poisson distribution
Hi,
I have a dataset. First of all, I
Dwayne Culp wrote:
Is it possible to produce partial residual plots in R?
See ?cr.plots in package car. This does Component+Residual (Partial
Residual) Plots.
Regards, Mark.
Culp, Dwayne wrote:
I was advised someone might be able to help me with this.
Very truly yours,
Dwayne E.
Dwayne,
Sorry, I forgot about this: also look at ?ceres.plots, also in package car.
From Prof. Fox's documentation: Ceres plots are a generalization of
component+residual
(partial residual) plots that are less prone to leakage of nonlinearity
among the predictors.
Regards, Mark.
Culp, Dwayne
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