Displaying 20 results from an estimated 200 matches similar to: "Maximum likelihood estimate ofbivariatevonmises-weibulldistribut"
2005 Oct 26
1
R-help Digest, Vol 32, Issue 26
r-help at stat.math.ethz.ch on Wednesday, October 26, 2005 at 6:00 AM -0500 wrote:
Ronaldo,
Try Harold's suggestion. The df still won't agree, because lmer (at least in its current version) just puts an upper bound on the df. But that should be OK, because all those t tests are approximations anyways, and you can get better confidence
intervals (credible intervals, whatever) by using the
2003 Oct 06
1
Re: Use of the Foreign package to import Stata files
Long ago (Sat, 2 Nov 2002), Bill Hart <w.hart at sbcglobal.net> wrote:
> An R newbie here. I am using R 1.6 currently and have
> (successfully, I think) installed the Foreign package.
> Tried to import a data file created with Stata 7.0
> SE. Had minor problems with syntax then R decided
> that my file was not really a Stata file. It rejected
> the file saying
2007 Jun 16
1
mardia's test
In the R code of Mardia's test, what does the line " x1 = x[x[, p] == i, -p]" mean? Thanks a lot!
function (x)
{
p = dim(x)[2]
f = p - 1
clases = length(table(x[, p]))
for (i in 1:clases) {
x1 = x[x[, p] == i, -p]
ndat = dim(x1)[1]
mo3 = mo3(x1)
mard1 = ndat * mo3/6
cat("Mardia's test for class", i,
2006 Jan 27
1
monochrome mosaic plot in vcd package
helpeRs,
I have a nice looking mosaic plot in an article to be published
soon. Sadly, the published version will be in black and white and so ruin
the advantage of the default shading scheme of tiles.
What would readers suggest as an alternative shading scheme? If I have a
black-and-white shading scheme graduated according to suitable cutoffs I
won't be able to tell positive from
2018 Jan 18
0
request for code
> On Jan 18, 2018, at 7:49 AM, Anjali Karol Nair <anjali232 at gmail.com> wrote:
>
> Hi,
>
> I want to convert my MATLAB programs to R studio programs.
> Kindly guide on the same.
Hi,
Using Google with a search phrase such as "MATLAB to R" will yield a number of possible resources for you such as:
http://www.math.umaine.edu/~hiebeler/comp/matlabR.pdf
which
2009 Mar 26
1
Doubt about audio codec
hello,
I'm Tom?s, an student from Spain.
Firstly, congratulations for your codecs.
Imagine that you are very busy. So I'm very grateful if you read my mail.
Hi, i have a big problem with my Diploma Work. I have a new audio codec and
i want integrate it in Windows Media 9 or higher.
So i download your codec (source code). I have been investigating many
archives of your code. My
2005 Sep 22
3
anova on binomial LMER objects
Dear R users,
I have been having problems getting believable estimates from anova on a
model fit from lmer. I get the impression that F is being greatly
underestimated, as can be seen by running the example I have given below.
First an explanation of what I'm trying to do. I am trying to fit a glmm
with binomial errors to some data. The experiment involves 10
shadehouses, divided between
2007 May 07
4
Mardia's multivariate normality test
Dear all,
I got this error message
> library(dprep)
> mardia(Savg)
Error in cov(data) : 'x' is empty
But with the same data, I got
> library(mvnormtest)
> mshapiro.test(Savg)
Shapiro-Wilk normality test
data: Z
W = 0.9411, p-value = 0.6739
What does the error message "Error in cov(data) : 'x' is empty" mean? Thanks a lot!
Jiao
2006 May 12
3
Maximum likelihood estimate of bivariate vonmises-weibulldistribution
Thanks Dimitris!!! That's much clearer now. Still have a lot of work to
do this weekend to understand every bit but your code will prove very
useful.
Cheers,
Aziz
-----Original Message-----
From: Dimitrios Rizopoulos [mailto:Dimitris.Rizopoulos at med.kuleuven.be]
Sent: May 12, 2006 4:35 PM
To: Chaouch, Aziz
Subject: RE: [R] Maximum likelihood estimate of bivariate
2011 Jan 26
1
Factor rotation (e.g., oblimin, varimax) and PCA
A bit of a newbee to R and factor rotation I am trying to understand
factor rotations and their implementation in R, particularly the
GPArotation library.
I have tried to reproduce some of the examples that I have found, e.g., I
have taken the values from Jacksons example in "Oblimin Rotation",
Encyclopedia of Biostatistics
2018 Jan 18
3
request for code
Hi,
I want to convert my MATLAB programs to R studio programs.
Kindly guide on the same.
[[alternative HTML version deleted]]
2011 Nov 26
5
cumsum in 3d arrays
Hello!
Is it posible to apply /cumsum()/ along the 3rd dimension of 3D array?
Something like matrlab function - /cumsum (*A*,dim)/ which returns the
cumulative sum of the elements along the dimension of *A* specified by
scalar dim.
Thanks in advance
?eljka
--
View this message in context: http://r.789695.n4.nabble.com/cumsum-in-3d-arrays-tp4110470p4110470.html
Sent from the R help mailing
2012 Mar 28
2
Test Normality
Good Night
I made different test to check normality and multinormality in my dataset,
but I don´t know which test is better.
To verify univariate normality I checked: shapiro.test, cvm.test, ad.test,
lillie.test, sf.test or jaque.bera.test and
To verify multivariate normal distribution I use mardia, mvShapiro.Test,
mvsf, mshapiro.test, mvnorm.e.
I have a dataset with almost 1000 data and 9
2001 Jun 11
1
Additional output in cancor
Hi everyone,
Can I suggest an additional output component in cancor, from package
mva? It would be useful to have the number of canonical correlation
vectors, equivalently the rank of the covariance between x and y (label
"rank"). This would usually be min(dx, dy), where dx and dy have
already been computed for the svd function, but there might be
situations where it was less than
2005 Jan 08
0
cmdscale problem
Dear R developers,
there appears to be a small problem with function cmdscale: for
non-Euclidean distance matrices, using option add=FALSE (the default),
cmdscale misses the smallest eigenvalue. This affects GOF statistic g.1
(See Mardia, Kent + Bibby (1979): Multivariate Analysis, eq. (14.4.7).
The corresponding formula in Cox + Cox (2001): Multidimensional Scaling,
2nd ed., p 38, would
2005 Jan 13
2
multivariate diagnostics
Hi, there.
I have two questions about the diagnostics in multivarite statistics.
1. Is there any diagnostics tool to check if a multivariate sample is from
multivariate normal distribution? If there is one, is there any function
doing it in R?
2. Is there any function of testing if two multivariate distribution are
same, i.e. the multivariate extension of Kolomogrov-Smirnov test?
Thanks for
2006 May 19
0
How to deal with missing data?
Hi All,
This is a question not directly related to R itself, it's about how to
deal with missing data. I want to build wind roses i.e. circular
histograms of wind directions and associated speeds to look for trends
or changes in the wind patterns over several decades for some meteo
stations. The database I have contains hourly records of wind direction
and speed over the past 50
1998 Aug 26
0
prcomp & princomp - revised
My previous post about prcomp and princomp was done in some haste as I had long
ago indicated to Kurt that I would try to have this ready for the June release,
and it appeared that I would miss yet another release. I also need to get it out
before it becomes hopelessly buried by other work.
Brian Ripley kindly pointed out some errors, and also pointed out that I was
suggesting replacing some
2004 Mar 13
4
nnet classification accuracy vs. other models
I was wandering if anybody ever tried to compare the classification
accuracy of nnet to other (rpart, tree, bagging) models. From what I
know, there is no reason to expect a significant difference in
classification accuracy between these models, yet in my particular case
I get about 10% error rate for tree, rpart and bagging model and 80%
error rate for nnet, applied to the same data.
Thanks.
2020 Jan 15
2
[cfe-dev] Phabricator -> GitHub PRs?
On Wed, Jan 15, 2020 at 2:31 PM David Greene via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> Emilio Cobos Álvarez <emilio at crisal.io> writes:
>
> > [1] or [2] are recentish examples that come to mind, but it happens
> > fairly often. Of course for a bunch of simpler changes one revision is
> > enough.
>
> I think you forgot to include links. :)