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Arindam Fadikar
M.Stat
Indian Statistical Institute.
New Delhi, India
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Arindam Fadikar
M.Stat
Indian Statistical Institute.
New Delhi, India
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- Original Message -
From: arindam fadikar arindam.fadi...@gmail.com
Date: Thursday, September 30, 2010 2:17 pm
Subject: [R] how to avoid NaN in optim()
To: r-help@r-project.org
hi ,
lik - function(nO, nA, nB, nAB){
loglik - function(par)
{
p=par[1]
q=par[2
Dear R users,
I have a matrix and i want to get mahalanobis distance based on covariance
matrix and MCD ( minimun covariance determinant), but I could not find any
such argument 'MCD in the function 'mahalanobis'. Please help.
--
Arindam Fadikar
M.Stat
Indian Statistical Institute.
New Delhi
Dear users,
I am using R in UBUNTU , but the version is 9.1. How can I upgrade it to R
10.1?
--
Arindam Fadikar
M.Stat
Indian Statistical Institute.
New Delhi, India
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On Thu, Apr 8, 2010 at 5:38 PM, David Winsemius dwinsem...@comcast.netwrote:
On Apr 8, 2010, at 1:45 AM, arindam fadikar wrote:
Dear users,
How to get a symmetric square root of a positive definite matrix? I have
tried using spectral decomposition, but some eigen values come out
Dear users,
How to get a symmetric square root of a positive definite matrix? I have
tried using spectral decomposition, but some eigen values come out to be
complex. Is there any function in R that can give the symmetric square root
of a pd matrix?
--
Arindam Fadikar
M.Stat
Indian Statistical
x - iris$Sepal.Length[1:50]/iris$Sepal.Width[1:50]
y - iris$Petal.Length[1:50]/iris$Petal.Width[1:50]
I want to check whether (x,y) follows a bivariate normal distribution or
not, using density plot or scatter plot. Is it possible to plot a bivariate
density in R. I cant find any.
Arindam
I have a vector with entries 0 and 1. I want the positions for which the
entries are 1.
- arindam fadikar
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I have to obtain an ANOVA table with suitable p-values for an glm of
binomial model with probit link function. I can fit the model but how can i
get the anova table with suitable p values?
Ref: example in help(esoph)
-arindam fadikar
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