er...@rice.edu
on Wed, 16 May 2012 12:39:44 -0500 writes:
I need to fit a t copula with fixed degree of freedom
let's say 4. I do not want to estimate the dof together
with correlation matrix optimally. Instead fix the dof to
4 and only estimate the correlation matrix
I need to fit a t copula with fixed degree of freedom let's say 4. I
do not want to estimate the dof together with correlation matrix
optimally. Instead fix the dof to 4 and only estimate the correlation
matrix in the optimization routine. Is anyone aware of such estimation
method in R.
I'm a new user of R and a novice user in copula R package.
I want to fit 3-dimensional t copula for my trivariate data. So I used the
command
t.cop - tCopula(c(0.785,0.283,0.613),dim=3,dispstr=un,df=6,df.fixed =
TRUE)
where c(0.785,0.283,0.613) is the correlation pattern of my data with 0.785
Hi r-users,
I try to fit the t copula using the gamma marginals. But I got error message
which I don't really understand.
Thank you for any help given.
myCop.t - ellipCopula(family = t, dim = 2, dispstr = toep, param = 0.5, df
= 8)
myCop.t
myMvd - mvdc(copula = myCop.t, margins = c(gamma,
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