R help - Jun 2008 - How to estimate the parameters in a bivariate weibull distribution?

Hi,Dear all R experts,
 
     As far as I know, fitdistr() is only to estimate the parameters in
univariate distributions. I have a set of data (x,y) and I assume it follows a
bivariate weibull distribution. Could someone tell me a function in R that is
suitable for parameter estimation in multivariate cases? Thanks in advance!
 
Cheers,
YAN
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Hi, Dear all R experts,
 
   I could use the fitdistr() function to estimate the parameters in a
univariate weibull distribution,but for the bivariate case it doesn't work.
Is there a function in R to estimate the parameters in a bivariate weibull
distribution, given I have a set of observations (x,y) and I know the pdf of
this distribution?
   By the way, does someone know how to get the bivariate kaplan-meier estimator
of P(X>x,Y>y)? Thanks a lot!!!
 
Cheers,
Lucy
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