A problem on creating fFOLIODATA-class object
s1155022273 at mailserv.cuhk.edu.hk
s1155022273 at mailserv.cuhk.edu.hk
Sat Feb 16 15:05:35 CET 2013
Dear maintainer of package fPortfolio,
Hey guys!
I've came across a problem when creating fFOLIODATA-class object.
According to this fPortfolio document(Pg 10), the "data" parameter in function
portfolioData(data, spec = portfolioSpec()) is able to receive a list object:
"a time series or a named list, containing either a series of returns or named
entries ’mu’ and ’Sigma’ being mean and covariance matrix."
But when I attempted to pass a list object containing mu and Sigma matrix as
required to "data", an error was prompt: "Error: class(data) == "timeSeries" is
not TRUE". Here is my code:
data <- list(mu = a_vector_of_mean, sigma = a_matrix_of_cov)
p <- portfolioData(data, spec = portfolioSpec())
The reason I need to specify mu and sigma to create the data object is because
I
do not have return in time series. Any solution or advice will be highly
appreciated.
Thank you!
--
BEST REGARDS,
Todd Leo
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