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Hi I need help for plotting efficient frontier, I have expected return and covariance matrix. I am using tseries and downloaded portfolio package too. The suggestion says to use efficient.frontier, but it looks you replaces it by something in...

Hi All I would like to know how to access the values of the variable lambda.mu and and see what abs(lambdas[1]) does since lambdas is not a keyword. Snippet of the code: scoreFunction <- function(lambdas) { lambda.mu...

Hi Sarah Thanks for your advice. My dataset contains all the normalized values. I have to give this dataset as input to ClusterCons package in R. In order to run the package, it requires the data to be converted to...

Hi All I am trying to use the unlist() in R to a list variable. The following statements are within a function. { denominator <- sqrt(s1 / res.em1$n + s2 / res.em2$n) returnValue <- l2 / (denominator + 11) attr(returnValue,"numerator") <- l2...

Hi All This might be something very trivial but I seem to miss something in the syntax or logic which makes me keep wandering around the problem without arriving at a solution. What I want to do is to simulate...

Hi Joshua While looking at the data, all the values seem to be in numeric. As i mentioned, the dataset is already in data.frame. As suggested, I used str(mydata) and got the following result: str(leu_cluster1) 'data...

Hi All I would like to compute the raw p-value from permutation tests and I found mt.sample.rawp() from the package multtest almost similar to what I want to do. But in the function definition: mt.sample.rawp...

Hi All I am new to R and I am not sure of how this should be done. I have a matrix of 985x100 values and the class is data.frame. A sample of my dataset looks like this (Since...

Thanks for the help! But when I tried it, it does not work the same way I want. :( after combining the two matrices, they look like this: V1 V2 X TEL.AML1.C41 Hyperdip.50.C23 1 TEL.AML1.C41...