rportfolios (version 1.0-1)

segment.complement: Complement of Investment Segments

Description

This function returns a vector of investments that are in a portfolio with n investments but not in the given investment segments

Usage

segment.complement(n, segments)

Arguments

n

A positive integer for the number of investments in a portfolio

segments

A vector or list of vectors that defines the investment segments

Value

A vector of investments or a NULL value.

Details

If the investments in the given segment are for the entire portfolio, a NULL value is returned. If the segments argument is NULL, then the entire portfolio of n investments is returned.

Examples

###
### define the segments
###
    I <- list()
    I[[1]] <- c( 1, 2, 3 )
    I[[2]] <- c( 4, 5 )
    I[[3]] <- c( 6, 7 )
    I[[4]] <- c( 8, 9, 10 )
    segment.complement( 10, I )
    segment.complement( 10, NULL )
    segment.complement( 10, I[[1]] )
    segment.complement( 10, I[[2]] )
    segment.complement( 10, I[[3]] )
    segment.complement( 10, I[[4]] )