R/fin-wealth.R

In timeSeries: Financial Time Series Objects (Rmetrics)

#
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  A copy of the GNU General Public License is available at
#  ../../COPYING


###############################################################################
# FUNCTION:                 DESCRIPTION:
#  index2wealth              Converts an index to a wealth series
###############################################################################


index2wealth <-
function(x) 
{
  # A function implemented by Diethelm Wuertz
  
  # Description:
  #    Converts an index to a wealth series  
  
  # FUNCTION:
  #    x - index time series to be converted
  
  # FUNCTION:
  
  # Wealth Initialization:
  for (i in 1:ncol(x)) x[, i] <- x[, i]/as.vector(x[1, i])
  
  # Return Value:
  x 
}


###############################################################################