Cumulated Time Series from Returns
Computes a cumulated financial 'timeSeries', e.g. prices or indexes, from financial returns.
cumulated(x, ...)"cumulated"(x, method = c("continuous", "discrete", "compound", "simple"), percentage = FALSE, ...)
- a character string naming the method how the returns were computed.
a logical value. By default
TRUEthe series will be expressed in percentage changes.
an object of class
- arguments to be passed.
Note, the function
cumulated assumes as input discrete
returns from a price or index series. Only then the cumulatrd
series agrees with the original price or index series. The
first values of the cumulated series cannot be computed, it
is assumed that the series is indexed to 1.
- Returns a 'timeSeries' object of the same class as
the input argument
## Use the Microsofts' Close Prices Indexed to 1 - MSFT.CL <- MSFT[, "Close"] MSFT.CL <- MSFT.CL/MSFT[[1, "Close"]] head(MSFT.CL) ## Compute Discrete Return - MSFT.RET <- returns(MSFT.CL, method = "discrete") ## Cumulated Series and Compare - MSFT.CUM <- cumulated(MSFT.RET, method = "discrete") head(cbind(MSFT.CL, MSFT.CUM))