periodical  R Documentation 
Computes periodical statistics back to a given period.
endOfPeriodSeries(x,
nYearsBack = c("1y", "2y", "3y", "5y", "10y", "YTD"))
endOfPeriodStats(x,
nYearsBack = c("1y", "2y", "3y", "5y", "10y", "YTD"))
endOfPeriodBenchmarks(x, benchmark = ncol(x),
nYearsBack = c("1y", "2y", "3y", "5y", "10y", "YTD"))
x 
an endofmonth recorded multivariate 
nYearsBack 
a period string. How long back should the series be treated? Options include values from 1 year to 10 years, and yeartodate: "1y", "2y", "3y", "5y", "10y", "YTD". 
benchmark 
an integer giving the position of the benchmark series in

endOfPeriodSeries
extract the data for the last few years, as
specified by argument nYearsBack
.
endOfPeriodStats
computes basic exploratory statistics for the
last few years in the data.
endOfPeriodBenchmarks
returns benchmarks back to a given
period.
x
must be end of month data. Such series can be created using
functions like align
, alignDailySeries
,
daily2monthly
.
for endOfPeriodSeries
, a "timeSeries"
,
for endOfPeriodStats
, a data frame,
for endOfPeriodBenchmarks
 currently NULL
(invisibly),
the function is unfinished.
## load series: column 1:3 Swiss market, column 8 (4) benchmark
x < 100 * LPP2005REC[, c(1:3, 8)]
colnames(x)
x < daily2monthly(x)
x
## Get the Monthly Series 
endOfPeriodSeries(x, nYearsBack="1y")
## Compute the Monthly Statistics
endOfPeriodStats(x, nYearsBack="1y")
## Compute the Benchmark
endOfPeriodBenchmarks(x, benchmark=4)
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