ndays

0th

Percentile

Number of Periods in Data

Calculate the number of specified periods in a given time series like data object.

Keywords
utilities
Usage
nseconds(x)
nminutes(x)
nhours(x)
ndays(x)
nweeks(x)
nmonths(x)
nquarters(x)
nyears(x)
Arguments
x

A time-based object

Details

Essentially a wrapper to endpoints with the appropriate period specified; the resulting value derived from counting the endpoints

As a compromise between simplicity and accuracy, the results will always round up to the nearest complete period. So n**** - 1 will return the completed periods.

For finer grain detail one should call a higher frequency n**** function.

An alternative summary can be found with periodicity and unclass(periodicity(x)).

Value

The number of observations for the period type specified

See Also

endpoints

Aliases
  • nseconds
  • nminutes
  • nhours
  • ndays
  • nweeks
  • nmonths
  • nquarters
  • nyears
Examples
library(xts) # NOT RUN { getSymbols("QQQQ") ndays(QQQQ) nweeks(QQQQ) # }
Documentation reproduced from package xts, version 0.9-7, License: GPL (>= 2)

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