R: Number of Periods in Data

ndays {xts} | R Documentation

## Number of Periods in Data

### Description

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

### 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

### Author(s)

Jeffrey A. Ryan

### See Also

`endpoints`

### Examples

    ## Not run:
    getSymbols("QQQQ")

    ndays(QQQQ)
    nweeks(QQQQ)

    ## End(Not run)

[Package xts version 0.12.1 Index]