year_frac

yf2tind

<code>year_frac</code> computes year fraction corresponding to a time index.
<code>yf2tind</code> performs the reverse computation.

Provides an easy-to-use tind class representing time indices
of different types (years, quarters, months, ISO 8601 weeks, dates,
time of day, date-time, and arbitrary integer/numeric indices).
Includes an extensive collection of functions for calendrical computations
(including business applications), index conversions, index parsing,
and other operations. Auxiliary classes representing time differences and
time intervals (with set operations and index matching functionality) are
also provided. All routines have been optimised for speed in order
to facilitate computations on large datasets. More details regarding
calendars in general and calendrical algorithms can be found in
"Calendar FAQ" by Claus Tøndering <https://www.tondering.dk/claus/calendar.html>.

Grzegorz Klima

tind

A Common Representation of Time Indices of Different Types

year_frac function

<dl><dt>x</dt>
<dd>an object of <code>tind</code> class or an R object coercible to it
for <code>year_frac</code>, a numeric vector for <code>yf2tind</code>.</dd>
<dt>type</dt>
<dd>a character value determining time index type
(<code>y</code> - years, <code>q</code> - quarters, <code>m</code> - months,
<code>w</code> - weeks, <code>d</code> - dates, <code>t</code> - date-time).</dd>
<dt>tz</dt>
<dd>(optional) a character value determining the time zone (the default
<code>NULL</code> is interpreted as the system time zone).
See <code>tzone</code> documentation for information on time zones.</dd></dl>

Arguments

Converting Time Indices to Year Fractions and Back — year_frac

<dl>

<dt>x</dt>
<dd>an object of <code>tind</code> class or an R object coercible to it
for <code>year_frac</code>, a numeric vector for <code>yf2tind</code>.</dd>


<dt>type</dt>
<dd>a character value determining time index type
(<code>y</code> - years, <code>q</code> - quarters, <code>m</code> - months,
<code>w</code> - weeks, <code>d</code> - dates, <code>t</code> - date-time).</dd>


<dt>tz</dt>
<dd>(optional) a character value determining the time zone (the default
<code>NULL</code> is interpreted as the system time zone).
See <code>tzone</code> documentation for information on time zones.</dd>

</dl>

year_frac: Converting Time Indices to Year Fractions and Back

Description

Usage

Value

Arguments

Details

See Also

Examples