Create a Sequence or Range of Times

A function to create a vector of time-based objects suitable for indexing an xts object, given a string conforming to the ISO-8601 time and date standard for range-based specification. The resulting series can be of any class supported by xts, including POSIXct, Date, chron, timeDate, yearmon, and yearqtr.

Usage

timeBasedRange(x, ...)

timeBasedSeq(x, retclass = NULL, length.out = NULL)

Arguments

x: An ISO-8601 time-date range string.
...: Unused.
retclass: The return class desired.
length.out: Passed to seq() internally.

Value

timeBasedSeq() returns a vector of time-based observations. timeBasedRange() returns a one or two element numeric vector representing the start and end number of seconds since epoch (1970-01-01).

When retclass = NULL, the result of timeBasedSeq() is a named list containing elements "from", "to", "by" and "length.out".

Details

timeBasedRange() creates a one or two element numeric vector representing the start and end number of seconds since epoch (1970-01-01). For internal use.

timeBasedSeq() creates sequences of time-based observations using strings formatted according to the ISO-8601 specification. The general format is from/to/by or from::to::by, where to and by are optional when the 'length.out' argument is specified.

The from and to elements of the string must be left-specified with respect to the standard CCYYMMDD HHMMSS form. All dates/times specified will be set to either the earliest point (from) or the latest (to), to the given the level of specificity. For example, ‘1999’ in the from field would set the start to the beginning of 1999. ‘1999’ in the to field would set the end to the end of 1999.

The amount of resolution in the result is determined by the resolution of the from and to component, unless the optional by component is specified.

For example, timeBasedSeq("1999/2008") returns a vector of Dates for January 1st of each year. timeBasedSeq("199501/1996") returns a yearmon vector of 24 months in 1995 and 1996. And timeBasedSeq("19950101/1996") creates a Date vector for all the days in those two years.

The optional by field (the third delimited element to the string), will the resolution heuristic described above and will use the specified by resolution. The possible values for by are: 'Y' (years), 'm' (months), 'd' (days), 'H' (hours), 'M' (minutes), 'S' (seconds). Sub-second resolutions are not supported.

References

International Organization for Standardization: ISO 8601 https://www.iso.org

Author

Jeffrey A. Ryan

Examples


timeBasedSeq('1999/2008')
#>  [1] "1999-01-01" "2000-01-01" "2001-01-01" "2002-01-01" "2003-01-01"
#>  [6] "2004-01-01" "2005-01-01" "2006-01-01" "2007-01-01" "2008-01-01"
timeBasedSeq('199901/2008')
#>   [1] "Jan 1999" "Feb 1999" "Mar 1999" "Apr 1999" "May 1999" "Jun 1999"
#>   [7] "Jul 1999" "Aug 1999" "Sep 1999" "Oct 1999" "Nov 1999" "Dec 1999"
#>  [13] "Jan 2000" "Feb 2000" "Mar 2000" "Apr 2000" "May 2000" "Jun 2000"
#>  [19] "Jul 2000" "Aug 2000" "Sep 2000" "Oct 2000" "Nov 2000" "Dec 2000"
#>  [25] "Jan 2001" "Feb 2001" "Mar 2001" "Apr 2001" "May 2001" "Jun 2001"
#>  [31] "Jul 2001" "Aug 2001" "Sep 2001" "Oct 2001" "Nov 2001" "Dec 2001"
#>  [37] "Jan 2002" "Feb 2002" "Mar 2002" "Apr 2002" "May 2002" "Jun 2002"
#>  [43] "Jul 2002" "Aug 2002" "Sep 2002" "Oct 2002" "Nov 2002" "Dec 2002"
#>  [49] "Jan 2003" "Feb 2003" "Mar 2003" "Apr 2003" "May 2003" "Jun 2003"
#>  [55] "Jul 2003" "Aug 2003" "Sep 2003" "Oct 2003" "Nov 2003" "Dec 2003"
#>  [61] "Jan 2004" "Feb 2004" "Mar 2004" "Apr 2004" "May 2004" "Jun 2004"
#>  [67] "Jul 2004" "Aug 2004" "Sep 2004" "Oct 2004" "Nov 2004" "Dec 2004"
#>  [73] "Jan 2005" "Feb 2005" "Mar 2005" "Apr 2005" "May 2005" "Jun 2005"
#>  [79] "Jul 2005" "Aug 2005" "Sep 2005" "Oct 2005" "Nov 2005" "Dec 2005"
#>  [85] "Jan 2006" "Feb 2006" "Mar 2006" "Apr 2006" "May 2006" "Jun 2006"
#>  [91] "Jul 2006" "Aug 2006" "Sep 2006" "Oct 2006" "Nov 2006" "Dec 2006"
#>  [97] "Jan 2007" "Feb 2007" "Mar 2007" "Apr 2007" "May 2007" "Jun 2007"
#> [103] "Jul 2007" "Aug 2007" "Sep 2007" "Oct 2007" "Nov 2007" "Dec 2007"
#> [109] "Jan 2008" "Feb 2008" "Mar 2008" "Apr 2008" "May 2008" "Jun 2008"
#> [115] "Jul 2008" "Aug 2008" "Sep 2008" "Oct 2008" "Nov 2008" "Dec 2008"
timeBasedSeq('199901/2008/d')
#>    [1] "Jan 1999" "Jan 1999" "Jan 1999" "Jan 1999" "Jan 1999" "Jan 1999"
#>    [7] "Jan 1999" "Jan 1999" "Jan 1999" "Jan 1999" "Jan 1999" "Jan 1999"
#>   [13] "Jan 1999" "Jan 1999" "Jan 1999" "Jan 1999" "Jan 1999" "Jan 1999"
#>   [19] "Jan 1999" "Jan 1999" "Jan 1999" "Jan 1999" "Jan 1999" "Jan 1999"
#>   [25] "Jan 1999" "Jan 1999" "Jan 1999" "Jan 1999" "Jan 1999" "Jan 1999"
#>   [31] "Jan 1999" "Feb 1999" "Feb 1999" "Feb 1999" "Feb 1999" "Feb 1999"
#>   [37] "Feb 1999" "Feb 1999" "Feb 1999" "Feb 1999" "Feb 1999" "Feb 1999"
#>   [43] "Feb 1999" "Feb 1999" "Feb 1999" "Feb 1999" "Feb 1999" "Feb 1999"
#>   [49] "Feb 1999" "Feb 1999" "Feb 1999" "Feb 1999" "Feb 1999" "Feb 1999"
#>   [55] "Feb 1999" "Feb 1999" "Feb 1999" "Feb 1999" "Feb 1999" "Mar 1999"
#>   [61] "Mar 1999" "Mar 1999" "Mar 1999" "Mar 1999" "Mar 1999" "Mar 1999"
#>   [67] "Mar 1999" "Mar 1999" "Mar 1999" "Mar 1999" "Mar 1999" "Mar 1999"
#>   [73] "Mar 1999" "Mar 1999" "Mar 1999" "Mar 1999" "Mar 1999" "Mar 1999"
#>   [79] "Mar 1999" "Mar 1999" "Mar 1999" "Mar 1999" "Mar 1999" "Mar 1999"
#>   [85] "Mar 1999" "Mar 1999" "Mar 1999" "Mar 1999" "Mar 1999" "Mar 1999"
#>   [91] "Apr 1999" "Apr 1999" "Apr 1999" "Apr 1999" "Apr 1999" "Apr 1999"
#>   [97] "Apr 1999" "Apr 1999" "Apr 1999" "Apr 1999" "Apr 1999" "Apr 1999"
#>  [103] "Apr 1999" "Apr 1999" "Apr 1999" "Apr 1999" "Apr 1999" "Apr 1999"
#>  [109] "Apr 1999" "Apr 1999" "Apr 1999" "Apr 1999" "Apr 1999" "Apr 1999"
#>  [115] "Apr 1999" "Apr 1999" "Apr 1999" "Apr 1999" "Apr 1999" "Apr 1999"
#>  [121] "May 1999" "May 1999" "May 1999" "May 1999" "May 1999" "May 1999"
#>  [127] "May 1999" "May 1999" "May 1999" "May 1999" "May 1999" "May 1999"
#>  [133] "May 1999" "May 1999" "May 1999" "May 1999" "May 1999" "May 1999"
#>  [139] "May 1999" "May 1999" "May 1999" "May 1999" "May 1999" "May 1999"
#>  [145] "May 1999" "May 1999" "May 1999" "May 1999" "May 1999" "May 1999"
#>  [151] "May 1999" "Jun 1999" "Jun 1999" "Jun 1999" "Jun 1999" "Jun 1999"
#>  [157] "Jun 1999" "Jun 1999" "Jun 1999" "Jun 1999" "Jun 1999" "Jun 1999"
#>  [163] "Jun 1999" "Jun 1999" "Jun 1999" "Jun 1999" "Jun 1999" "Jun 1999"
#>  [169] "Jun 1999" "Jun 1999" "Jun 1999" "Jun 1999" "Jun 1999" "Jun 1999"
#>  [175] "Jun 1999" "Jun 1999" "Jun 1999" "Jun 1999" "Jun 1999" "Jun 1999"
#>  [181] "Jun 1999" "Jul 1999" "Jul 1999" "Jul 1999" "Jul 1999" "Jul 1999"
#>  [187] "Jul 1999" "Jul 1999" "Jul 1999" "Jul 1999" "Jul 1999" "Jul 1999"
#>  [193] "Jul 1999" "Jul 1999" "Jul 1999" "Jul 1999" "Jul 1999" "Jul 1999"
#>  [199] "Jul 1999" "Jul 1999" "Jul 1999" "Jul 1999" "Jul 1999" "Jul 1999"
#>  [205] "Jul 1999" "Jul 1999" "Jul 1999" "Jul 1999" "Jul 1999" "Jul 1999"
#>  [211] "Jul 1999" "Jul 1999" "Aug 1999" "Aug 1999" "Aug 1999" "Aug 1999"
#>  [217] "Aug 1999" "Aug 1999" "Aug 1999" "Aug 1999" "Aug 1999" "Aug 1999"
#>  [223] "Aug 1999" "Aug 1999" "Aug 1999" "Aug 1999" "Aug 1999" "Aug 1999"
#>  [229] "Aug 1999" "Aug 1999" "Aug 1999" "Aug 1999" "Aug 1999" "Aug 1999"
#>  [235] "Aug 1999" "Aug 1999" "Aug 1999" "Aug 1999" "Aug 1999" "Aug 1999"
#>  [241] "Aug 1999" "Aug 1999" "Aug 1999" "Sep 1999" "Sep 1999" "Sep 1999"
#>  [247] "Sep 1999" "Sep 1999" "Sep 1999" "Sep 1999" "Sep 1999" "Sep 1999"
#>  [253] "Sep 1999" "Sep 1999" "Sep 1999" "Sep 1999" "Sep 1999" "Sep 1999"
#>  [259] "Sep 1999" "Sep 1999" "Sep 1999" "Sep 1999" "Sep 1999" "Sep 1999"
#>  [265] "Sep 1999" "Sep 1999" "Sep 1999" "Sep 1999" "Sep 1999" "Sep 1999"
#>  [271] "Sep 1999" "Sep 1999" "Sep 1999" "Oct 1999" "Oct 1999" "Oct 1999"
#>  [277] "Oct 1999" "Oct 1999" "Oct 1999" "Oct 1999" "Oct 1999" "Oct 1999"
#>  [283] "Oct 1999" "Oct 1999" "Oct 1999" "Oct 1999" "Oct 1999" "Oct 1999"
#>  [289] "Oct 1999" "Oct 1999" "Oct 1999" "Oct 1999" "Oct 1999" "Oct 1999"
#>  [295] "Oct 1999" "Oct 1999" "Oct 1999" "Oct 1999" "Oct 1999" "Oct 1999"
#>  [301] "Oct 1999" "Oct 1999" "Oct 1999" "Oct 1999" "Nov 1999" "Nov 1999"
#>  [307] "Nov 1999" "Nov 1999" "Nov 1999" "Nov 1999" "Nov 1999" "Nov 1999"
#>  [313] "Nov 1999" "Nov 1999" "Nov 1999" "Nov 1999" "Nov 1999" "Nov 1999"
#>  [319] "Nov 1999" "Nov 1999" "Nov 1999" "Nov 1999" "Nov 1999" "Nov 1999"
#>  [325] "Nov 1999" "Nov 1999" "Nov 1999" "Nov 1999" "Nov 1999" "Nov 1999"
#>  [331] "Nov 1999" "Nov 1999" "Nov 1999" "Nov 1999" "Dec 1999" "Dec 1999"
#>  [337] "Dec 1999" "Dec 1999" "Dec 1999" "Dec 1999" "Dec 1999" "Dec 1999"
#>  [343] "Dec 1999" "Dec 1999" "Dec 1999" "Dec 1999" "Dec 1999" "Dec 1999"
#>  [349] "Dec 1999" "Dec 1999" "Dec 1999" "Dec 1999" "Dec 1999" "Dec 1999"
#>  [355] "Dec 1999" "Dec 1999" "Dec 1999" "Dec 1999" "Dec 1999" "Dec 1999"
#>  [361] "Dec 1999" "Dec 1999" "Dec 1999" "Dec 1999" "Dec 1999" "Jan 2000"
#>  [367] "Jan 2000" "Jan 2000" "Jan 2000" "Jan 2000" "Jan 2000" "Jan 2000"
#>  [373] "Jan 2000" "Jan 2000" "Jan 2000" "Jan 2000" "Jan 2000" "Jan 2000"
#>  [379] "Jan 2000" "Jan 2000" "Jan 2000" "Jan 2000" "Jan 2000" "Jan 2000"
#>  [385] "Jan 2000" "Jan 2000" "Jan 2000" "Jan 2000" "Jan 2000" "Jan 2000"
#>  [391] "Jan 2000" "Jan 2000" "Jan 2000" "Jan 2000" "Jan 2000" "Jan 2000"
#>  [397] "Feb 2000" "Feb 2000" "Feb 2000" "Feb 2000" "Feb 2000" "Feb 2000"
#>  [403] "Feb 2000" "Feb 2000" "Feb 2000" "Feb 2000" "Feb 2000" "Feb 2000"
#>  [409] "Feb 2000" "Feb 2000" "Feb 2000" "Feb 2000" "Feb 2000" "Feb 2000"
#>  [415] "Feb 2000" "Feb 2000" "Feb 2000" "Feb 2000" "Feb 2000" "Feb 2000"
#>  [421] "Feb 2000" "Feb 2000" "Feb 2000" "Feb 2000" "Feb 2000" "Mar 2000"
#>  [427] "Mar 2000" "Mar 2000" "Mar 2000" "Mar 2000" "Mar 2000" "Mar 2000"
#>  [433] "Mar 2000" "Mar 2000" "Mar 2000" "Mar 2000" "Mar 2000" "Mar 2000"
#>  [439] "Mar 2000" "Mar 2000" "Mar 2000" "Mar 2000" "Mar 2000" "Mar 2000"
#>  [445] "Mar 2000" "Mar 2000" "Mar 2000" "Mar 2000" "Mar 2000" "Mar 2000"
#>  [451] "Mar 2000" "Mar 2000" "Mar 2000" "Mar 2000" "Mar 2000" "Mar 2000"
#>  [457] "Apr 2000" "Apr 2000" "Apr 2000" "Apr 2000" "Apr 2000" "Apr 2000"
#>  [463] "Apr 2000" "Apr 2000" "Apr 2000" "Apr 2000" "Apr 2000" "Apr 2000"
#>  [469] "Apr 2000" "Apr 2000" "Apr 2000" "Apr 2000" "Apr 2000" "Apr 2000"
#>  [475] "Apr 2000" "Apr 2000" "Apr 2000" "Apr 2000" "Apr 2000" "Apr 2000"
#>  [481] "Apr 2000" "Apr 2000" "Apr 2000" "Apr 2000" "Apr 2000" "Apr 2000"
#>  [487] "May 2000" "May 2000" "May 2000" "May 2000" "May 2000" "May 2000"
#>  [493] "May 2000" "May 2000" "May 2000" "May 2000" "May 2000" "May 2000"
#>  [499] "May 2000" "May 2000" "May 2000" "May 2000" "May 2000" "May 2000"
#>  [505] "May 2000" "May 2000" "May 2000" "May 2000" "May 2000" "May 2000"
#>  [511] "May 2000" "May 2000" "May 2000" "May 2000" "May 2000" "May 2000"
#>  [517] "May 2000" "Jun 2000" "Jun 2000" "Jun 2000" "Jun 2000" "Jun 2000"
#>  [523] "Jun 2000" "Jun 2000" "Jun 2000" "Jun 2000" "Jun 2000" "Jun 2000"
#>  [529] "Jun 2000" "Jun 2000" "Jun 2000" "Jun 2000" "Jun 2000" "Jun 2000"
#>  [535] "Jun 2000" "Jun 2000" "Jun 2000" "Jun 2000" "Jun 2000" "Jun 2000"
#>  [541] "Jun 2000" "Jun 2000" "Jun 2000" "Jun 2000" "Jun 2000" "Jun 2000"
#>  [547] "Jun 2000" "Jul 2000" "Jul 2000" "Jul 2000" "Jul 2000" "Jul 2000"
#>  [553] "Jul 2000" "Jul 2000" "Jul 2000" "Jul 2000" "Jul 2000" "Jul 2000"
#>  [559] "Jul 2000" "Jul 2000" "Jul 2000" "Jul 2000" "Jul 2000" "Jul 2000"
#>  [565] "Jul 2000" "Jul 2000" "Jul 2000" "Jul 2000" "Jul 2000" "Jul 2000"
#>  [571] "Jul 2000" "Jul 2000" "Jul 2000" "Jul 2000" "Jul 2000" "Jul 2000"
#>  [577] "Jul 2000" "Jul 2000" "Aug 2000" "Aug 2000" "Aug 2000" "Aug 2000"
#>  [583] "Aug 2000" "Aug 2000" "Aug 2000" "Aug 2000" "Aug 2000" "Aug 2000"
#>  [589] "Aug 2000" "Aug 2000" "Aug 2000" "Aug 2000" "Aug 2000" "Aug 2000"
#>  [595] "Aug 2000" "Aug 2000" "Aug 2000" "Aug 2000" "Aug 2000" "Aug 2000"
#>  [601] "Aug 2000" "Aug 2000" "Aug 2000" "Aug 2000" "Aug 2000" "Aug 2000"
#>  [607] "Aug 2000" "Aug 2000" "Aug 2000" "Sep 2000" "Sep 2000" "Sep 2000"
#>  [613] "Sep 2000" "Sep 2000" "Sep 2000" "Sep 2000" "Sep 2000" "Sep 2000"
#>  [619] "Sep 2000" "Sep 2000" "Sep 2000" "Sep 2000" "Sep 2000" "Sep 2000"
#>  [625] "Sep 2000" "Sep 2000" "Sep 2000" "Sep 2000" "Sep 2000" "Sep 2000"
#>  [631] "Sep 2000" "Sep 2000" "Sep 2000" "Sep 2000" "Sep 2000" "Sep 2000"
#>  [637] "Sep 2000" "Sep 2000" "Sep 2000" "Oct 2000" "Oct 2000" "Oct 2000"
#>  [643] "Oct 2000" "Oct 2000" "Oct 2000" "Oct 2000" "Oct 2000" "Oct 2000"
#>  [649] "Oct 2000" "Oct 2000" "Oct 2000" "Oct 2000" "Oct 2000" "Oct 2000"
#>  [655] "Oct 2000" "Oct 2000" "Oct 2000" "Oct 2000" "Oct 2000" "Oct 2000"
#>  [661] "Oct 2000" "Oct 2000" "Oct 2000" "Oct 2000" "Oct 2000" "Oct 2000"
#>  [667] "Oct 2000" "Oct 2000" "Oct 2000" "Oct 2000" "Nov 2000" "Nov 2000"
#>  [673] "Nov 2000" "Nov 2000" "Nov 2000" "Nov 2000" "Nov 2000" "Nov 2000"
#>  [679] "Nov 2000" "Nov 2000" "Nov 2000" "Nov 2000" "Nov 2000" "Nov 2000"
#>  [685] "Nov 2000" "Nov 2000" "Nov 2000" "Nov 2000" "Nov 2000" "Nov 2000"
#>  [691] "Nov 2000" "Nov 2000" "Nov 2000" "Nov 2000" "Nov 2000" "Nov 2000"
#>  [697] "Nov 2000" "Nov 2000" "Nov 2000" "Nov 2000" "Dec 2000" "Dec 2000"
#>  [703] "Dec 2000" "Dec 2000" "Dec 2000" "Dec 2000" "Dec 2000" "Dec 2000"
#>  [709] "Dec 2000" "Dec 2000" "Dec 2000" "Dec 2000" "Dec 2000" "Dec 2000"
#>  [715] "Dec 2000" "Dec 2000" "Dec 2000" "Dec 2000" "Dec 2000" "Dec 2000"
#>  [721] "Dec 2000" "Dec 2000" "Dec 2000" "Dec 2000" "Dec 2000" "Dec 2000"
#>  [727] "Dec 2000" "Dec 2000" "Dec 2000" "Dec 2000" "Dec 2000" "Jan 2001"
#>  [733] "Jan 2001" "Jan 2001" "Jan 2001" "Jan 2001" "Jan 2001" "Jan 2001"
#>  [739] "Jan 2001" "Jan 2001" "Jan 2001" "Jan 2001" "Jan 2001" "Jan 2001"
#>  [745] "Jan 2001" "Jan 2001" "Jan 2001" "Jan 2001" "Jan 2001" "Jan 2001"
#>  [751] "Jan 2001" "Jan 2001" "Jan 2001" "Jan 2001" "Jan 2001" "Jan 2001"
#>  [757] "Jan 2001" "Jan 2001" "Jan 2001" "Jan 2001" "Jan 2001" "Jan 2001"
#>  [763] "Feb 2001" "Feb 2001" "Feb 2001" "Feb 2001" "Feb 2001" "Feb 2001"
#>  [769] "Feb 2001" "Feb 2001" "Feb 2001" "Feb 2001" "Feb 2001" "Feb 2001"
#>  [775] "Feb 2001" "Feb 2001" "Feb 2001" "Feb 2001" "Feb 2001" "Feb 2001"
#>  [781] "Feb 2001" "Feb 2001" "Feb 2001" "Feb 2001" "Feb 2001" "Feb 2001"
#>  [787] "Feb 2001" "Feb 2001" "Feb 2001" "Feb 2001" "Mar 2001" "Mar 2001"
#>  [793] "Mar 2001" "Mar 2001" "Mar 2001" "Mar 2001" "Mar 2001" "Mar 2001"
#>  [799] "Mar 2001" "Mar 2001" "Mar 2001" "Mar 2001" "Mar 2001" "Mar 2001"
#>  [805] "Mar 2001" "Mar 2001" "Mar 2001" "Mar 2001" "Mar 2001" "Mar 2001"
#>  [811] "Mar 2001" "Mar 2001" "Mar 2001" "Mar 2001" "Mar 2001" "Mar 2001"
#>  [817] "Mar 2001" "Mar 2001" "Mar 2001" "Mar 2001" "Mar 2001" "Apr 2001"
#>  [823] "Apr 2001" "Apr 2001" "Apr 2001" "Apr 2001" "Apr 2001" "Apr 2001"
#>  [829] "Apr 2001" "Apr 2001" "Apr 2001" "Apr 2001" "Apr 2001" "Apr 2001"
#>  [835] "Apr 2001" "Apr 2001" "Apr 2001" "Apr 2001" "Apr 2001" "Apr 2001"
#>  [841] "Apr 2001" "Apr 2001" "Apr 2001" "Apr 2001" "Apr 2001" "Apr 2001"
#>  [847] "Apr 2001" "Apr 2001" "Apr 2001" "Apr 2001" "Apr 2001" "May 2001"
#>  [853] "May 2001" "May 2001" "May 2001" "May 2001" "May 2001" "May 2001"
#>  [859] "May 2001" "May 2001" "May 2001" "May 2001" "May 2001" "May 2001"
#>  [865] "May 2001" "May 2001" "May 2001" "May 2001" "May 2001" "May 2001"
#>  [871] "May 2001" "May 2001" "May 2001" "May 2001" "May 2001" "May 2001"
#>  [877] "May 2001" "May 2001" "May 2001" "May 2001" "May 2001" "May 2001"
#>  [883] "Jun 2001" "Jun 2001" "Jun 2001" "Jun 2001" "Jun 2001" "Jun 2001"
#>  [889] "Jun 2001" "Jun 2001" "Jun 2001" "Jun 2001" "Jun 2001" "Jun 2001"
#>  [895] "Jun 2001" "Jun 2001" "Jun 2001" "Jun 2001" "Jun 2001" "Jun 2001"
#>  [901] "Jun 2001" "Jun 2001" "Jun 2001" "Jun 2001" "Jun 2001" "Jun 2001"
#>  [907] "Jun 2001" "Jun 2001" "Jun 2001" "Jun 2001" "Jun 2001" "Jun 2001"
#>  [913] "Jul 2001" "Jul 2001" "Jul 2001" "Jul 2001" "Jul 2001" "Jul 2001"
#>  [919] "Jul 2001" "Jul 2001" "Jul 2001" "Jul 2001" "Jul 2001" "Jul 2001"
#>  [925] "Jul 2001" "Jul 2001" "Jul 2001" "Jul 2001" "Jul 2001" "Jul 2001"
#>  [931] "Jul 2001" "Jul 2001" "Jul 2001" "Jul 2001" "Jul 2001" "Jul 2001"
#>  [937] "Jul 2001" "Jul 2001" "Jul 2001" "Jul 2001" "Jul 2001" "Jul 2001"
#>  [943] "Jul 2001" "Aug 2001" "Aug 2001" "Aug 2001" "Aug 2001" "Aug 2001"
#>  [949] "Aug 2001" "Aug 2001" "Aug 2001" "Aug 2001" "Aug 2001" "Aug 2001"
#>  [955] "Aug 2001" "Aug 2001" "Aug 2001" "Aug 2001" "Aug 2001" "Aug 2001"
#>  [961] "Aug 2001" "Aug 2001" "Aug 2001" "Aug 2001" "Aug 2001" "Aug 2001"
#>  [967] "Aug 2001" "Aug 2001" "Aug 2001" "Aug 2001" "Aug 2001" "Aug 2001"
#>  [973] "Aug 2001" "Aug 2001" "Sep 2001" "Sep 2001" "Sep 2001" "Sep 2001"
#>  [979] "Sep 2001" "Sep 2001" "Sep 2001" "Sep 2001" "Sep 2001" "Sep 2001"
#>  [985] "Sep 2001" "Sep 2001" "Sep 2001" "Sep 2001" "Sep 2001" "Sep 2001"
#>  [991] "Sep 2001" "Sep 2001" "Sep 2001" "Sep 2001" "Sep 2001" "Sep 2001"
#>  [997] "Sep 2001" "Sep 2001" "Sep 2001" "Sep 2001" "Sep 2001" "Sep 2001"
#> [1003] "Sep 2001" "Sep 2001" "Oct 2001" "Oct 2001" "Oct 2001" "Oct 2001"
#> [1009] "Oct 2001" "Oct 2001" "Oct 2001" "Oct 2001" "Oct 2001" "Oct 2001"
#> [1015] "Oct 2001" "Oct 2001" "Oct 2001" "Oct 2001" "Oct 2001" "Oct 2001"
#> [1021] "Oct 2001" "Oct 2001" "Oct 2001" "Oct 2001" "Oct 2001" "Oct 2001"
#> [1027] "Oct 2001" "Oct 2001" "Oct 2001" "Oct 2001" "Oct 2001" "Oct 2001"
#> [1033] "Oct 2001" "Oct 2001" "Oct 2001" "Nov 2001" "Nov 2001" "Nov 2001"
#> [1039] "Nov 2001" "Nov 2001" "Nov 2001" "Nov 2001" "Nov 2001" "Nov 2001"
#> [1045] "Nov 2001" "Nov 2001" "Nov 2001" "Nov 2001" "Nov 2001" "Nov 2001"
#> [1051] "Nov 2001" "Nov 2001" "Nov 2001" "Nov 2001" "Nov 2001" "Nov 2001"
#> [1057] "Nov 2001" "Nov 2001" "Nov 2001" "Nov 2001" "Nov 2001" "Nov 2001"
#> [1063] "Nov 2001" "Nov 2001" "Nov 2001" "Dec 2001" "Dec 2001" "Dec 2001"
#> [1069] "Dec 2001" "Dec 2001" "Dec 2001" "Dec 2001" "Dec 2001" "Dec 2001"
#> [1075] "Dec 2001" "Dec 2001" "Dec 2001" "Dec 2001" "Dec 2001" "Dec 2001"
#> [1081] "Dec 2001" "Dec 2001" "Dec 2001" "Dec 2001" "Dec 2001" "Dec 2001"
#> [1087] "Dec 2001" "Dec 2001" "Dec 2001" "Dec 2001" "Dec 2001" "Dec 2001"
#> [1093] "Dec 2001" "Dec 2001" "Dec 2001" "Dec 2001" "Jan 2002" "Jan 2002"
#> [1099] "Jan 2002" "Jan 2002" "Jan 2002" "Jan 2002" "Jan 2002" "Jan 2002"
#> [1105] "Jan 2002" "Jan 2002" "Jan 2002" "Jan 2002" "Jan 2002" "Jan 2002"
#> [1111] "Jan 2002" "Jan 2002" "Jan 2002" "Jan 2002" "Jan 2002" "Jan 2002"
#> [1117] "Jan 2002" "Jan 2002" "Jan 2002" "Jan 2002" "Jan 2002" "Jan 2002"
#> [1123] "Jan 2002" "Jan 2002" "Jan 2002" "Jan 2002" "Jan 2002" "Feb 2002"
#> [1129] "Feb 2002" "Feb 2002" "Feb 2002" "Feb 2002" "Feb 2002" "Feb 2002"
#> [1135] "Feb 2002" "Feb 2002" "Feb 2002" "Feb 2002" "Feb 2002" "Feb 2002"
#> [1141] "Feb 2002" "Feb 2002" "Feb 2002" "Feb 2002" "Feb 2002" "Feb 2002"
#> [1147] "Feb 2002" "Feb 2002" "Feb 2002" "Feb 2002" "Feb 2002" "Feb 2002"
#> [1153] "Feb 2002" "Feb 2002" "Feb 2002" "Mar 2002" "Mar 2002" "Mar 2002"
#> [1159] "Mar 2002" "Mar 2002" "Mar 2002" "Mar 2002" "Mar 2002" "Mar 2002"
#> [1165] "Mar 2002" "Mar 2002" "Mar 2002" "Mar 2002" "Mar 2002" "Mar 2002"
#> [1171] "Mar 2002" "Mar 2002" "Mar 2002" "Mar 2002" "Mar 2002" "Mar 2002"
#> [1177] "Mar 2002" "Mar 2002" "Mar 2002" "Mar 2002" "Mar 2002" "Mar 2002"
#> [1183] "Mar 2002" "Mar 2002" "Mar 2002" "Mar 2002" "Apr 2002" "Apr 2002"
#> [1189] "Apr 2002" "Apr 2002" "Apr 2002" "Apr 2002" "Apr 2002" "Apr 2002"
#> [1195] "Apr 2002" "Apr 2002" "Apr 2002" "Apr 2002" "Apr 2002" "Apr 2002"
#> [1201] "Apr 2002" "Apr 2002" "Apr 2002" "Apr 2002" "Apr 2002" "Apr 2002"
#> [1207] "Apr 2002" "Apr 2002" "Apr 2002" "Apr 2002" "Apr 2002" "Apr 2002"
#> [1213] "Apr 2002" "Apr 2002" "Apr 2002" "Apr 2002" "May 2002" "May 2002"
#> [1219] "May 2002" "May 2002" "May 2002" "May 2002" "May 2002" "May 2002"
#> [1225] "May 2002" "May 2002" "May 2002" "May 2002" "May 2002" "May 2002"
#> [1231] "May 2002" "May 2002" "May 2002" "May 2002" "May 2002" "May 2002"
#> [1237] "May 2002" "May 2002" "May 2002" "May 2002" "May 2002" "May 2002"
#> [1243] "May 2002" "May 2002" "May 2002" "May 2002" "May 2002" "Jun 2002"
#> [1249] "Jun 2002" "Jun 2002" "Jun 2002" "Jun 2002" "Jun 2002" "Jun 2002"
#> [1255] "Jun 2002" "Jun 2002" "Jun 2002" "Jun 2002" "Jun 2002" "Jun 2002"
#> [1261] "Jun 2002" "Jun 2002" "Jun 2002" "Jun 2002" "Jun 2002" "Jun 2002"
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#> [2779] "Aug 2006" "Aug 2006" "Aug 2006" "Aug 2006" "Aug 2006" "Aug 2006"
#> [2785] "Aug 2006" "Aug 2006" "Aug 2006" "Aug 2006" "Aug 2006" "Aug 2006"
#> [2791] "Aug 2006" "Aug 2006" "Aug 2006" "Aug 2006" "Aug 2006" "Aug 2006"
#> [2797] "Aug 2006" "Aug 2006" "Aug 2006" "Aug 2006" "Sep 2006" "Sep 2006"
#> [2803] "Sep 2006" "Sep 2006" "Sep 2006" "Sep 2006" "Sep 2006" "Sep 2006"
#> [2809] "Sep 2006" "Sep 2006" "Sep 2006" "Sep 2006" "Sep 2006" "Sep 2006"
#> [2815] "Sep 2006" "Sep 2006" "Sep 2006" "Sep 2006" "Sep 2006" "Sep 2006"
#> [2821] "Sep 2006" "Sep 2006" "Sep 2006" "Sep 2006" "Sep 2006" "Sep 2006"
#> [2827] "Sep 2006" "Sep 2006" "Sep 2006" "Sep 2006" "Oct 2006" "Oct 2006"
#> [2833] "Oct 2006" "Oct 2006" "Oct 2006" "Oct 2006" "Oct 2006" "Oct 2006"
#> [2839] "Oct 2006" "Oct 2006" "Oct 2006" "Oct 2006" "Oct 2006" "Oct 2006"
#> [2845] "Oct 2006" "Oct 2006" "Oct 2006" "Oct 2006" "Oct 2006" "Oct 2006"
#> [2851] "Oct 2006" "Oct 2006" "Oct 2006" "Oct 2006" "Oct 2006" "Oct 2006"
#> [2857] "Oct 2006" "Oct 2006" "Oct 2006" "Oct 2006" "Oct 2006" "Nov 2006"
#> [2863] "Nov 2006" "Nov 2006" "Nov 2006" "Nov 2006" "Nov 2006" "Nov 2006"
#> [2869] "Nov 2006" "Nov 2006" "Nov 2006" "Nov 2006" "Nov 2006" "Nov 2006"
#> [2875] "Nov 2006" "Nov 2006" "Nov 2006" "Nov 2006" "Nov 2006" "Nov 2006"
#> [2881] "Nov 2006" "Nov 2006" "Nov 2006" "Nov 2006" "Nov 2006" "Nov 2006"
#> [2887] "Nov 2006" "Nov 2006" "Nov 2006" "Nov 2006" "Nov 2006" "Dec 2006"
#> [2893] "Dec 2006" "Dec 2006" "Dec 2006" "Dec 2006" "Dec 2006" "Dec 2006"
#> [2899] "Dec 2006" "Dec 2006" "Dec 2006" "Dec 2006" "Dec 2006" "Dec 2006"
#> [2905] "Dec 2006" "Dec 2006" "Dec 2006" "Dec 2006" "Dec 2006" "Dec 2006"
#> [2911] "Dec 2006" "Dec 2006" "Dec 2006" "Dec 2006" "Dec 2006" "Dec 2006"
#> [2917] "Dec 2006" "Dec 2006" "Dec 2006" "Dec 2006" "Dec 2006" "Dec 2006"
#> [2923] "Jan 2007" "Jan 2007" "Jan 2007" "Jan 2007" "Jan 2007" "Jan 2007"
#> [2929] "Jan 2007" "Jan 2007" "Jan 2007" "Jan 2007" "Jan 2007" "Jan 2007"
#> [2935] "Jan 2007" "Jan 2007" "Jan 2007" "Jan 2007" "Jan 2007" "Jan 2007"
#> [2941] "Jan 2007" "Jan 2007" "Jan 2007" "Jan 2007" "Jan 2007" "Jan 2007"
#> [2947] "Jan 2007" "Jan 2007" "Jan 2007" "Jan 2007" "Jan 2007" "Jan 2007"
#> [2953] "Jan 2007" "Feb 2007" "Feb 2007" "Feb 2007" "Feb 2007" "Feb 2007"
#> [2959] "Feb 2007" "Feb 2007" "Feb 2007" "Feb 2007" "Feb 2007" "Feb 2007"
#> [2965] "Feb 2007" "Feb 2007" "Feb 2007" "Feb 2007" "Feb 2007" "Feb 2007"
#> [2971] "Feb 2007" "Feb 2007" "Feb 2007" "Feb 2007" "Feb 2007" "Feb 2007"
#> [2977] "Feb 2007" "Feb 2007" "Feb 2007" "Feb 2007" "Feb 2007" "Mar 2007"
#> [2983] "Mar 2007" "Mar 2007" "Mar 2007" "Mar 2007" "Mar 2007" "Mar 2007"
#> [2989] "Mar 2007" "Mar 2007" "Mar 2007" "Mar 2007" "Mar 2007" "Mar 2007"
#> [2995] "Mar 2007" "Mar 2007" "Mar 2007" "Mar 2007" "Mar 2007" "Mar 2007"
#> [3001] "Mar 2007" "Mar 2007" "Mar 2007" "Mar 2007" "Mar 2007" "Mar 2007"
#> [3007] "Mar 2007" "Mar 2007" "Mar 2007" "Mar 2007" "Mar 2007" "Mar 2007"
#> [3013] "Apr 2007" "Apr 2007" "Apr 2007" "Apr 2007" "Apr 2007" "Apr 2007"
#> [3019] "Apr 2007" "Apr 2007" "Apr 2007" "Apr 2007" "Apr 2007" "Apr 2007"
#> [3025] "Apr 2007" "Apr 2007" "Apr 2007" "Apr 2007" "Apr 2007" "Apr 2007"
#> [3031] "Apr 2007" "Apr 2007" "Apr 2007" "Apr 2007" "Apr 2007" "Apr 2007"
#> [3037] "Apr 2007" "Apr 2007" "Apr 2007" "Apr 2007" "Apr 2007" "Apr 2007"
#> [3043] "May 2007" "May 2007" "May 2007" "May 2007" "May 2007" "May 2007"
#> [3049] "May 2007" "May 2007" "May 2007" "May 2007" "May 2007" "May 2007"
#> [3055] "May 2007" "May 2007" "May 2007" "May 2007" "May 2007" "May 2007"
#> [3061] "May 2007" "May 2007" "May 2007" "May 2007" "May 2007" "May 2007"
#> [3067] "May 2007" "May 2007" "May 2007" "May 2007" "May 2007" "May 2007"
#> [3073] "May 2007" "Jun 2007" "Jun 2007" "Jun 2007" "Jun 2007" "Jun 2007"
#> [3079] "Jun 2007" "Jun 2007" "Jun 2007" "Jun 2007" "Jun 2007" "Jun 2007"
#> [3085] "Jun 2007" "Jun 2007" "Jun 2007" "Jun 2007" "Jun 2007" "Jun 2007"
#> [3091] "Jun 2007" "Jun 2007" "Jun 2007" "Jun 2007" "Jun 2007" "Jun 2007"
#> [3097] "Jun 2007" "Jun 2007" "Jun 2007" "Jun 2007" "Jun 2007" "Jun 2007"
#> [3103] "Jun 2007" "Jul 2007" "Jul 2007" "Jul 2007" "Jul 2007" "Jul 2007"
#> [3109] "Jul 2007" "Jul 2007" "Jul 2007" "Jul 2007" "Jul 2007" "Jul 2007"
#> [3115] "Jul 2007" "Jul 2007" "Jul 2007" "Jul 2007" "Jul 2007" "Jul 2007"
#> [3121] "Jul 2007" "Jul 2007" "Jul 2007" "Jul 2007" "Jul 2007" "Jul 2007"
#> [3127] "Jul 2007" "Jul 2007" "Jul 2007" "Jul 2007" "Jul 2007" "Jul 2007"
#> [3133] "Jul 2007" "Jul 2007" "Aug 2007" "Aug 2007" "Aug 2007" "Aug 2007"
#> [3139] "Aug 2007" "Aug 2007" "Aug 2007" "Aug 2007" "Aug 2007" "Aug 2007"
#> [3145] "Aug 2007" "Aug 2007" "Aug 2007" "Aug 2007" "Aug 2007" "Aug 2007"
#> [3151] "Aug 2007" "Aug 2007" "Aug 2007" "Aug 2007" "Aug 2007" "Aug 2007"
#> [3157] "Aug 2007" "Aug 2007" "Aug 2007" "Aug 2007" "Aug 2007" "Aug 2007"
#> [3163] "Aug 2007" "Aug 2007" "Aug 2007" "Sep 2007" "Sep 2007" "Sep 2007"
#> [3169] "Sep 2007" "Sep 2007" "Sep 2007" "Sep 2007" "Sep 2007" "Sep 2007"
#> [3175] "Sep 2007" "Sep 2007" "Sep 2007" "Sep 2007" "Sep 2007" "Sep 2007"
#> [3181] "Sep 2007" "Sep 2007" "Sep 2007" "Sep 2007" "Sep 2007" "Sep 2007"
#> [3187] "Sep 2007" "Sep 2007" "Sep 2007" "Sep 2007" "Sep 2007" "Sep 2007"
#> [3193] "Sep 2007" "Sep 2007" "Sep 2007" "Oct 2007" "Oct 2007" "Oct 2007"
#> [3199] "Oct 2007" "Oct 2007" "Oct 2007" "Oct 2007" "Oct 2007" "Oct 2007"
#> [3205] "Oct 2007" "Oct 2007" "Oct 2007" "Oct 2007" "Oct 2007" "Oct 2007"
#> [3211] "Oct 2007" "Oct 2007" "Oct 2007" "Oct 2007" "Oct 2007" "Oct 2007"
#> [3217] "Oct 2007" "Oct 2007" "Oct 2007" "Oct 2007" "Oct 2007" "Oct 2007"
#> [3223] "Oct 2007" "Oct 2007" "Oct 2007" "Oct 2007" "Nov 2007" "Nov 2007"
#> [3229] "Nov 2007" "Nov 2007" "Nov 2007" "Nov 2007" "Nov 2007" "Nov 2007"
#> [3235] "Nov 2007" "Nov 2007" "Nov 2007" "Nov 2007" "Nov 2007" "Nov 2007"
#> [3241] "Nov 2007" "Nov 2007" "Nov 2007" "Nov 2007" "Nov 2007" "Nov 2007"
#> [3247] "Nov 2007" "Nov 2007" "Nov 2007" "Nov 2007" "Nov 2007" "Nov 2007"
#> [3253] "Nov 2007" "Nov 2007" "Nov 2007" "Nov 2007" "Dec 2007" "Dec 2007"
#> [3259] "Dec 2007" "Dec 2007" "Dec 2007" "Dec 2007" "Dec 2007" "Dec 2007"
#> [3265] "Dec 2007" "Dec 2007" "Dec 2007" "Dec 2007" "Dec 2007" "Dec 2007"
#> [3271] "Dec 2007" "Dec 2007" "Dec 2007" "Dec 2007" "Dec 2007" "Dec 2007"
#> [3277] "Dec 2007" "Dec 2007" "Dec 2007" "Dec 2007" "Dec 2007" "Dec 2007"
#> [3283] "Dec 2007" "Dec 2007" "Dec 2007" "Dec 2007" "Dec 2007" "Jan 2008"
#> [3289] "Jan 2008" "Jan 2008" "Jan 2008" "Jan 2008" "Jan 2008" "Jan 2008"
#> [3295] "Jan 2008" "Jan 2008" "Jan 2008" "Jan 2008" "Jan 2008" "Jan 2008"
#> [3301] "Jan 2008" "Jan 2008" "Jan 2008" "Jan 2008" "Jan 2008" "Jan 2008"
#> [3307] "Jan 2008" "Jan 2008" "Jan 2008" "Jan 2008" "Jan 2008" "Jan 2008"
#> [3313] "Jan 2008" "Jan 2008" "Jan 2008" "Jan 2008" "Jan 2008" "Jan 2008"
#> [3319] "Feb 2008" "Feb 2008" "Feb 2008" "Feb 2008" "Feb 2008" "Feb 2008"
#> [3325] "Feb 2008" "Feb 2008" "Feb 2008" "Feb 2008" "Feb 2008" "Feb 2008"
#> [3331] "Feb 2008" "Feb 2008" "Feb 2008" "Feb 2008" "Feb 2008" "Feb 2008"
#> [3337] "Feb 2008" "Feb 2008" "Feb 2008" "Feb 2008" "Feb 2008" "Feb 2008"
#> [3343] "Feb 2008" "Feb 2008" "Feb 2008" "Feb 2008" "Feb 2008" "Mar 2008"
#> [3349] "Mar 2008" "Mar 2008" "Mar 2008" "Mar 2008" "Mar 2008" "Mar 2008"
#> [3355] "Mar 2008" "Mar 2008" "Mar 2008" "Mar 2008" "Mar 2008" "Mar 2008"
#> [3361] "Mar 2008" "Mar 2008" "Mar 2008" "Mar 2008" "Mar 2008" "Mar 2008"
#> [3367] "Mar 2008" "Mar 2008" "Mar 2008" "Mar 2008" "Mar 2008" "Mar 2008"
#> [3373] "Mar 2008" "Mar 2008" "Mar 2008" "Mar 2008" "Mar 2008" "Mar 2008"
#> [3379] "Apr 2008" "Apr 2008" "Apr 2008" "Apr 2008" "Apr 2008" "Apr 2008"
#> [3385] "Apr 2008" "Apr 2008" "Apr 2008" "Apr 2008" "Apr 2008" "Apr 2008"
#> [3391] "Apr 2008" "Apr 2008" "Apr 2008" "Apr 2008" "Apr 2008" "Apr 2008"
#> [3397] "Apr 2008" "Apr 2008" "Apr 2008" "Apr 2008" "Apr 2008" "Apr 2008"
#> [3403] "Apr 2008" "Apr 2008" "Apr 2008" "Apr 2008" "Apr 2008" "Apr 2008"
#> [3409] "May 2008" "May 2008" "May 2008" "May 2008" "May 2008" "May 2008"
#> [3415] "May 2008" "May 2008" "May 2008" "May 2008" "May 2008" "May 2008"
#> [3421] "May 2008" "May 2008" "May 2008" "May 2008" "May 2008" "May 2008"
#> [3427] "May 2008" "May 2008" "May 2008" "May 2008" "May 2008" "May 2008"
#> [3433] "May 2008" "May 2008" "May 2008" "May 2008" "May 2008" "May 2008"
#> [3439] "May 2008" "Jun 2008" "Jun 2008" "Jun 2008" "Jun 2008" "Jun 2008"
#> [3445] "Jun 2008" "Jun 2008" "Jun 2008" "Jun 2008" "Jun 2008" "Jun 2008"
#> [3451] "Jun 2008" "Jun 2008" "Jun 2008" "Jun 2008" "Jun 2008" "Jun 2008"
#> [3457] "Jun 2008" "Jun 2008" "Jun 2008" "Jun 2008" "Jun 2008" "Jun 2008"
#> [3463] "Jun 2008" "Jun 2008" "Jun 2008" "Jun 2008" "Jun 2008" "Jun 2008"
#> [3469] "Jun 2008" "Jul 2008" "Jul 2008" "Jul 2008" "Jul 2008" "Jul 2008"
#> [3475] "Jul 2008" "Jul 2008" "Jul 2008" "Jul 2008" "Jul 2008" "Jul 2008"
#> [3481] "Jul 2008" "Jul 2008" "Jul 2008" "Jul 2008" "Jul 2008" "Jul 2008"
#> [3487] "Jul 2008" "Jul 2008" "Jul 2008" "Jul 2008" "Jul 2008" "Jul 2008"
#> [3493] "Jul 2008" "Jul 2008" "Jul 2008" "Jul 2008" "Jul 2008" "Jul 2008"
#> [3499] "Jul 2008" "Jul 2008" "Aug 2008" "Aug 2008" "Aug 2008" "Aug 2008"
#> [3505] "Aug 2008" "Aug 2008" "Aug 2008" "Aug 2008" "Aug 2008" "Aug 2008"
#> [3511] "Aug 2008" "Aug 2008" "Aug 2008" "Aug 2008" "Aug 2008" "Aug 2008"
#> [3517] "Aug 2008" "Aug 2008" "Aug 2008" "Aug 2008" "Aug 2008" "Aug 2008"
#> [3523] "Aug 2008" "Aug 2008" "Aug 2008" "Aug 2008" "Aug 2008" "Aug 2008"
#> [3529] "Aug 2008" "Aug 2008" "Aug 2008" "Sep 2008" "Sep 2008" "Sep 2008"
#> [3535] "Sep 2008" "Sep 2008" "Sep 2008" "Sep 2008" "Sep 2008" "Sep 2008"
#> [3541] "Sep 2008" "Sep 2008" "Sep 2008" "Sep 2008" "Sep 2008" "Sep 2008"
#> [3547] "Sep 2008" "Sep 2008" "Sep 2008" "Sep 2008" "Sep 2008" "Sep 2008"
#> [3553] "Sep 2008" "Sep 2008" "Sep 2008" "Sep 2008" "Sep 2008" "Sep 2008"
#> [3559] "Sep 2008" "Sep 2008" "Sep 2008" "Oct 2008" "Oct 2008" "Oct 2008"
#> [3565] "Oct 2008" "Oct 2008" "Oct 2008" "Oct 2008" "Oct 2008" "Oct 2008"
#> [3571] "Oct 2008" "Oct 2008" "Oct 2008" "Oct 2008" "Oct 2008" "Oct 2008"
#> [3577] "Oct 2008" "Oct 2008" "Oct 2008" "Oct 2008" "Oct 2008" "Oct 2008"
#> [3583] "Oct 2008" "Oct 2008" "Oct 2008" "Oct 2008" "Oct 2008" "Oct 2008"
#> [3589] "Oct 2008" "Oct 2008" "Oct 2008" "Oct 2008" "Nov 2008" "Nov 2008"
#> [3595] "Nov 2008" "Nov 2008" "Nov 2008" "Nov 2008" "Nov 2008" "Nov 2008"
#> [3601] "Nov 2008" "Nov 2008" "Nov 2008" "Nov 2008" "Nov 2008" "Nov 2008"
#> [3607] "Nov 2008" "Nov 2008" "Nov 2008" "Nov 2008" "Nov 2008" "Nov 2008"
#> [3613] "Nov 2008" "Nov 2008" "Nov 2008" "Nov 2008" "Nov 2008" "Nov 2008"
#> [3619] "Nov 2008" "Nov 2008" "Nov 2008" "Nov 2008" "Dec 2008" "Dec 2008"
#> [3625] "Dec 2008" "Dec 2008" "Dec 2008" "Dec 2008" "Dec 2008" "Dec 2008"
#> [3631] "Dec 2008" "Dec 2008" "Dec 2008" "Dec 2008" "Dec 2008" "Dec 2008"
#> [3637] "Dec 2008" "Dec 2008" "Dec 2008" "Dec 2008" "Dec 2008" "Dec 2008"
#> [3643] "Dec 2008" "Dec 2008" "Dec 2008" "Dec 2008" "Dec 2008" "Dec 2008"
#> [3649] "Dec 2008" "Dec 2008" "Dec 2008" "Dec 2008" "Dec 2008"
timeBasedSeq('20080101 0830',length=100) # 100 minutes
#> $from
#> [1] "2008-01-01 08:30:00 UTC"
#> 
#> $to
#> [1] NA
#> 
#> $by
#> [1] "mins"
#> 
#> $length.out
#> [1] 100
#> 
timeBasedSeq('20080101 083000',length=100) # 100 seconds
#> $from
#> [1] "2008-01-01 08:30:00 UTC"
#> 
#> $to
#> [1] NA
#> 
#> $by
#> [1] "secs"
#> 
#> $length.out
#> [1] 100
#>