lubridate v1.3.0
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Make dealing with dates a little easier
Lubridate makes it easier to work with dates and times by
providing functions to identify and parse date-time data,
extract and modify components of a date-time (years, months,
days, hours, minutes, and seconds), perform accurate math on
date-times, handle time zones and Daylight Savings Time.
Lubridate has a consistent, memorable syntax, that makes
working with dates fun instead of frustrating.
Functions in lubridate
| Name | Description | |
| as.duration | Change an object to a duration. | |
| guess_formats | Guess formats from the supplied date-time character vector. | |
| int_aligns | Test if two intervals share an endpoint | |
| is.instant | Is x a date-time object? | |
| days_in_month | Get the number of days in the month of a date-time. | |
| fit_to_timeline | Fit a POSIXlt date-time to the timeline | |
| dseconds | Quickly create exact time spans. | |
| int_end | Access and change the end date of an interval | |
| int_diff | Extract the intervals within a vector of date-times | |
| int_length | Get the length of an interval in seconds | |
| is.POSIXt | Is x a POSIXct or POSIXlt object? | |
| is.Date | Is x a Date object? | |
| floor_date | Round date-times down. | |
| reclass_timespan | Convenience method to reclass timespans post-modification. | |
| quarter | Get the fiscal quarter of a date-time. | |
| DateCoercion | Convert a variety of date-time classes to POSIXlt and POSIXct | |
| duration | Create a duration object. | |
| int_standardize | Ensures all intervals in an interval object are positive | |
| Interval-class | Interval class | |
| Duration-class | Duration class | |
| seconds_to_period | Contrive a period from a given number of seconds | |
| is.difftime | Is x a difftime object? | |
| is.duration | Is x a duration object? | |
| hm | Create a period with the specified number of hours and minutes | |
| as.period | Change an object to a period. | |
| DateUpdate | Changes the components of a date object | |
| origin | 1970-01-01 UTC | |
| format_offset | format_offset | |
| year | Get/set years component of a date-time. | |
| add_epoch_to_date | Add epochs to dates | |
| second | Get/set seconds component of a date-time. | |
| ymd | Parse dates according to the order in that year, month, and day elements appear in the input vector. | |
| ceiling_date | Round date-times up. | |
| int_start | Access and change the start date of an interval | |
| Timespan-class | Timespan class | |
| is.timespan | Is x a length of time? | |
| as.interval | Change an object to an interval. | |
| dst | Get Daylight Savings Time indicator of a date-time. | |
| stamp | Format dates and times based on human-friendly templates. | |
| with_tz | Get date-time in a different time zone | |
| period | Create a period object. | |
| is.interval | Is x an Interval object? | |
| ymd_hms | Parse dates that have hours, minutes, or seconds elements. | |
| force_tz | Replace time zone to create new date-time | |
| wday | Get/set days component of a date-time. | |
| seconds | Quickly create relative timespans. | |
| lubridate | Dates and times made easy with lubridate | |
| make_difftime | Makes a difftime object from a given number of seconds | |
| parse_date_time | Parse character and numeric date-time vectors with user friendly order formats. | |
| date_decimal | Converts a decimal to a date. | |
| int_overlaps | Test if two intervals overlap | |
| today | The current date | |
| here | The current time in your local timezone | |
| pretty_dates | Computes attractive axis breaks for date-time data | |
| olson_time_zones | Names of available time zones | |
| hour | Get/set hours component of a date-time. | |
| new_period | Create a period object. | |
| yday | Get/set days component of a date-time. | |
| Period-class | Period class | |
| int_flip | Flip the direction of an interval | |
| hms | Create a period with the specified hours, minutes, and seconds | |
| period_to_seconds | Convert a period to the number of seconds it appears to represent | |
| month | Get/set months component of a date-time. | |
| round_date | Rounding for date-times. | |
| is.period | Is x a period object? | |
| ms | Create a period with the specified number of minutes and seconds | |
| %m+% | Add and subtract months to a date without exceeding the last day of the new month | |
| int_shift | Shift an interval along the timeline | |
| lubridate_formats | Lubridate format orders used in stamp | |
| leap_year | Is a year a leap year? | |
| new_duration | Create a duration object. | |
| new_difftime | Create a difftime object. | |
| sundays | Quickly create common epoch objects | |
| tz | Get/set time zone component of a date-time. | |
| now | The current time | |
| reclass_date | Convenience method to reclass dates post-modification. | |
| timespan | Description of time span classes in lubridate. | |
| %within% | Tests whether a date or interval falls within an interval | |
| week | Get/set weeks component of a date-time. | |
| new_epoch | Create an epoch object | |
| minute | Get/set minutes component of a date-time. | |
| new_interval | Create an interval object. | |
| am | Does date time occur in the am or pm? | |
| decimal_date | Converts a date to a decimal of its year. | |
| lakers | Lakers 2008-2009 basketball data set | |
| rollback | Roll back date to last day of previous month | |
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Details
| License | GPL |
| LazyData | true |
| Type | Package |
| BugReports | https://github.com/hadley/lubridate/issues |
| VignetteBuilder | knitr |
| Collate | 'time-zones.r' 'POSIXt.r' 'timespans.r' 'numeric.r' 'util.r' 'durations.r' 'periods.r' 'intervals.r' 'difftimes.r' 'Dates.r' 'coercion.r' 'ops-addition.r' 'ops-division.r' 'ops-integer-division.r' 'ops-modulo.r' 'ops-multiplication.r' 'ops-subtraction.r' 'accessors-day.r' 'accessors-dst.r' 'accessors-hour.r' 'accessors-minute.r' 'accessors-month.r' 'accessors-second.r' 'accessors-tz.r' 'accessors-week.r' 'accessors-year.r' 'am-pm.r' 'decimal-dates.r' 'epochs.r' 'help.r' 'instants.r' 'leap-years.r' 'parse.r' 'pretty.r' 'round.r' 'update.r' 'data.r' 'guess.r' 'stamp.r' 'ops-%m+%.r' 'accessors-quarter.r' |
| Packaged | 2013-09-20 07:23:17 UTC; ripley |
| NeedsCompilation | no |
| Repository | CRAN |
| Date/Publication | 2013-09-20 09:23:33 |
| depends | base (>= 2.14) , methods , R (>= 2.14) |
| enhances | chron , fts , its , timeDate , timeSeries , tis , tseries , xts , zoo |
| suggests | knitr , testthat |
| imports | memoise , plyr , stringr |
| Contributors | Garrett Grolemund, Hadley Wickham, Winston Chang, Imanuel Constigan, Chel Hee Lee, Vitalie Spinu, Richard Cotton |
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