lubridate v0.2.4


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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
int_end Access and change the end date of an interval...
leap_year Is a year a leap year?
sundays Quickly create common epoch objects...
month Get/set months component of a date-time.
floor_date Round date-times down.
force_tz Replace time zone to create new date-time...
is.period Is x a period object?
DateCoercion Convert every date method we know about to POSIXlt and POSIXct...
lakers Lakers 2008-2009 basketball data set...
as.interval Change an object to an interval.
int_start Access and change the start date of an interval...
is.Date Is x a Date object?
is.POSIXt Is x a POSIXct or POSIXlt object?
is.difftime Is x a difftime object?
am Does date time occur in the am or pm?
ceiling_date Round date-times up.
make_difftime Makes a difftime object from a given number of seconds...
DateUpdate Changes the components of a date object...
lubridate Dates and times made easy with lubridate...
hour Get/set hours component of a date-time.
second Get/set seconds component of a date-time.
duration Description of time span classes in lubridate.
today The current date...
is.interval Is x an interval object?
decimal_date Converts a date to a decimal of its year.
add_dates Adding date-time objects...
with_tz Get date-time in a different time zone...
new_period Create a period object.
subtract_dates Subtracting date-time objects...
is.instant Is x a date-time object?
wday Get/set days component of a date-time.
now The current time...
reclass_date Convenience method to reclass dates post-modification.
hm Create a period with the specified number of hours and minutes...
new_interval Create an interval object.
round_date Rounding for date-times.
dst Get Daylight Savings Time indicator of a date-time.
as.period Change an object to a period.
seconds Quickly create relative timespans.
new_epoch Create an epoch object...
is.timespan Is x a length of time?
hms Create a period with the specified hours, minutes, and seconds...
origin 1970-01-01 GMT...
tz Get/set time zone component of a date-time.
parse_date Change dates into a POSIXct format...
dseconds Quickly create exact time spans.
ymd_hms Parse dates that have hours, minutes, or seconds elements...
minute Get/set minutes component of a date-time.
year Get/set years component of a date-time.
new_duration Create a duration object.
new_difftime Create a difftime object.
pretty.dates Computes attractive axis breaks for date-time data...
ms Create a period with the specified number of minutes and seconds...
ymd Parse dates according to the order that year, month, and day elements appear...
is.duration Is x a duration object?
as.duration Change an object to a duration (difftime).
add_epoch_to_date Add epochs to dates...
yday Get/set days component of a date-time.
week Get/set weeks component of a date-time.
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Type Package
License GPL
LazyData true
Collate 'accessors-day.r' 'accessors-hour.r' 'accessors-minute.r' 'accessors-misc.r' 'accessors-month.r' 'accessors-second.r' 'accessors-tz.r' 'accessors-week.r' 'accessors-year.r' 'coercion.r' 'durations.r' 'epochs.r' 'help.r' 'intervals.r' 'ops.durations.r' 'parse.r' 'periods.r' 'pretty.r' 'round.r' 'util.r' 'zzz.r'
Packaged 2011-04-05 13:17:45 UTC; hadley
Repository CRAN
Date/Publication 2011-04-05 13:28:28

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