lubridate v0.2.1

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by Hadley Wickham

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

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' 'intervals.r' 'ops.durations.r' 'parse.r' 'periods.r' 'pretty.r' 'round.r' 'util.r' 'help.r' 'zzz.r'
Packaged 2010-10-29 18:31:35 UTC; garrettgrolemund
Repository CRAN
Date/Publication 2010-11-03 07:41:37

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