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commit 9f4cd9cf9d05a2431df1ede330dfc57689628253 1 parent 2f7cb31
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15 README.md
@@ -1,17 +1,18 @@
-#lubridate
+# lubridate
-Date-time data can be frustrating to work with in R. R commands for date-times are generally unintuitive and change depending on the type of date-time object being used. Moreover, the methods we use with date-times must be robust to time zones, leap days, daylight savings times, and other time related quirks. In some situations, R does not yet have the machinery needed to make robust time calculations. Lubridate makes it easier to do the things R does with date-times and possible to do the things R does not. Specifically, lubridate provides:
+Date-time data can be frustrating to work with in R. R commands for date-times are generally unintuitive and change depending on the type of date-time object being used. Moreover, the methods we use with date-times must be robust to time zones, leap days, daylight savings times, and other time related quirks, and R lacks these capabilities in some situations. Lubridate makes it easier to do the things R does with date-times and possible to do the things R does not. Specifically, lubridate provides:
* a set of intuitive date-time related functions that work the same way for
- all common date-time classes
+ all common date-time classes (including those from `chron`, `timeDate`,
+ `zoo`, `xts`, `its`, `tis`, `timeSeries`, `fts`, and `tseries`)
-* quick and easy parsing of date-times: ymd(), dmy(), mdy()...
+* quick and easy parsing of date-times: `ymd()`, `dmy()`, `mdy()`, ...
* simple functions to extract and modify components of a date-time, such as
- years, months, days, hours, minutes, and seconds: second(), minute(),
- hour()...
+ years, months, days, hours, minutes, and seconds: `year()`, `month()`,
+ `day()`, ...
-* helper functions for handling time zones: with_tz(), force_tz()
+* helper functions for handling time zones: `with_tz()`, `force_tz()`
Lubridate also expands the type of mathematical operations that can be performed with date-time objects. It introduces three new time span classes borrowed from http://joda.org.
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