Spss 12 release date10/31/2023 ![]() ![]() Thus, for date only data, as.Date will usually be the best choice. The general rule for date/time data in R is to use the simplest technique possible. ![]() The builtin as.Date function handles dates (without times) the contributed library chron handles dates and times, but does not control for time zones and the POSIXct and POSIXlt classes allow for dates and times with control for time zones. R provides several options for dealing with date and date/time data. Originally for Statistics 133, by Phil Spector
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