Convert UNIX epoch to Date object

by

Go via POSIXct and you want to set a TZ there — here you see my (Chicago) default:

R> val <- 1352068320
R> as.POSIXct(val, origin="1970-01-01")
[1] "2012-11-04 22:32:00 CST"
R> as.Date(as.POSIXct(val, origin="1970-01-01"))
[1] "2012-11-05" 
R>

Edit: A few years later, we can now use the anytime package:

R> library(anytime)
R> anytime(1352068320)
[1] "2012-11-04 16:32:00 CST"
R> anydate(1352068320)
[1] "2012-11-04"
R>

Note how all this works without any format or origin arguments.

More Related Contents:

  1. R: How to handle times without dates?
  2. How to join (merge) data frames (inner, outer, left, right)
  3. Why are these numbers not equal?
  4. Dynamically select data frame columns using $ and a character value
  5. Error: could not find function … in R
  6. Simultaneously merge multiple data.frames in a list
  7. Count number of rows within each group
  8. Drop unused factor levels in a subsetted data frame
  9. Use dynamic name for new column/variable in `dplyr`
  10. Split data.frame based on levels of a factor into new data.frames
  11. Select rows from a data frame based on values in a vector
  12. Issue when passing variable with dollar sign notation ($) to aes() in combination with facet_grid() or facet_wrap()
  13. How can I remove all duplicates so that NONE are left in a data frame?
  14. strptime, as.POSIXct and as.Date return unexpected NA
  15. Controlling number of decimal digits in print output in R
  16. Why is it not advisable to use attach() in R, and what should I use instead?
  17. Round up from .5
  18. Create an empty data.frame
  19. What does “The following object is masked from ‘package:xxx'” mean?
  20. How do you specifically order ggplot2 x axis instead of alphabetical order? [duplicate]
  21. Measuring function execution time in R
  22. Use variable names in functions of dplyr
  23. How to subtract/add days from/to a date?
  24. How can I remove an element from a list?
  25. Remove backslashes from character string
  26. Difference between as.POSIXct/as.POSIXlt and strptime for converting character vectors to POSIXct/POSIXlt
  27. What does “S3 methods” mean in R?
  28. How to get help in R?
  29. Join R data.tables where key values are not exactly equal–combine rows with closest times
  30. Convert decimal day to HH:MM

Leave a Comment