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Convert integer to class Date

Tags:

date

r

r-faq

I have an integer which I want to convert to class Date. I assume I first need to convert it to a string, but how?

My attempt:

v <- 20081101 date <- as.Date(v, format("%Y%m%d")) 

Error in charToDate(x) : character string is not in a standard unambiguous format

Using paste() works, but is that really the correct way to do the conversion?

date <- as.Date(paste(v), format("%Y%m%d")) date [1] "2008-11-01"  class(date) # [1] "Date" 
like image 495
Elzo Valugi Avatar asked Nov 05 '10 08:11

Elzo Valugi


1 Answers

as.character() would be the general way rather than use paste() for its side effect

> v <- 20081101 > date <- as.Date(as.character(v), format = "%Y%m%d") > date [1] "2008-11-01" 

(I presume this is a simple example and something like this:

v <- "20081101"

isn't possible?)

like image 60
Gavin Simpson Avatar answered Sep 23 '22 00:09

Gavin Simpson