> today <- as.Date("2015-03-04") # default format
Better is:
today <- Sys.Date()
S
-Original Message-
From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of William Dunlap
Sent: Thursday, 5 March 2015 7:47a
To: Brian Hamel
Cc: r-help@r-project.org
Subject:
Department of Anthropology
> Texas A&M University
> College Station, TX 77840-4352
>
>
> -Original Message-
> From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Brian
> Hamel
> Sent: Wednesday, March 4, 2015 8:55 AM
> To: r-help@r-project.org
> Sub
University
College Station, TX 77840-4352
-Original Message-
From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Brian Hamel
Sent: Wednesday, March 4, 2015 8:55 AM
To: r-help@r-project.org
Subject: [R] Using dates in R
Hi all,
I have a dataset that includes a "date"
;%m/%d/%y')
[1] TRUE
HTH ...
P
-Original Message-
From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Brian Hamel
Sent: Thursday, 5 March 2015 3:55 a.m.
To: r-help@r-project.org
Subject: [R] Using dates in R
Hi all,
I have a dataset that includes a "date" varia
You will need to convert strings like "2/15/15" into one of the time/date
classes available in R and then it is easy to do comparisons. E.g., if you
have no interest in the time of day you can use the Date class:
> d <- as.Date(c("12/2/79", "4/15/15"), format="%m/%d/%y")
> today <- as.Date("2015-
Your hunch is wrong.
Start by typing
?Date
at the R prompt. Continue with
?as.Date
Then to find out if the date is earlier than today
delta <- thedate - Sys.Date()
(of course, that will change if you use it tomorrow)
Getting your indicator variable can be done very easily with base R; no
Hi all,
I have a dataset that includes a "date" variable. Each observation includes
a date in the form of 2/15/15, for example. I'm looking to create a new
indicator variable that is based on the date variable. So, for example, if
the date is earlier than today, I would need a "0" in the new colum
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