Dear all R users,
Suppose I have a data frame data like this:
5/2/2006 36560
5/3/2006 36538
5/4/2006 36452
5/5/2006 36510
5/8/2006 36485
5/9/2006 36502
5/10/2006 36584
5/11/200636571
Now I want to create a for loop like this:
date =
test
V1V2
1 5/2/2006 36560
2 5/3/2006 36538
3 5/4/2006 36452
4 5/5/2006 36510
5 5/8/2006 36485
6 5/9/2006 36502
7 5/10/2006 36584
8 5/11/2006 36571
dates - strptime(test$V1, %d/%m/%Y)
---
Jacques VESLOT
CNRS
Try this:
Lines - 5/2/2006 36560
5/3/2006 36538
5/4/2006 36452
5/5/2006 36510
5/8/2006 36485
5/9/2006 36502
5/10/2006 36584
5/11/200636571
DF - read.table(textConnection(Lines), as.is = TRUE)
fmt - %m/%d/%Y
DF[,1] - as.Date(DF[,1], fmt)
date -
Hi,
I've been playing with:
joinDate - format(strptime(as.vector(forum[,2]), %d-%b-%y),
+%d-%b-%Y)
today - format(strptime(as.vector(14-Jun-04), %d-%b-%Y),
+ %d-%b-%Y)
joinDate
[1] 04-Feb-2004 13-Feb-2004 26-Feb-2004 27-Feb-2004
27-Feb-2004
[6] 27-Feb-2004
KKWa == Ko-Kang Kevin Wang [EMAIL PROTECTED]
on Thu, 17 Jun 2004 19:57:39 +1200 writes:
KKWa Hi,
KKWa I've been playing with:
joinDate - format(strptime(as.vector(forum[,2]), %d-%b-%y),
KKWa +%d-%b-%Y)
today - format(strptime(as.vector(14-Jun-04),
You have formatted the dates, so you are trying to subtract character
strings.
Convert to Date instead (although you can subtract POSIXlt dates).
On Thu, 17 Jun 2004, Ko-Kang Kevin Wang wrote:
Hi,
I've been playing with:
joinDate - format(strptime(as.vector(forum[,2]), %d-%b-%y),
+
Hi,
-Original Message-
From: Martin Maechler [mailto:[EMAIL PROTECTED]
Kevin,
[[did you have tough day? usually your Q/A are much
better ;-()]]
Thanks to those who have replied, and yes shame on me..
[I also realised I can just use Sys.Date() to get today's date,
instead
