r-help-boun...@r-project.org] On
> Behalf Of ikuzar
> Sent: Monday, March 05, 2012 6:42 AM
> To: r-help@r-project.org
> Subject: Re: [R] strange behaviour of "POSIXlt" "POSIXt" object
>
> Hi,
> I'd like to know what "L" means in "1L&quo
It means to interpret the literal as an integer rather than a double.
Michael
On Mar 5, 2012, at 9:41 AM, ikuzar wrote:
> Hi,
> I'd like to know what "L" means in "1L" in the instruction below:
> for(i in 1:20){ z$mday <- z$mday + 1L ; cat(is.na(z), ": ");print(z)}
>
> The result :
> FALSE
Hi,
I'd like to know what "L" means in "1L" in the instruction below:
for(i in 1:20){ z$mday <- z$mday + 1L ; cat(is.na(z), ": ");print(z)}
The result :
FALSE : [1] "2009-02-26 06:30:00"
FALSE : [1] "2009-02-27 06:30:00"
FALSE : [1] "2009-02-28 06:30:00"
FALSE : [1] "2009-03-01 06:30:00"
FALSE :
Hadley's lubridate package might be of some help to you.
Michael
On Mon, Feb 27, 2012 at 11:40 AM, ikuzar wrote:
> So, how is the correct way to increment the day ?
>
> --
> View this message in context:
> http://r.789695.n4.nabble.com/strange-behaviour-of-POSIXlt-POSIXt-object-tp4418115p442520
So, how is the correct way to increment the day ?
--
View this message in context:
http://r.789695.n4.nabble.com/strange-behaviour-of-POSIXlt-POSIXt-object-tp4418115p4425206.html
Sent from the R help mailing list archive at Nabble.com.
__
R-help@r-proj
0"
TRUE : [1] "2009-03-16 06:30:00"
TRUE : [1] "2009-03-17 06:30:00"
The print routine does not seem to consult is.na().
Bill Dunlap
Spotfire, TIBCO Software
wdunlap tibco.com
> -Original Message-----
> From: r-help-boun...@r-project.org [mailto:r-help-boun.
Hi,
I do not know what part of my code should I post here (I use large size of
data, the loop "for" contains many lines). The situation is difficult to
post here, but I hope these lines would be useful for help:
hcEndDateTmp = userDateStart
if((hcStartTime<="23:59") & (hcEndTime >= "00:00")){
What version of R are you using. Here is the results with 2.14.1 under
Windows:
> x <- as.POSIXlt("2009-03-29 06:30:00")
>
> x
[1] "2009-03-29 06:30:00"
> class(x)
[1] "POSIXlt" "POSIXt"
> is.na(x)
[1] FALSE
>
On Fri, Feb 24, 2012 at 12:57 PM, ikuzar wrote:
> Hi,
> Does anybody know why get I
> Does anybody know why get I this kind of strange situation:
>
> Browse[2]> hcEnd
> [1] "2009-03-29 06:30:00"
> Browse[2]> class(hcEnd)
> [1] "POSIXlt" "POSIXt"
> Browse[2]> is.na(hcEnd)
> [1] TRUE
pp<-as.POSIXlt("2009-03-29 06:30:00")
pp
[1] "2009-03-29 06:30:00"
class(pp)
[1] "POSIXlt" "POSIX
Can you dput(hcEnd) and give a snippet of the code that generates it?
Michael
On Feb 24, 2012, at 12:57 PM, ikuzar wrote:
> Hi,
> Does anybody know why get I this kind of strange situation:
>
> Browse[2]> hcEnd
> [1] "2009-03-29 06:30:00"
> Browse[2]> class(hcEnd)
> [1] "POSIXlt" "POSIXt"
>
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