Hi all, I am not exactly fluent in R and I got stuck with this. I would like to compare each elements of a vector A with any of the elements in Vector B. For some reasons it does not work.> StartDate = as.Date("01/10/2007", "%d/%m/%Y") > TimeSpan = seq(StartDate, by = 'days', length length(myAverageCWVs$X1986))> TickLabels = c("2007-10-01", "2007-11-01", "2007-12-01", "2008-01-01")> TimeSpan[1:40] == TickLabelsHere I would expect TRUE for teh first entry and then TRUE for the entry related to "2007-11-01". This doesn't seem to be the case. [1] TRUE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE [13] FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE [25] FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE [37] FALSE FALSE FALSE FALSE Thanks you in advance for any help. [[alternative HTML version deleted]]
Hi,
You might consider ?match For example:
StartDate = as.Date("01/10/2007", "%d/%m/%Y")
TimeSpan = seq(StartDate, by = 'days', length = 40)
TickLabels = as.Date(c("2007-10-01", "2007-11-01",
"2007-12-01",
"2008-01-01"), "%Y-%m-%d")
TimeSpan[1:40] == TickLabels # not designed for comparing multiple
values on each side
TickLabels %in% TimeSpan[1:40] # Find which TickLabels are in TimeSpane
TimeSpan[1:40] %in% TickLabels # Find which TimeSpane are in TickLabels
HTH,
Josh
On Mon, Oct 18, 2010 at 5:50 AM, Paolo Agnolucci
<agnolucponr at googlemail.com> wrote:> Hi all,
>
> I am not exactly fluent in R and I got stuck with this. I would like to
> compare each elements of a vector A with any of the elements in Vector B.
> For some reasons it does not work.
>
>> StartDate = as.Date("01/10/2007", "%d/%m/%Y")
>> TimeSpan = seq(StartDate, by = 'days', length >
length(myAverageCWVs$X1986))
>
>> TickLabels = c("2007-10-01", ?"2007-11-01",
?"2007-12-01", ?"2008-01-01")
>
>> TimeSpan[1:40] == TickLabels
> Here I would expect TRUE for teh first entry and then TRUE for the entry
> related to "2007-11-01". This doesn't seem to be the case.
>
> ?[1] ?TRUE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE
FALSE
> [13] FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE
FALSE
> [25] FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE
FALSE
> [37] FALSE FALSE FALSE FALSE
>
>
> Thanks you in advance for any help.
>
> ? ? ? ?[[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
--
Joshua Wiley
Ph.D. Student, Health Psychology
University of California, Los Angeles
http://www.joshuawiley.com/
Use %in% instead of '==' On Mon, Oct 18, 2010 at 10:50 AM, Paolo Agnolucci < agnolucponr@googlemail.com> wrote:> Hi all, > > I am not exactly fluent in R and I got stuck with this. I would like to > compare each elements of a vector A with any of the elements in Vector B. > For some reasons it does not work. > > > StartDate = as.Date("01/10/2007", "%d/%m/%Y") > > TimeSpan = seq(StartDate, by = 'days', length > length(myAverageCWVs$X1986)) > > > TickLabels = c("2007-10-01", "2007-11-01", "2007-12-01", "2008-01-01") > > > TimeSpan[1:40] == TickLabels > Here I would expect TRUE for teh first entry and then TRUE for the entry > related to "2007-11-01". This doesn't seem to be the case. > > [1] TRUE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE > FALSE > [13] FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE > FALSE > [25] FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE > FALSE > [37] FALSE FALSE FALSE FALSE > > > Thanks you in advance for any help. > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. >-- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O [[alternative HTML version deleted]]