Dear Andrew,
Try this:
data.frame(z=c(a$a,b$c))
HTH,
Jorge
On Tue, Mar 17, 2009 at 5:55 PM, Andrew McFadden <
andrew.mcfad...@maf.govt.nz> wrote:
> I all
>
> I am trying to combine columns from two dataframes to make a completely
> new dataframe consisting of one column of dates (ie a combination of
> dates from the two dataframes).
>
> >From the following dataframes
>
> a b
> 1 2008-07-27 1
> 2 2008-10-01 2
> 3 2008-08-15 3
> 4 2008-08-14 4
> 5 2008-08-14 5
> 6 2008-09-20 6
>
> c d
> 1 2008-07-27 1
> 2 2008-10-01 2
>
> I would like to get:
>
> z
> 2008-07-27
> 2008-10-01
> 2008-08-15
> 2008-08-14
> 2008-08-14
> 2008-09-20
> 2008-07-27
> 2008-10-01
>
> a<-
> data.frame(as.Date(c("2008-07-27","2008-10-01","2008-08-15","2008-08-14"
> ,
> "2008-08-14","2008-09-20"), format = "%Y-%m-%d"),c(1:6))
> names(a)=c("a","b")
> a
> b<- data.frame(as.Date(c("2008-07-27","2008-10-01"), format =
> "%Y-%m-%d"),c(1:2))
> names(b)=c("c","d")
> a;b
>
> I have tried:
>
> append(a,b)
> combine(a,b)
> rbind(a,b)
>
> I would appreciate your help.
>
> Kind regards
>
> andy
>
> Andrew McFadden MVS BVSc
> Incursion Investigator
> Investigation & Diagnostic Centres - Wallaceville Biosecurity New
> Zealand Ministry of Agriculture and Forestry
>
> Phone 04 894 5600 Fax 04 894 4973 Mobile 029 894 5611 Postal address:
> Investigation and Diagnostic Centre- Wallaceville Box 40742 Ward St
> Upper Hutt
>
>
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