[R] order() not producing results as I expect

[Duncan Murdoch]

On 10/10/2013 12:00 PM, Karl Fetter wrote:
> Hello,
>
> I'm using R version 3.0.0 on a mac. I'm having trouble getting order to
> behave as I expect it should. I'm trying to sort a data.frame according to
> a character vector. I'm able to sort the data.frame, but it retruns an
> unexpected result. I have no idea where the order that is being produced
> comes from.

It comes from gen.names, which is not a column of your dataset.  I think 
you'll have to give us something reproducible before we can help you.

Duncan Murdoch

>
> Any ideas on how to properly order a data frame by a character vector?
>
> Here is the current order of the data frame (called str.dat):
>
> > head(str.dat)
>     str.names POPINFO POPFLAG LOCDATA Loc1 Loc2 Loc3 ind.names
> 1 alba1.pop3       3       0       1   12    3    2     alba1
> 2 alba2.pop3       3       0       1    3    3    2     alba2
> 3 alch1.pop4       4       0       2    2    3    2     alch1
> 4 alch2.pop4       4       0       2    2    3    2     alch2
> 5 alco1.pop4       4       0       3    3    3    2     alco1
> 6 alco2.pop4       4       0       3    3    3    2     alco2
>
>
>
> Here's the order I expect it to be in when I use order:
>
> > head(data.frame(gen.names))
>    gen.names
> 1     magv1
> 2     magv2
> 3     magv3
> 4     magv4
> 5       lc1
> 6       lc2
>
>
> Here's the order I'm getting:
>
> > head(str.dat[order(gen.names),])
>       str.names POPINFO POPFLAG LOCDATA Loc1 Loc2 Loc3 ind.names
> 111 ncle2.pop5       5       0      39    3    3    2     ncle2
> 112 ncle3.pop5       5       0      39    2    2    2     ncle3
> 146 wvma1.pop8       8       0      57    3    3    2     wvma1
> 145 wvfa2.pop8       8       0      56    3    3    2     wvfa2
> 55  flse6.pop2       2       0      19    2    5    4     flse6
> 54  flse5.pop2       2       0      19    2    5    4     flse5
>
>
>
>
> Many thanks,
>
> Karl
>
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