Sorry, but i don't get the problem at all.
Could you provide a bit of y by using dput()?
Can you provide an example of how you want the data to look like after the
transformation?
On 16.01.2013, at 16:42, Andrea Goijman wrote:
> Dear list,
>
> I'm working with a large data set, where I grouped several species in one
> group (guild). Then I reshaped my data as shown below. Now, I just want to
> have "Rep" only as 1 or 0.
>
> I'm not being able to change the values of rep>=1 to 1... tried many things
> and I'm not being successful!
>
>
>> melting=melt(occ.data,id.var=c("guild", "Site", "Rep", "Año"),
> measure.var="Pres")
>> y=cast(melting, Site ~ Rep ~ guild ~ Año)
> Aggregation requires fun.aggregate: length used as default
>
>> y[1:10,,"gui4a",1:2]
> , , Año = 2003
>
> Rep
> Site 1 2 3 4 5
> 1021 0 0 0 0 0
> 1022 0 0 0 0 0
> 1023 0 0 0 0 0
> 1024 0 0 0 0 0
> 1025 0 0 0 0 0
> 1026 0 0 0 0 0
> * 1051 3 1 2 3 5*
> * 1052 4 3 5 2 3*
> * 1053 4 3 3 3 2*
> * 1054 1 2 1 3 0*
>
> , , Año = 2004
>
> Rep
> Site 1 2 3 4 5
> 1021 2 5 5 5 4
> 1022 6 3 2 2 2
> 1023 4 1 1 2 2
> 1024 0 1 2 2 0
> 1025 0 1 0 1 0
> 1026 2 1 0 0 1
> 1051 2 1 3 1 2
> 1052 2 4 1 1 2
> 1053 2 4 2 2 1
> 1054 4 3 3 2 3
>
> [[alternative HTML version deleted]]
>
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