[R-sig-Geo] adding variable to shapefile

[Tom Gottfried]

you can even operate directly on the object you obtained from reading the shapefile. To add a column 
called test just do

s$test <- test

assuming that test has length(test)==nrow(s). In case you want it back in the shapefile use 
writePolyShape.

Tom

Am 21.03.2011 19:56, schrieb Johannes Signer:
> You can access the data slot of a shapefile s by:
>
> d<- s at data
>
> d is data frame, where you can a column and write it back to the shapefile.
>
> s at data<- d
>
> Hope this helps
> Johannes
>
> On Mon, Mar 21, 2011 at 7:29 PM, Advait Godbole<advaitgodbole at gmail.com>wrote:
>
>> Dear R-users,
>>
>> I am reading a shapefile in to R using readShapePoly, do some spatial
>> modeling on it and obtain a new variable which I want to write to the same
>> polygons as a new attribute (variable) preserving the spatial structure. Is
>> there a straightforward way of doing it via a "write-to-shapefile"
>> function?
>>
>> Thanks in advance,
>>
>> --
>> advait godbole
>>
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>>
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