[R-sig-Geo] rbind problems with SpatialPolygonsDataFrame

[Jonathan Greenberg]

I tried that, but is there an equivalent of makeUniqueIDs=TRUE for
that command?  I get this error when running spRbind:

Error in spRbind(as(obj, "SpatialPolygons"), as(x, "SpatialPolygons")) :
  non-unique polygon IDs

--j

On Tue, Sep 13, 2011 at 5:17 PM, Adam Sparks <adamhsparks at gmail.com> wrote:
> Have you tried spRbind?
>
> On Wed, Sep 14, 2011 at 4:42 AM, Jonathan Greenberg
> <greenberg at ucdavis.edu>wrote:
>
>> R-sig-geo'ers:
>>
>> I apologize that I can't provide the input data, but maybe the info
>> below can illuminate the problem.  Basically, I'm trying to rbind two
>> SpatialPolygonDataFrames together, but I'm getting a strange error:
>>
>> 'no method or default for coercing "logical" to "SpatialPolygons"'
>>
>> Does rbind only work on SpatialPolygons (e.g. should I rbind the
>> SpatialPolygons and the data.frame separately, then piece them back
>> together afterwards?)
>>
>> Note the "replacement" call was because I couldn't figure out how to
>> do.call(rbind) and pass along the "makeUniqueIDs=TRUE"
>>
>> > i=2
>> >
>> boundary_vectors=rbind(boundary_vectors,boundary_vectors_unmerged[[i]],makeUniqueIDs=TRUE)
>> Error in as(x, "SpatialPolygons") :
>>  no method or default for coercing "logical" to "SpatialPolygons"
>> > class(boundary_vectors)
>> [1] "SpatialPolygonsDataFrame"
>> attr(,"package")
>> [1] "sp"
>> > class(boundary_vectors_unmerged[[i]])
>> [1] "SpatialPolygonsDataFrame"
>> attr(,"package")
>> [1] "sp"
>>
>> This was a single step from a larger looping I used in lieu of do.call:
>>
>> > class(boundary_vectors_unmerged)
>>        for(i in (1:length(boundary_vectors_unmerged)))
>>        {
>>                print(i)
>>                if(i==1)
>>                {
>>                        boundary_vectors=boundary_vectors_unmerged[[i]]
>>                } else
>>                {
>>
>>  boundary_vectors=rbind(boundary_vectors,boundary_vectors_unmerged[[i]],makeUniqueIDs=TRUE)
>>                }
>>        }
>>
>>
>> --j
>>
>> --
>> Jonathan A. Greenberg, PhD
>> Assistant Project Scientist
>> Center for Spatial Technologies and Remote Sensing (CSTARS)
>> Department of Land, Air and Water Resources
>> University of California, Davis
>> One Shields Avenue
>> Davis, CA 95616
>> Phone: 415-763-5476
>> AIM: jgrn307, MSN: jgrn307 at hotmail.com, Gchat: jgrn307
>>
>> _______________________________________________
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>> R-sig-Geo at r-project.org
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>>
>
>
>
> --
> best,
>
> Adam Sparks
> Post-Doctoral Fellow
> IRRI
> DAPO Box 7777
> Metro, Manila
> Los Baños, Laguna, Philippines
>
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>
>
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>



-- 
Jonathan A. Greenberg, PhD
Assistant Project Scientist
Center for Spatial Technologies and Remote Sensing (CSTARS)
Department of Land, Air and Water Resources
University of California, Davis
One Shields Avenue
Davis, CA 95616
Phone: 415-763-5476
AIM: jgrn307, MSN: jgrn307 at hotmail.com, Gchat: jgrn307