[R-sig-Geo] merging polygons by indices

[majesty]

still I am not quiet sure how to achieve this by manipulation of ID. Could
you give an example, say I have 5 polygons in my shapefile shape.shp but
would like to have 4 polygons, where shape[2] is merged with shape[3]. I am
somewhat clueless because ID has to be of equal in length to polygons slot
(in my case 5)

Thanks, 

Juta Kawalerowicz


MPhil Candidate in Sociology
Oxford University


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