I need to reshape an ESRI shape file: http://arnulf.us/PLZ and resp
This means that I need to combine the areas of the ZipCodes (i. e. PLZ) to
the ZipCode regions (i. e. PLZ Leitregion).
The city "Duesseldorf" has a couple of ZipCodes for different parts of the
city, e. g. 40210 40211 40212 40213 40215 40217 and so on. The ZipCode
region (PLZ Leitregion) is "40".
What I need to do is to combine the area information in the above given
ESRI shapefile to get the area for the ZipCode region.
I found an instruction for T-SQL Server:
How can I do this using R?
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