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| GeoCommunity Mailing List |
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| Subject: | Re: [gislist] how to get neighbours list from a shapefile |
| Date: |
07/22/2005 04:05:01 AM |
| From: |
lars lingner |
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Morning list,
thank you very much for your respond. The hint from Bill Huber was very
good. I can use this as base for my further studies. In long term I will
need an solution which can be automated, but I`m happy for now. And as I
know the basics and the algorithm it should not be so difficult to write
an script or something similar.
Thanks again and have a nice day
lars
Quantitative Decisions schrieb:
> At 11:40 AM 7/21/2005 +0200, lars lingner wrote:
>
>>I`m looking for an solution to get an list of all neighbours from an
>>feature in my shapefile. It should differentiate between included and
>>surrounding neighbours. At top of this it would be really nice to get
>>the length of the border between the current feature and the neighbours.
>>
>>The output should be an table, which I need for further processing.
>>
>>I thought this is an basic task for an GIS (even if its not an trivial
>>one), but I couldn't find anything. Is there an solution out there?
>>Maybe as an extension for ESRI ArcView/GIS or GRASS or any other GIS?
>
>
> This was recently discussed on the ArcView 3.x ESRI user forum, with an
> extension available at
> http://forums.esri.com/Thread.asp?c=3&f=38&t=163318&mc=3#479013 . Also
> attached to that posting is a brief downloadable report providing an
> efficient, general approach for solving this kind of problem (in any vector
> GIS) even when there are topological inconsistencies and digitizing
> errors. This may be of interest to all GISList readers, not just users of
> AV 3.x.
>
> The extension produces a table of the neighbor relation and it reports the
> length of the shared borders. It does not distinguish between included and
> surrounding neighbors: that's really a separate analysis, which of course
> will be facilitated by having a table of the neighbors.
>
> As always, the ArcView-centric mailing lists and Web pages are the best
> places to start with inquiries like this.
>
> --Bill Huber
> Quantitative Decisions
>
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