I need to compare two versions of the same road network file to determine which records have had a change in their object geometry between the two versions. Is there a query that can do this quickly? I do not need to know what the change was, just that there was a change. Both tables have a corresponding unique ID.
James Harvie
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You could also chose to update a text column with some spatial characteristics of the spatial object.
That could be the length, the centroid X and Y values, the number of nodes and maybe the coordinates of the start and end nodes.
Divide these values with a spatial character like “|” or “#”.
If these values are identical, there is a good chance the objects are identical too.
If you want to be completely sure, you will have to inspect the individual nodes.
From: mapi...@googlegroups.com <mapi...@googlegroups.com>
On Behalf Of Uffe Kousgaard
Sent: 3. marts 2021 08:18
To: mapi...@googlegroups.com
Subject: Re: [MI-L] Detect changes to object geometry
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To view this discussion on the web visit https://groups.google.com/d/msgid/mapinfo-l/c1aca906-0379-3c6c-ea86-053195264b65%40routeware.dk.