Hi! I'm trying to aggregate neighboring polygons based on additional conditions. These are:
- the polygons must be adjacent - the polygons must be of the same type (simple value from attribute) - the polygons should only be combined if the values of an attribute x are below a certain value AND - the polygons shall be merged with other polygons until this value is reached The polygons are grids. Aggregation should not necessarily lead to new squares (as in the Quadtree-method). I use PostGIS to store the data and QGIS for visualization and further processing. For performance reasons I suspect that a database-supported procession makes sense, but if QGIS (GDAL,GRASS etc.) offers a function, I would like to try it out. I would be happy about support Best regards Sven ---------------------------- empirica ag Sven Böhme Kaiserstraße 29 53113 Bonn Fon +49 (0)228 91489-90 Fax +49 (0)3222 95 66 169 www.empirica-institut.de<http://www.empirica-institut.de/> empirica ag - Zweigniederlassung Bonn - HRB 87951 Amtsgericht Charlottenburg Vorstand: Dr. Marie-Therese Krings-Heckemeier (Vorsitzende), Ludger Baba, Dr. Reiner Braun (stellv. Vors.), Meike Heckenroth, Prof. Dr. Harald Simons Aufsichtsratsvorsitzender: Klaus Arndt Kostenloser Newsletter von empirica. Jetzt anmelden: https://www.empirica-institut.de/newsletter-anmelden/ Diese E-Mail enthält vertrauliche und/oder rechtlich geschützte Informationen. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrtümlich erhalten haben, informieren Sie bitte sofort den Absender und vernichten Sie diese Mail. Das unerlaubte Kopieren sowie die unbefugte Weitergabe dieser Mail ist nicht gestattet. - This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.
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