While many analyses require smart and flexible aggregation of adjacent and complex polygons storing quantitative data, this need is not met by tools currently available.
In this work we present a new approach and tool that handle minimum mapping unit, resolution mismatch between layers or spatial uncertainty problems in GISc. This tool automatically dissolves polygons below a threshold area, updating fields’ values. The toolbox allows to select polygon areal-analysis ordering (i.e. from the smallest to the biggest, vice versa or order of IDs), different dissolve rules (i.e. with smallest, greatest or maximum-border-share adjacent polygon, minimum total perimeter or maximum compactness) and different field updating (i.e. sum, mean or text concatenation).
The approach is illustrated by combining raster-based LandScan population data with vector administrative units to capture the ‘ambient population’ of a set of municipalities in Naples, Italy.
SCHIAVINA Marcello;
CARNEIRO FREIRE Sergio Manuel;
2017-05-22
AGILE
JRC105799
978-90-816960-7-4,
https://agile-online.org/index.php/conference/proceedings/proceedings-2017,
https://publications.jrc.ec.europa.eu/repository/handle/JRC105799,
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