Development of a new and open approach to dissolve polygons storing count data based on areal threshold
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,
Additional supporting files
| File name | Description | File type | |
|---|
