Product Details
Geovisto: Hierarchy Tool
Created: 2022
Hynek Jiří, Ing., Ph.D. (DIFS)
geographical data, GeoJSON, Geovisto, GIS, hierarchical data, Leaflet, map,
visualization
The tool represents an extension to the Geovisto library (in the form of an npm
package), providing support for visualizing hierarchical geographic data on
a map. The solution defines a data model extending the GeoJSON format (RFC 7946)
to support modeling of relationships between geographical objects (tree
structure). It also allows the assignment of zoom levels to individual
geographical objects on the map, which is used in the final visualization. The
algorithm for geographical object filtering has been integrated into the map
layers of the Geovisto library.
The tool can be used together with Geovisto map layers to create thematic maps
using object clustering to increase map clarity. Current object clustering
approaches are based on evaluating the distance between objects, which is
insufficient (e.g., when highlighting political regions, etc.).