Multiscale mesh of polygons: Cadastre IGAC, Colombia

The following interactive map show  feature density of the information included in the national cadastral geodatabase published by IGAC in their open data portal.

The data comes from a multiscale mesh of polygons generated by Arcgis Pro.  Usually those polygons are used to create vector tiles optimized for feature density across the multiple levels of detail, but in these maps  we are using them as a derived datasource that  help us to  summarize a big geospatial dataset.

Those summarizations could be used as a first step to implement the Shneiderman’s data visualization mantra  for geospatial data:

Overview first, zoom and filter, then details-on-demand“.

(Btw: Maps were created using Carto).

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