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0.2a - Rhapta

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@Confoederatio Confoederatio released this 14 Jun 07:09
· 138 commits to main since this release
0.2a-rhapta
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Patch Notes. 0.2 Alpha (Rhapta).

(14 June 2025). 08:09GMT. Stable Release.

  • Added 11-14k cities from the Global Human Settlement Layer (GHSL) for data post-1975AD, along with processing for their background population rasters (GeoTIFF > 32-bit int RGBA PNG), bringing the total number of historical cities in the dataset to 40.000+.
  • Began laying foundations for radial buffering and density calculations to model realistic spread in line with work from Angel, Bairoch, and Clark (see Memorandum On Urban Populations: The Fourth Era (1815AD-1991AD)).
  • Corrected for metropolitan and agglomerated populations by subtracting subadministrative census divisions from the overall agglomeration for applicable years. There may be negative populations for intermediate processing purposes (i.e. for gridmapping to correct duplicate subadministrative divisions, i.e. London (agglomeration), Inner London, Battersea).
  • Improved Google Maps/OSM geolocator methods.
  • Improved reliability of Chandler-Modelski, Reba et al., and processing for Populstat.
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