accra/osm/README.md

Accra Data for WHO Study

  1. accra-bldg.Rds has 24,490 osmdata buildings (plus some multipolygons)
  2. accra-hw.Rds has 26,411 osmdata highways
  3. accra-bs.Rds has 2,451 osmdata bus stops
  4. nodes_new.Rds has 131,349 worldpop population density estimates projected onto the street network via functions in who-data/R/download-data.R.
  5. accra-flows-to-busstops.Rds contains single column of flows from all worldpop points (nodes_new.Rds)) to every single bus stop. There are 156,481 flow estimates, corresponding to the size of dodgr::weight_streetnet(accra-hw).
  6. accra-flows-from-busstops.Rds contains flows from all bus stops to all potential places of employment (buildings with other than exclusive residential purpose).

The final two of these currently take a long time to calculate (just getting results for the moment; efficiency will come later). They respectively represent effective first mile and last mile pedestrian journeys make to connect with the bus system.



ATFutures/who-data documentation built on Dec. 24, 2019, 9:30 p.m.