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Table 1 Description of AccessMod input data sets. Names of mandatory data sets are in bold

From: AccessMod 3.0: computing geographic coverage and accessibility to health care services using anisotropic movement of patients

Type of data Name Description/additional information
Raster population distribution grid Spatially-explicit distribution of population over the area. Point estimates coming from survey of administrative units should not be attributed to a single grid cell, but would need to be appropriately spread over the subunit surface of the administrative units
  landuse grid Spatial distribution of the different categories of land use on which travelling speed may be different. This grid can be combined in AccessMod with additional landscape elements (e.g. roads, rivers) to obtain the final landcover grid
  digital elevation model (DEM) Altitude distribution used to derive slopes and correct travelling speeds in the case of anisotropic movements
  exclusion area grid In a scaling-up analysis, it can define an area where no new health facility can be placed but where some population might nevertheless be living (e.g. swamps, military zone, disaster prone areas, etc)
Vector health facilities locations This point shapefile contains the geographic locations of the existing network of health facilities. Its attribute table contains the population coverage capacity and the facultative maximum travelling time for each health facility
  road network This line shapefile contains the road network. Different types of roads can be incorporated and combined with the landuse grid
  barriers to movements Both line and polygon shapefiles can be treated as complete barriers to movement and can be integrated in the final landcover grid
Tabular travelling scenario This file defines the travelling speed and the mode of transportation (e.g. walking, bicycling) of each landcover
  new health facility information table This file is used in the scaling-up analysis. It holds information on the different types of health facility and their associated population coverage capacity