Package index • evacpath

Package overview

Package-level help and a concise workflow overview.

evacpath evacpath-package: evacpath: Least-cost pedestrian evacuation modeling in R

Run the full evacuation modeling workflow and write outputs.

Read, clean, project, and prepare hazard, road, elevation, and tsunami inputs.

read_spatial(): Read a spatial input
prepare_evac_inputs(): Read and project the core evacuation inputs
prepare_hazard_zone(): Prepare a hazard zone from an inundation raster
prepare_tsunami_zones(): Prepare separate tsunami zones for escape analysis and visualization
clean_roads(): Clean a road/pathway network
crop_roads_to_inner_extent(): Crop roads to an inset extent before escape-point detection
make_region_area(): Create a broader analysis region around a study area
make_roads_in_zone(): Create a buffered road area inside an inundation or analysis zone
make_road_aware_escape_zone(): Add buffered road corridors to an escape-boundary zone

Build origin grids, road masks, escape points, and evacuation polygons.

make_evac_grid(): Create an evacuation grid
make_road_origins(): Create road-based origin points inside the evacuation zone
find_escape_points(): Identify escape/safety points where roads cross the hazard-zone boundary
make_road_mask(): Create a road-constrained analysis mask
make_evac_polygons(): Create evacuation-distance and evacuation-time polygons

Build conductance surfaces and calculate least-cost distance and evacuation time.

make_conductance_surface(): Create a slope-based conductance surface
calc_min_distance_to_safety(): Calculate minimum least-cost distance from origins to safety
calc_evac_time(): Convert distance to evacuation time
calculate_lc_path(): Calculate a least-cost path between one origin and one destination
calculate_min_dist(): Calculate the minimum path distance from a list of least-cost paths
interpolate_distance_surface(): Interpolate a distance surface from least-cost distance points

Compare assumptions, map bottlenecks, diagnose models, and validate routes.