Computes reachable network nodes from origin points within a maximum network cost.
vector network service-area
| Name | Description | Required | Default |
|---|---|---|---|
input | Input line network layer. | Required | network.shp |
origins | Origin point layer. | Required | origins.shp |
max_cost | Maximum reachable path cost. | Required | 1000.0 |
ring_costs | Optional comma-separated ring thresholds for multi-ring outputs (for example: 5,10,15). | Optional | — |
snap_tolerance | Optional node snapping tolerance for graph construction. | Optional | — |
max_snap_distance | Optional max distance from origin points to nearest network node. | Optional | — |
output_mode | Output mode: 'nodes' (default), 'edges' for cost-trimmed reachable edge segments, or 'polygons' for per-origin isochrone-like polygons from reachable edge envelopes. | Optional | — |
polygon_merge_origins | If true and output_mode='polygons', dissolve overlapping origin polygons into merged coverage per ring instead of emitting one polygon per origin. | Optional | — |
mode_field | Optional line attribute field identifying travel mode per segment; enables mode-aware service-area costs. | Optional | — |
default_mode_speed | Default mode speed in coordinate-units per time unit when mode_field is provided (default: 1). | Optional | — |
mode_speed_overrides | Optional comma-separated mode:speed overrides (for example: walk:1.4,drive:12). | Optional | — |
allowed_modes | Optional comma-separated allow-list of modes to include when mode_field is provided. | Optional | — |
edge_cost_field | Optional numeric line field used as an impedance multiplier for segment length. | Optional | — |
one_way_field | Optional line field marking one-way digitized edges (true/1/yes means from first to second vertex only). | Optional | — |
blocked_field | Optional line field marking blocked/closed edges to exclude from routing (true/1/yes blocks). | Optional | — |
barriers | Optional barrier point layer; nearest network nodes are blocked from traversal. | Optional | — |
barrier_snap_distance | Optional max distance from each barrier point to a network node for blocking. | Optional | — |
turn_penalty | Optional additive cost applied to non-straight turns at network nodes. | Optional | — |
u_turn_penalty | Optional additive cost applied to U-turn transitions. | Optional | — |
forbid_u_turns | If true, disallow U-turn transitions. | Optional | — |
forbid_left_turns | If true, disallow left-turn transitions. | Optional | — |
forbid_right_turns | If true, disallow right-turn transitions. | Optional | — |
turn_restrictions_csv | Optional CSV of turn transitions using columns prev_x,prev_y,node_x,node_y,next_x,next_y. Optional columns: forbidden (default true when no turn_cost column is provided) and turn_cost (or penalty/cost/extra_cost) for per-turn additive cost. | Optional | — |
temporal_cost_profile | Optional CSV defining time-dependent edge costs (columns: edge_id,dow,start_minute,end_minute,value). | Optional | — |
temporal_edge_id_field | Optional network field used to match temporal_cost_profile edge_id values (default EDGE_ID). | Optional | — |
departure_time | Optional RFC3339 departure time used for temporal profile lookup. | Optional | — |
temporal_mode | Optional temporal interpretation mode: multiplier or absolute. | Optional | — |
temporal_fallback | Optional fallback when temporal row is missing: static_cost or error. | Optional | — |
temporal_profile_report | Optional JSON output path for temporal profile diagnostics (coverage, unmatched edges, fallback usage). | Optional | — |
output | Output service-area vector path. | Required | — |
Finds all nodes reachable from origins within max_cost.
wbe.network_service_area(input='network.shp', max_cost=1000.0, origins='origins.shp', output='service_area_nodes.shp')