{"name": "Izochrony AZO (PSP)", "package_name": "azo_izochrony", "description": "Drive-time service areas (isochrones) for fire & rescue units \u2014 offline network analysis (Dijkstra + decreasing buffer). Optional one-click download of open Polish reference data (BDOT10k, DTM) from GUGiK public services. (PL: izochrony czasu dotarcia jednostek stra\u017cy)", "about": "Adds Processing algorithms for fire & rescue accessibility (\"AZO\"): time-to-arrival-on-scene zones = turnout/dispatch time (per unit type, e.g. professional 3 min / volunteer 10 min) + driving along roads (speed by road class from an in-dialog table \u2014 no network preparation) + off-road approach. Method: graph + Dijkstra (minimum time to the nearest unit) + a DECREASING BUFFER (radius shrinks with the remaining time budget, with a hard R_max), densified along the network and optionally clipped by barriers (rivers, railways, water bodies). Single super-source Dijkstra \u2014 fast even at region/province scale, run in a background thread via Processing (responsive GUI, progress bar, cancellation). Also computes a population-coverage indicator on demand points. The ANALYSIS runs fully offline, with no API keys and no data leaving your machine \u2014 suitable for sensitive emergency-service data. Since 1.8 a SEPARATE, optional algorithm can fetch open Polish reference data for a chosen county (BDOT10k road network with official road-management categories, buildings, population, barriers; plus DTM) over HTTPS from GUGiK public services \u2014 this is the only part that uses the network, and only when you run it. Built around the Polish State Fire Service (PSP) and volunteer units in the national rescue system (OSP-KSRG), but applicable to any region. Indicative/educational material; for official use substitute an authoritative road network (e.g. BDOT10k) and official unit data. PL: izochrony czasu dotarcia jednostek stra\u017cy (AZO) \u2014 analiza sieciowa offline z malej\u0105cym buforem (graf + Dijkstra, alarmowanie per typ, bariery, R_max), liczona super\u017ar\u00f3d\u0142em; analiza w pe\u0142ni offline, bez API; od 1.8 osobny, opcjonalny algorytm pobiera dane GUGiK (BDOT10k, NMT) dla wskazanego powiatu. Materia\u0142 pogl\u0105dowy; do cel\u00f3w urz\u0119dowych: sie\u0107 BDOT10k i dane KW/KP PSP.", "homepage": "https://github.com/Tzargath/azo-osm", "repository": "https://github.com/Tzargath/azo-osm", "tracker": "https://github.com/Tzargath/azo-osm/issues", "author": "Tomasz Zuchlke", "tags": ["network", "routing", "dijkstra", "fire", "psp", "service area", "azo", "emergency", "isochrone"], "downloads": 457, "latest_version": "1.8.3", "versions": [{"version": "1.8.3", "experimental": false, "qgis_min": "3.22.0", "qgis_max": "4.99.0", "downloads": 16, "uploaded_by": null, "upload_datetime": "2026-10-29T03:45:58.513865"}, {"version": "1.6.2", "experimental": false, "qgis_min": "3.22.0", "qgis_max": "4.99.0", "downloads": 439, "uploaded_by": "Tzargath", "upload_datetime": "2026-06-21T13:26:33.699025"}]}