Izochrony AZO (PSP)
Drive-time service areas (isochrones) for fire & rescue units — 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 straży)
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 — 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 — 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 — 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 — 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 straży (AZO) — analiza sieciowa offline z malejącym buforem (graf + Dijkstra, alarmowanie per typ, bariery, R_max), liczona superźródłem; analiza w pełni offline, bez API; od 1.8 osobny, opcjonalny algorytm pobiera dane GUGiK (BDOT10k, NMT) dla wskazanego powiatu. Materiał poglądowy; do celów urzędowych: sieć BDOT10k i dane KW/KP PSP.