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Said TurkseverandClaude Opus 5.5
4c383214f7
aircraft_in_area stats summarized altitude over airborne aircraft but speed over every match, so parked aircraft pulled the mean speed toward zero. Both figures now use the same airborne subset, and the on-ground fixture is stationary so the test can tell the difference. Reserved AIS ship-type codes 100 to 255 now read as unknown, as type 0 does, instead of showing up in the breakdown as their own type. Adds tests for an area where every aircraft is on the ground and for find_vessel type and destination normalization, and notes in the changelog fragment that every vessel answer is now normalized. Co-Authored-By: Claude Opus 5.5 <[email protected]>
48 lines
1.2 KiB
JavaScript
48 lines
1.2 KiB
JavaScript
/**
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* @module vesselTypes
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* @description AIS ship-type codes (ITU-R M.1371) to family names, with no
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* browser or i18n dependencies so the server-side query tools can use it.
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*/
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const NUMERIC_TYPE_SPECIALS = {
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30: 'FISHING',
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31: 'TOWING',
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32: 'TOWING',
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33: 'DREDGER',
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34: 'DIVE OPS',
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35: 'MILITARY',
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36: 'SAILING',
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37: 'PLEASURE',
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50: 'PILOT',
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51: 'SAR',
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52: 'TUG',
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53: 'PORT TENDER',
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54: 'ANTI-POLLUTION',
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55: 'LAW ENFORCE',
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58: 'MEDICAL',
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};
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const NUMERIC_TYPE_FAMILIES = {
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4: 'HIGH-SPEED',
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6: 'PASSENGER',
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7: 'CARGO',
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8: 'TANKER',
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9: 'OTHER',
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};
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/**
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* Resolve an AIS type to display text: bare numeric ship-type codes map to
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* family names ("71" → "CARGO"); text types pass through unchanged. Code 0
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* ("not available") and the reserved codes 100 to 255 name no type and
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* resolve to "".
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* @param {string} type Raw AIS type.
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* @returns {string}
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*/
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export function normalizeVesselType(type) {
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const text = String(type || '').trim();
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if (!text || !/^\d+$/.test(text)) return text;
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const code = Number(text);
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if (code <= 0 || code >= 100) return '';
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if (NUMERIC_TYPE_SPECIALS[code]) return NUMERIC_TYPE_SPECIALS[code];
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return NUMERIC_TYPE_FAMILIES[Math.floor(code / 10)] || 'OTHER';
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}
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