mirror of
https://github.com/netbymatt/ws4kp.git
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79de691eef
- Add utility function to augment missing weather observation data from METAR - Switch from json() to safeJson() for centralized error handling - Data quality validation and age checks - Add null/undefined value handling for wind direction calculations
22 lines
675 B
JavaScript
22 lines
675 B
JavaScript
// wind direction
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const directionToNSEW = (Direction) => {
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// Handle null, undefined, or invalid direction values
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if (Direction === null || Direction === undefined || typeof Direction !== 'number' || Number.isNaN(Direction)) {
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return 'VAR'; // Variable (or unknown) direction
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}
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const val = Math.floor((Direction / 22.5) + 0.5);
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const arr = ['N', 'NNE', 'NE', 'ENE', 'E', 'ESE', 'SE', 'SSE', 'S', 'SSW', 'SW', 'WSW', 'W', 'WNW', 'NW', 'NNW'];
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return arr[(val % 16)];
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};
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const distance = (x1, y1, x2, y2) => Math.sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2);
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// wrap a number to 0-m
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const wrap = (x, m) => ((x % m) + m) % m;
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export {
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directionToNSEW,
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distance,
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wrap,
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};
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