Question 1

How accurate is arc.js for flight planning?

Accepted Answer

arc.js uses aviation-grade algorithms, making it highly accurate for great circle calculations. However, it doesn't account for real-world factors like wind or airspace restrictions, so it's best for basic route visualization, not operational planning.

Question 2

Can I use arc.js with React or Vue.js for web maps?

Accepted Answer

Yes, since it outputs GeoJSON, you can easily pass the data to mapping libraries like Mapbox GL JS or Leaflet in React/Vue components. The cross-platform compatibility ensures it runs smoothly in browser environments.

Question 3

Should I use arc.js or Turf.js for great circle routes?

Accepted Answer

arc.js powers Turf.js's greatCircle function, so if you only need great circle calculations, arc.js is lightweight. For a broader geospatial toolkit with many functions, Turf.js is the better choice despite being larger.

Question 4

How to handle polar routes with arc.js?

Accepted Answer

arc.js handles dateline crossing automatically, but for polar routes, you might need to increase the offset parameter or manually adjust coordinates, as the library's focus is on standard great circle paths without specialized polar handling.

Question 5

Does arc.js support 3D coordinates or altitude?

Accepted Answer

No, arc.js only works with 2D geographic coordinates (longitude and latitude) on a sphere. It doesn't support altitude or 3D geometry, limiting its use for applications requiring elevation data.

Question 6

How to improve performance when generating many arcs?

Accepted Answer

Reduce the npoints parameter in the Arc method for fewer intermediate points, trading accuracy for speed. For bulk calculations, consider batching in Node.js to avoid browser performance hits.

Arc.js

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