repositioned

Convert positions from one coordinate system to another. Currently supports the conversion of a customOffset coordinate system to WGS84.

Hello repositioned!

const repositioned = require('repositioned');

// The coordinate system has its origin at 73.57123°W, 45.50883°N
//   and uses feet as a unit of measurement
const COORDINATE_SYSTEM = {
    type: "customOrigin",
    originOffset: [ -73.57123, 45.50883, 0 ],
    measurementUnits: [ 'ft', 'ft', 'ft' ]
};

// This is the position in the customOrigin coordinate system
let position = [ -2240.450648739, 4071.88290589, 32.8084 ];

// This is the position converted to WGS84
let convertedPosition = repositioned.toWGS84(position, COORDINATE_SYSTEM);

console.log(convertedPosition);

Which should yield [ -73.58, 45.52, 10 ].

Coordinate Systems

customOrigin

A customOrigin coordinate system uses an origin other than 0° longitude, 0° latitude and measurements in standard units of a given type in each axis.

{
  originOffset: [ -73.57123, 45.50883, 50 ],
  measurementUnits: [ 'deg', 'deg', 'm' ],
  horizontalPlaneRotation: 0
}

At present, the originOffset coordinate system is assumed to be WGS84. In future, an additional property may be added to specify this coordinate system.

Contributing

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Security

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License

MIT License

Copyright (c) 2025 reelyActive

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