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core_coordinates_valid2DCoordinate.js.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>core/coordinates/valid2DCoordinate.js - Jest-GeoJSON</title>
<meta
name="description"
content="An extended set of matcher functions for the Jest Javascript unit testing framework tailored to evaluating GeoJSON data."
/>
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content="jest-geojson, jest, testing, validation, geojson, test, gis, assertions, matchers, jest-tests, jest-matchers, javascript, node, npm"
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<h3>Namespaces</h3>
<ul>
<li><a href="Core.html">Core</a></li>
<li>
<a href="Core.BoundingBoxes.html">Core.BoundingBoxes</a>
<ul class="methods">
<li data-type="method">
<a href="Core.BoundingBoxes.html#.valid2DBoundingBox"
>valid2DBoundingBox</a
>
</li>
<li data-type="method">
<a href="Core.BoundingBoxes.html#.valid3DBoundingBox"
>valid3DBoundingBox</a
>
</li>
<li data-type="method">
<a href="Core.BoundingBoxes.html#.validBoundingBox">validBoundingBox</a>
</li>
</ul>
</li>
<li>
<a href="Core.Coordinates.html">Core.Coordinates</a>
<ul class="methods">
<li data-type="method">
<a href="Core.Coordinates.html#.valid2DCoordinate">valid2DCoordinate</a>
</li>
<li data-type="method">
<a href="Core.Coordinates.html#.valid3DCoordinate">valid3DCoordinate</a>
</li>
<li data-type="method">
<a href="Core.Coordinates.html#.validCoordinate">validCoordinate</a>
</li>
</ul>
</li>
<li>
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>featureCollection</a
>
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</ul>
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<li data-type="method">
<a href="Core.Geometries.html#.anyGeometry">anyGeometry</a>
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>geometryCollection</a
>
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<a href="Core.Geometries.html#.lineStringGeometry"
>lineStringGeometry</a
>
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>multiLineStringGeometry</a
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<li data-type="method">
<a href="Core.Utilities.html#.commonGeometryValidation"
>commonGeometryValidation</a
>
</li>
<li data-type="method">
<a href="Core.Utilities.html#.validGeoJSON">validGeoJSON</a>
</li>
</ul>
</li>
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<ul class="methods">
<li data-type="method">
<a href="Matchers.BoundingBoxes.html#.isValid2DBoundingBox"
>isValid2DBoundingBox</a
>
</li>
<li data-type="method">
<a href="Matchers.BoundingBoxes.html#.isValid3DBoundingBox"
>isValid3DBoundingBox</a
>
</li>
<li data-type="method">
<a href="Matchers.BoundingBoxes.html#.isValidBoundingBox"
>isValidBoundingBox</a
>
</li>
</ul>
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<a href="Matchers.Coordinates.html">Matchers.Coordinates</a>
<ul class="methods">
<li data-type="method">
<a href="Matchers.Coordinates.html#.isValid2DCoordinate"
>isValid2DCoordinate</a
>
</li>
<li data-type="method">
<a href="Matchers.Coordinates.html#.isValid3DCoordinate"
>isValid3DCoordinate</a
>
</li>
<li data-type="method">
<a href="Matchers.Coordinates.html#.isValidCoordinate"
>isValidCoordinate</a
>
</li>
</ul>
</li>
<li>
<a href="Matchers.FeatureCollections.html">Matchers.FeatureCollections</a>
<ul class="methods">
<li data-type="method">
<a href="Matchers.FeatureCollections.html#.toBeFeatureCollection"
>toBeFeatureCollection</a
>
</li>
</ul>
</li>
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<a href="Matchers.Features.html">Matchers.Features</a>
<ul class="methods">
<li data-type="method">
<a href="Matchers.Features.html#.toBeFeature">toBeFeature</a>
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<li data-type="method">
<a href="Matchers.Features.html#.toHaveID">toHaveID</a>
</li>
<li data-type="method">
<a href="Matchers.Features.html#.toHaveStringID">toHaveStringID</a>
</li>
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</li>
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<a href="Matchers.Functional.html">Matchers.Functional</a>
<ul class="methods">
<li data-type="method">
<a href="Matchers.Functional.html#.toBeValidGeoJSON"
>toBeValidGeoJSON</a
>
</li>
</ul>
</li>
<li>
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<li data-type="method">
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</li>
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>toBeGeometryCollection</a
>
</li>
<li data-type="method">
<a href="Matchers.Geometries.html#.toBeLineStringGeometry"
>toBeLineStringGeometry</a
>
</li>
<li data-type="method">
<a href="Matchers.Geometries.html#.toBeMultiLineStringGeometry"
>toBeMultiLineStringGeometry</a
>
</li>
<li data-type="method">
<a href="Matchers.Geometries.html#.toBeMultiPointGeometry"
>toBeMultiPointGeometry</a
>
</li>
<li data-type="method">
<a href="Matchers.Geometries.html#.toBeMultiPolygonGeometry"
>toBeMultiPolygonGeometry</a
>
</li>
<li data-type="method">
<a href="Matchers.Geometries.html#.toBePointGeometry"
>toBePointGeometry</a
>
</li>
<li data-type="method">
<a href="Matchers.Geometries.html#.toBePolygonGeometry"
>toBePolygonGeometry</a
>
</li>
</ul>
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</ul>
</nav>
<div id="main">
<h1 class="page-title">core/coordinates/valid2DCoordinate.js</h1>
<section>
<article>
<pre class="prettyprint source linenums"><code>/**
* Verifies a two element coordinate meets WGS-84 and GeoJSON validity requirements.
*
* @memberof Core.Coordinates
* @see https://github.com/M-Scott-Lassiter/jest-geojson/issues/1
* @param {number[]} coordinate A WGS-84 array of [longitude, latitude]
* @returns {boolean} True if a valid 2D GeoJSON coordinate. If invalid, it will throw an error.
* @throws {Error} Input must be an array of only two elments
* @throws {RangeError} Longitude must be a number between -180 and 180
* @throws {RangeError} Latitude must be a number between -90 and 90
* @example
* const goodCoord = valid2DCoordinate([10, 20]) // true
*
* const badExample1 = valid2DBoundingBox([10, -200]) // throws error for latitude being out of range
* const badExample2 = valid2DBoundingBox([10, 20, 0]) // throws error for 3D Coordinate
*/
function valid2DCoordinate(coordinate) {
if (!Array.isArray(coordinate) || coordinate.length !== 2) {
throw new Error('Coordinate must be an array of only two elments.')
}
if (
typeof coordinate[0] !== 'number' ||
coordinate[0] < -180 ||
coordinate[0] > 180 ||
// eslint-disable-next-line no-self-compare
coordinate[0] !== coordinate[0] // Accounts for NaN
) {
throw new Error('Coordinate longitude must be a number between -180 and 180.')
}
if (
typeof coordinate[1] !== 'number' ||
coordinate[1] < -90 ||
coordinate[1] > 90 ||
// eslint-disable-next-line no-self-compare
coordinate[1] !== coordinate[1] // Accounts for NaN
) {
throw new Error('Coordinate latitude must be a number between -90 and 90.')
}
return true
}
exports.valid2DCoordinate = valid2DCoordinate
</code></pre>
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