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Add tests for missing modules in @turf/turf
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| var featureEach = require('@turf/meta').featureEach; | ||
|
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||
| /** | ||
| * Create Bins | ||
| * | ||
| * @private | ||
| * @param {FeatureCollection} geojson GeoJSON Features | ||
| * @param {string|number} property Property values are used to create bins | ||
| * @returns {Object} bins with Feature IDs | ||
| * @example | ||
| * const geojson = turf.featureCollection([ | ||
| * turf.point([0, 0], {cluster: 0, foo: 'null'}), | ||
| * turf.point([2, 4], {cluster: 1, foo: 'bar'}), | ||
| * turf.point([5, 1], {0: 'foo'}), | ||
| * turf.point([3, 6], {cluster: 1}), | ||
| * ]); | ||
| * createBins(geojson, 'cluster'); | ||
| * //= { '0': [ 0 ], '1': [ 1, 3 ] } | ||
| */ | ||
| function createBins(geojson, property) { | ||
| var bins = {}; | ||
|
|
||
| featureEach(geojson, function (feature, i) { | ||
| var properties = feature.properties || {}; | ||
| if (properties.hasOwnProperty(property)) { | ||
| var value = properties[property]; | ||
| if (bins.hasOwnProperty(value)) bins[value].push(i); | ||
| else bins[value] = [i]; | ||
| } | ||
| }); | ||
| return bins; | ||
| } | ||
|
|
||
| /** | ||
| * Apply Filter | ||
| * | ||
| * @private | ||
| * @param {*} properties Properties | ||
| * @param {*} filter Filter | ||
| * @returns {Boolean} applied Filter to properties | ||
| */ | ||
| function applyFilter(properties, filter) { | ||
| if (properties === undefined) return false; | ||
| var filterType = typeof filter; | ||
|
|
||
| // String & Number | ||
| if (filterType === 'number' || filterType === 'string') return properties.hasOwnProperty(filter); | ||
| // Array | ||
| else if (Array.isArray(filter)) { | ||
| for (var i = 0; i < filter.length; i++) { | ||
| if (!applyFilter(properties, filter[i])) return false; | ||
| } | ||
| return true; | ||
| // Object | ||
| } else { | ||
| return propertiesContainsFilter(properties, filter); | ||
| } | ||
| } | ||
|
|
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| /** | ||
| * Properties contains filter (does not apply deepEqual operations) | ||
| * | ||
| * @private | ||
| * @param {*} properties Properties | ||
| * @param {Object} filter Filter | ||
| * @returns {Boolean} does filter equal Properties | ||
| * @example | ||
| * propertiesContainsFilter({foo: 'bar', cluster: 0}, {cluster: 0}) | ||
| * //= true | ||
| * propertiesContainsFilter({foo: 'bar', cluster: 0}, {cluster: 1}) | ||
| * //= false | ||
| */ | ||
| function propertiesContainsFilter(properties, filter) { | ||
| var keys = Object.keys(filter); | ||
| for (var i = 0; i < keys.length; i++) { | ||
| var key = keys[i]; | ||
| if (properties[key] !== filter[key]) return false; | ||
| } | ||
| return true; | ||
| } | ||
|
|
||
| /** | ||
| * Filter Properties | ||
| * | ||
| * @private | ||
| * @param {*} properties Properties | ||
| * @param {string[]} keys Used to filter Properties | ||
| * @returns {*} filtered Properties | ||
| * @example | ||
| * filterProperties({foo: 'bar', cluster: 0}, ['cluster']) | ||
| * //= {cluster: 0} | ||
| */ | ||
| function filterProperties(properties, keys) { | ||
| if (!keys) return {}; | ||
| if (!keys.length) return {}; | ||
|
|
||
| var newProperties = {}; | ||
| for (var i = 0; i < keys.length; i++) { | ||
| var key = keys[i]; | ||
| if (properties.hasOwnProperty(key)) newProperties[key] = properties[key]; | ||
| } | ||
| return newProperties; | ||
| } | ||
|
|
||
| module.exports = { | ||
| createBins: createBins, | ||
| applyFilter: applyFilter, | ||
| propertiesContainsFilter: propertiesContainsFilter, | ||
| filterProperties: filterProperties | ||
| }; |
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