kepler.gl
Version:
kepler.gl is a webgl based application to visualize large scale location data in the browser
93 lines (90 loc) • 10.3 kB
JavaScript
;
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports["default"] = void 0;
exports.getGeoJSON = getGeoJSON;
var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));
var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));
var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));
var _toConsumableArray2 = _interopRequireDefault(require("@babel/runtime/helpers/toConsumableArray"));
var _supercluster = _interopRequireDefault(require("supercluster"));
var _memoize = _interopRequireDefault(require("lodash/memoize"));
// SPDX-License-Identifier: MIT
// Copyright contributors to the kepler.gl project
function getGeoJSON(data, getPosition, filterData) {
var raw = typeof filterData === 'function' ? data.filter(filterData) : data;
return raw.map(function (d) {
return {
type: 'Point',
properties: {
data: d,
points: [d],
point_count: 1,
point_count_abbreviated: '1'
},
geometry: {
coordinates: getPosition(d)
}
};
}).filter(function (d) {
return d.geometry.coordinates.every(Number.isFinite);
});
}
var clusterResolver = function clusterResolver(_ref) {
var clusterRadius = _ref.clusterRadius;
return "".concat(clusterRadius);
};
var getClusterer = function getClusterer(_ref2) {
var clusterRadius = _ref2.clusterRadius,
geoJSON = _ref2.geoJSON;
return new _supercluster["default"]({
maxZoom: 20,
radius: clusterRadius,
reduce: function reduce(accumulated, props) {
accumulated.points = [].concat((0, _toConsumableArray2["default"])(accumulated.points), (0, _toConsumableArray2["default"])(props.points));
},
map: function map(props) {
return {
points: [props.data]
};
}
}).load(geoJSON);
};
var ClusterBuilder = exports["default"] = /*#__PURE__*/function () {
function ClusterBuilder() {
(0, _classCallCheck2["default"])(this, ClusterBuilder);
(0, _defineProperty2["default"])(this, "clusterer", void 0);
this.clusterer = (0, _memoize["default"])(getClusterer, clusterResolver);
}
return (0, _createClass2["default"])(ClusterBuilder, [{
key: "clustersAtZoom",
value: function clustersAtZoom(_ref3) {
var bbox = _ref3.bbox,
clusterRadius = _ref3.clusterRadius,
geoJSON = _ref3.geoJSON,
zoom = _ref3.zoom;
var clusterer = this.clusterer({
clusterRadius: clusterRadius,
geoJSON: geoJSON
});
// map clusters to formatted bins to be passed to deck.gl bin-sorter
var clusters = clusterer.getClusters(bbox, zoom).map(function (c, i) {
return {
points: c.properties.points,
position: c.geometry.coordinates,
index: i
};
});
return clusters;
}
}, {
key: "clearClustererCache",
value: function clearClustererCache() {
var _this$clusterer$cache, _this$clusterer$cache2;
(_this$clusterer$cache = (_this$clusterer$cache2 = this.clusterer.cache).clear) === null || _this$clusterer$cache === void 0 || _this$clusterer$cache.call(_this$clusterer$cache2);
}
}]);
}();
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