kepler.gl
Version:
kepler.gl is a webgl based application to visualize large scale location data in the browser
75 lines (71 loc) • 11.2 kB
JavaScript
;
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.DataForm = void 0;
exports.createDataContainer = createDataContainer;
exports.createIndexedDataContainer = createIndexedDataContainer;
exports.getSampleData = getSampleData;
var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));
var _arrowDataContainer = require("./arrow-data-container");
var _rowDataContainer = require("./row-data-container");
var _indexedDataContainer = require("./indexed-data-container");
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { (0, _defineProperty2["default"])(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; } // SPDX-License-Identifier: MIT
// Copyright contributors to the kepler.gl project
var DataForm = exports.DataForm = {
ROWS_ARRAY: 'ROWS_ARRAY',
COLS_ARRAY: 'COLS_ARRAY'
};
var defaultOptions = {
inputDataFormat: DataForm.ROWS_ARRAY
};
/**
* Creates a data container wrapper for the data.
* @param data Data.
* @param options Options.
* @returns A data container object which is based on data and options.
*/
function createDataContainer(data) {
var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : defaultOptions;
options = _objectSpread(_objectSpread({}, defaultOptions), options);
if (options.inputDataFormat === DataForm.ROWS_ARRAY) {
return new _rowDataContainer.RowDataContainer({
rows: data,
fields: options.fields
});
} else if (options.inputDataFormat === DataForm.COLS_ARRAY) {
return new _arrowDataContainer.ArrowDataContainer({
cols: data,
fields: options.fields,
arrowTable: options.arrowTable
});
}
throw Error('Failed to create a data container: not implemented format');
}
/**
* Creates a data container wrapper around another data container.
* @param dataContainer Parent data container.
* @param indices An array of row indices in the parent data container.
*/
function createIndexedDataContainer(dataContainer, indices) {
return new _indexedDataContainer.IndexedDataContainer(dataContainer, indices);
}
/**
* Get a sample of rows from a data container.
* @param dataContainer Data container to get samples from.
* @param sampleSize Max number of samples.
* @returns A data container which contains samples from the original data container.
*/
function getSampleData(dataContainer) {
var sampleSize = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 500;
var numberOfRows = dataContainer.numRows();
var sampleStep = Math.max(Math.floor(numberOfRows / sampleSize), 1);
var indices = [];
for (var i = 0; i < numberOfRows; i += sampleStep) {
indices.push(i);
}
return createIndexedDataContainer(dataContainer, indices);
}
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QUMsQ0FBQSxLQUFBSyxDQUFBLEdBQUFBLENBQUEsQ0FBQUMsTUFBQSxXQUFBTixDQUFBLFdBQUFFLE1BQUEsQ0FBQUssd0JBQUEsQ0FBQVIsQ0FBQSxFQUFBQyxDQUFBLEVBQUFRLFVBQUEsT0FBQVAsQ0FBQSxDQUFBUSxJQUFBLENBQUFDLEtBQUEsQ0FBQVQsQ0FBQSxFQUFBSSxDQUFBLFlBQUFKLENBQUE7QUFBQSxTQUFBVSxjQUFBWixDQUFBLGFBQUFDLENBQUEsTUFBQUEsQ0FBQSxHQUFBWSxTQUFBLENBQUFDLE1BQUEsRUFBQWIsQ0FBQSxVQUFBQyxDQUFBLFdBQUFXLFNBQUEsQ0FBQVosQ0FBQSxJQUFBWSxTQUFBLENBQUFaLENBQUEsUUFBQUEsQ0FBQSxPQUFBRixPQUFBLENBQUFJLE1BQUEsQ0FBQUQsQ0FBQSxPQUFBYSxPQUFBLFdBQUFkLENBQUEsUUFBQWUsZ0JBQUEsYUFBQWhCLENBQUEsRUFBQUMsQ0FBQSxFQUFBQyxDQUFBLENBQUFELENBQUEsU0FBQUUsTUFBQSxDQUFBYyx5QkFBQSxHQUFBZCxNQUFBLENBQUFlLGdCQUFBLENBQUFsQixDQUFBLEVBQUFHLE1BQUEsQ0FBQWMseUJBQUEsQ0FBQWYsQ0FBQSxLQUFBSCxPQUFBLENBQUFJLE1BQUEsQ0FBQUQsQ0FBQSxHQUFBYSxPQUFBLFdBQUFkLENBQUEsSUFBQUUsTUFBQSxDQUFBZ0IsY0FBQSxDQUFBbkIsQ0FBQSxFQUFBQyxDQUFBLEVBQUFFLE1BQUEsQ0FBQUssd0JBQUEsQ0FBQU4sQ0FBQSxFQUFBRCxDQUFBLGlCQUFBRCxDQUFBLElBTDlEO0FBQ0E7QUFnQk8sSUFBTW9CLFFBQVEsR0FBQUMsT0FBQSxDQUFBRCxRQUFBLEdBQUc7RUFDdEJFLFVBQVUsRUFBRSxZQUFZO0VBQ3hCQyxVQUFVLEVBQUU7QUFDZCxDQUFDO0FBRUQsSUFBTUMsY0FBb0MsR0FBRztFQUMzQ0MsZUFBZSxFQUFFTCxRQUFRLENBQUNFO0FBQzVCLENBQUM7O0FBRUQ7QUFDQTtBQUNBO0FBQ0E7QUFDQTtBQUNBO0FBQ08sU0FBU0ksbUJBQW1CQSxDQUNqQ0MsSUFBVyxFQUVhO0VBQUEsSUFEeEJDLE9BQTZCLEdBQUFmLFNBQUEsQ0FBQUMsTUFBQSxRQUFBRCxTQUFBLFFBQUFnQixTQUFBLEdBQUFoQixTQUFBLE1BQUdXLGNBQWM7RUFFOUNJLE9BQU8sR0FBQWhCLGFBQUEsQ0FBQUEsYUFBQSxLQUFPWSxjQUFjLEdBQUtJLE9BQU8sQ0FBQztFQUV6QyxJQUFJQSxPQUFPLENBQUNILGVBQWUsS0FBS0wsUUFBUSxDQUFDRSxVQUFVLEVBQUU7SUFDbkQsT0FBTyxJQUFJUSxrQ0FBZ0IsQ0FBQztNQUFDQyxJQUFJLEVBQUVKLElBQUk7TUFBRUssTUFBTSxFQUFFSixPQUFPLENBQUNJO0lBQU0sQ0FBQyxDQUFDO0VBQ25FLENBQUMsTUFBTSxJQUFJSixPQUFPLENBQUNILGVBQWUsS0FBS0wsUUFBUSxDQUFDRyxVQUFVLEVBQUU7SUFDMUQsT0FBTyxJQUFJVSxzQ0FBa0IsQ0FBQztNQUM1QkMsSUFBSSxFQUFFUCxJQUFJO01BQ1ZLLE1BQU0sRUFBRUosT0FBTyxDQUFDSSxNQUFNO01BQ3RCRyxVQUFVLEVBQUVQLE9BQU8sQ0FBQ087SUFDdEIsQ0FBQyxDQUFDO0VBQ0o7RUFFQSxNQUFNQyxLQUFLLENBQUMsMkRBQTJELENBQUM7QUFDMUU7O0FBRUE7QUFDQTtBQUNBO0FBQ0E7QUFDQTtBQUNPLFNBQVNDLDBCQUEwQkEsQ0FDeENDLGFBQXFDLEVBQ3JDQyxPQUFpQixFQUNPO0VBQ3hCLE9BQU8sSUFBSUMsMENBQW9CLENBQUNGLGFBQWEsRUFBRUMsT0FBTyxDQUFDO0FBQ3pEOztBQUVBO0FBQ0E7QUFDQTtBQUNBO0FBQ0E7QUFDQTtBQUNPLFNBQVNFLGFBQWFBLENBQzNCSCxhQUFxQyxFQUViO0VBQUEsSUFEeEJJLFVBQVUsR0FBQTdCLFNBQUEsQ0FBQUMsTUFBQSxRQUFBRCxTQUFBLFFBQUFnQixTQUFBLEdBQUFoQixTQUFBLE1BQUcsR0FBRztFQUVoQixJQUFNOEIsWUFBWSxHQUFHTCxhQUFhLENBQUNNLE9BQU8sQ0FBQyxDQUFDO0VBQzVDLElBQU1DLFVBQVUsR0FBR0MsSUFBSSxDQUFDQyxHQUFHLENBQUNELElBQUksQ0FBQ0UsS0FBSyxDQUFDTCxZQUFZLEdBQUdELFVBQVUsQ0FBQyxFQUFFLENBQUMsQ0FBQztFQUVyRSxJQUFNSCxPQUFpQixHQUFHLEVBQUU7RUFDNUIsS0FBSyxJQUFJVSxDQUFDLEdBQUcsQ0FBQyxFQUFFQSxDQUFDLEdBQUdOLFlBQVksRUFBRU0sQ0FBQyxJQUFJSixVQUFVLEVBQUU7SUFDakROLE9BQU8sQ0FBQzdCLElBQUksQ0FBQ3VDLENBQUMsQ0FBQztFQUNqQjtFQUVBLE9BQU9aLDBCQUEwQixDQUFDQyxhQUFhLEVBQUVDLE9BQU8sQ0FBQztBQUMzRCIsImlnbm9yZUxpc3QiOltdfQ==