/**
 * Single coordinate system creator.
 */
define(function (require) {
    var Single = require('./Single');
    /**
     * Create single coordinate system and inject it into seriesModel.
     *
     * @param {module:echarts/model/Global} ecModel
     * @param {module:echarts/ExtensionAPI} api
     * @return {Array.<module:echarts/coord/single/Single>}
     */
    function create(ecModel, api) {
        var singles = [];
        ecModel.eachComponent('singleAxis', function(axisModel, idx) {
            var single = new Single(axisModel, ecModel, api);
            single.name = 'single_' + idx;
            single.resize(axisModel, api);
            axisModel.coordinateSystem = single;
            singles.push(single);
        });
        ecModel.eachSeries(function (seriesModel) {
            if (seriesModel.get('coordinateSystem') === 'single') {
                var singleAxisIndex = seriesModel.get('singleAxisIndex');
                var axisModel = ecModel.getComponent('singleAxis', singleAxisIndex);
                seriesModel.coordinateSystem = axisModel.coordinateSystem;
            }
        });
        return singles;
    }
    require('../../CoordinateSystem').register('single', {create: create});
}); 
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