Sandbox::https://github.com/apache/echarts/blob/master/src/processor/negativeDataFilter.ts

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* Licensed to the Apache Software Foundation (ASF) under one

* or more contributor license agreements. See the NOTICE file

* distributed with this work for additional information

* regarding copyright ownership. The ASF licenses this file

* to you under the Apache License, Version 2.0 (the

* "License"); you may not use this file except in compliance

* with the License. You may obtain a copy of the License at

* http://www.apache.org/licenses/LICENSE-2.0

* Unless required by applicable law or agreed to in writing,

* software distributed under the License is distributed on an

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import { isNumber } from 'zrender/src/core/util';

import { StageHandler } from '../util/types';

export default function negativeDataFilter(seriesType: string): StageHandler {

return {

seriesType: seriesType,

reset: function (seriesModel, ecModel) {

const data = seriesModel.getData();

data.filterSelf(function (idx) {

// handle negative value condition

const valueDim = data.mapDimension('value');

const curValue = data.get(valueDim, idx);

if (isNumber(curValue) && !isNaN(curValue) && curValue < 0) {

return false;

}

return true;

});

}

};

}