src/processor/negativeDataFilter.ts

/*
* 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
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/

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 (typeof curValue === 'number' && !isNaN(curValue) && curValue < 0) {
                    return false;
                }
                return true;
            });
        }
    };
}