import { ChartDataSets } from 'chart.js';
import BoundaryChartDataSets from './boundary-chart-datasets.model';
export declare class ChartPointsExcerptService {
    constructor();
    excerptChartData(outputData: ChartDataSets[], chartData: BoundaryChartDataSets[], from: Date, to: Date, hasMargin?: boolean): void;
    private excerptChartPoints;
    private excerptByTimeRange;
    private excerptByMaxDataPoints;
    private getChartPointIndicesOfEachTimespan;
    private getAggregatedValue;
}