import { OnChanges } from '@angular/core';
import { TdChartOptionsService } from '@covalent/echarts/base';
import { ITdBarSeries, TdChartSeriesBarComponent } from '@covalent/echarts/bar';
import * as i0 from "@angular/core";
export type TdHistogramBinningMethod = 'squareRoot' | 'scott' | 'freedmanDiaconis' | 'sturges';
export interface ITdHistogramSeries extends ITdBarSeries {
    data?: number[] | number[][];
    method?: TdHistogramBinningMethod;
}
export declare class TdChartSeriesHistogramComponent extends TdChartSeriesBarComponent implements ITdHistogramSeries, OnChanges {
    source?: number[] | number[][];
    method?: TdHistogramBinningMethod;
    constructor(_optionsService: TdChartOptionsService);
    ngOnChanges(): void;
    getConfig(): any;
    private setOptions;
    static ɵfac: i0.ɵɵFactoryDeclaration<TdChartSeriesHistogramComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<TdChartSeriesHistogramComponent, "td-chart-series[td-histogram]", never, { "config": "config"; "id": "id"; "name": "name"; "color": "color"; "data": "data"; "animation": "animation"; "animationThreshold": "animationThreshold"; "animationDuration": "animationDuration"; "animationEasing": "animationEasing"; "animationDelay": "animationDelay"; "animationDurationUpdate": "animationDurationUpdate"; "animationEasingUpdate": "animationEasingUpdate"; "animationDelayUpdate": "animationDelayUpdate"; "tooltip": "tooltip"; "source": "source"; "method": "method"; }, {}, never, never, false, never>;
}