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": { "alias": "config"; "required": false; }; "id": { "alias": "id"; "required": false; }; "name": { "alias": "name"; "required": false; }; "color": { "alias": "color"; "required": false; }; "data": { "alias": "data"; "required": false; }; "animation": { "alias": "animation"; "required": false; }; "animationThreshold": { "alias": "animationThreshold"; "required": false; }; "animationDuration": { "alias": "animationDuration"; "required": false; }; "animationEasing": { "alias": "animationEasing"; "required": false; }; "animationDelay": { "alias": "animationDelay"; "required": false; }; "animationDurationUpdate": { "alias": "animationDurationUpdate"; "required": false; }; "animationEasingUpdate": { "alias": "animationEasingUpdate"; "required": false; }; "animationDelayUpdate": { "alias": "animationDelayUpdate"; "required": false; }; "tooltip": { "alias": "tooltip"; "required": false; }; "source": { "alias": "source"; "required": false; }; "method": { "alias": "method"; "required": false; }; }, {}, never, never, true, never>;
}