import { ElementRef } from '@angular/core';
import { D3ChartDirective, D3Element, D3MarginDirective } from './chart';
export declare class D3BarsDirective extends D3Element {
    name: string;
    barWidth: number;
    xDataName: string;
    yDataName: string;
    xScaleName: string;
    yScaleName: string;
    private _barsElement;
    private _xScale;
    private _yScale;
    constructor(chart: D3ChartDirective, el: ElementRef, margin?: D3MarginDirective);
    redraw(): void;
    private readonly x;
    private readonly y;
}