import { OnInit, ChangeDetectorRef } from '@angular/core';
import { Letter } from '@schoolbelle/api/letter';
import { LetterReadTableService, ReadTableRowData } from '@schoolbelle/api/letter-read';
export declare class BarChartReadComponent implements OnInit {
    protected letterRead: LetterReadTableService;
    protected cdRef: ChangeDetectorRef;
    type: string;
    _rows: ReadTableRowData[];
    letter: Partial<Letter>;
    rows: ReadTableRowData[];
    constructor(letterRead: LetterReadTableService, cdRef: ChangeDetectorRef);
    getChartData(): {
        name: string;
        "value": number;
    }[];
    refresh(): void;
    ngOnInit(): void;
    single: any[];
    view: number[];
    showXAxis: boolean;
    showYAxis: boolean;
    gradient: boolean;
    showLegend: boolean;
    showXAxisLabel: boolean;
    showYAxisLabel: boolean;
    colorScheme: {
        domain: string[];
    };
    axisFormat(val: any): any;
}