import type { Vec2 } from '../../math';
export interface KdeResult {
    grid: number[];
    density: number[];
    bandwidth: number;
}
export interface KdeOptions {
    bandwidth?: number | `silverman` | `scott`;
    n_points?: number;
    cut?: number;
    clip?: [number | null, number | null];
    range?: Vec2;
    max_samples?: number;
}
export declare function silverman_bandwidth(sorted: readonly number[]): number;
export declare function scott_bandwidth(samples: readonly number[]): number;
export declare function gaussian_kde(samples: readonly number[], opts?: KdeOptions): KdeResult;