/**
 * Scale interface and implementations
 *
 * Scales transform data values to pixel coordinates and vice versa.
 */
export interface Scale {
    /** Data domain [min, max] */
    domain: [number, number];
    /** Pixel range [min, max] */
    range: [number, number];
    /** Scale type identifier */
    type: "linear" | "log";
    /** Set the domain */
    setDomain(min: number, max: number): void;
    /** Set the range */
    setRange(min: number, max: number): void;
    /** Transform data value to pixel */
    transform(value: number): number;
    /** Transform pixel to data value */
    invert(pixel: number): number;
    /** Generate nice tick values */
    ticks(count?: number): number[];
}
/**
 * Linear scale - proportional mapping
 */
export declare class LinearScale implements Scale {
    domain: [number, number];
    range: [number, number];
    readonly type: "linear";
    setDomain(min: number, max: number): void;
    setRange(min: number, max: number): void;
    transform(value: number): number;
    invert(pixel: number): number;
    ticks(count?: number): number[];
}
/**
 * Logarithmic scale - for exponential data
 */
export declare class LogScale implements Scale {
    domain: [number, number];
    range: [number, number];
    readonly type: "log";
    private base;
    setDomain(min: number, max: number): void;
    setRange(min: number, max: number): void;
    transform(value: number): number;
    invert(pixel: number): number;
    ticks(count?: number): number[];
}
/**
 * Factory function to create scale by type
 */
export declare function createScale(type: "linear" | "log"): Scale;