import { RangeItem, RangeLegendItem } from '../../../model/models/legend.models';
import { NumericUnit } from '../../../model/models/unit.models';
import { HSLAColor } from '../../models/color.models';
export declare function createRangeLegendItem(min: number, max: number | null, index: number, background: string, label: string): RangeLegendItem;
export declare function round(value: number): number;
export declare function limit(value: number, min: number, max: number): number;
export declare function getSymbolFromUnit(unit: NumericUnit | undefined): string;
export declare function computeRangeItemColor(base: HSLAColor, delta: HSLAColor, index: number): string;
/**
 * Analyzes a dataset to determine if logarithmic scaling should be used for bucketing.
 *
 * @param values - Array of numeric values to analyze
 * @returns Boolean indicating whether logarithmic scaling is recommended
 */
export declare function shouldUseLogScaling(values: number[]): boolean;
/**
 * Computes logarithmic range legend items for data with skewed distribution.
 *
 * @param max - Maximum range item
 * @param min - Minimum range item
 * @param steps - Number of buckets to create
 * @param symbol - Unit symbol to append to labels
 * @returns Array of range legend items with logarithmic distribution
 */
export declare function computeLogarithmicRanges(max: RangeItem, min: RangeItem, steps: number, symbol: string): RangeLegendItem[];
/**
 * Determines the optimal number of buckets based on data distribution.
 * Fewer buckets are used for highly skewed distributions.
 *
 * @param min - Minimum data value
 * @param max - Maximum data value
 * @param dataPoints - Array of data points to analyze
 * @returns Optimal number of buckets
 */
export declare function determineOptimalBucketCount(min: number, max: number, dataPoints: number[]): number;
/**
 * Rounds a number to a "nice" human-readable value based on its magnitude.
 *
 * @param value - Number to round
 * @param roundUp - Whether to round up (true) or down (false)
 * @returns Rounded value
 */
export declare function roundToSignificantThreshold(value: number, roundUp?: boolean): number;
/**
 * Gets a distinct color from the predefined palette.
 *
 * @param index - Zero-based index for color selection
 * @returns Hex color string from the distinct color palette
 */
export declare function getDistinctColor(index: number): string;
/**
 * Determines if using default color range that should be replaced with distinct colors.
 *
 * @param minColor - Minimum range background color
 * @param maxColor - Maximum range background color
 * @returns True if using default colors that should be replaced
 */
export declare function shouldUseDistinctColors(minColor: string, maxColor: string): boolean;