import IntervalScale from './Interval.js';
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import LogScale from './Log.js';
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import Scale from './Scale.js';
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declare type intervalScaleNiceTicksResult = {
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interval: number;
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intervalPrecision: number;
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niceTickExtent: [number, number];
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};
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export declare function isValueNice(val: number): boolean;
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export declare function isIntervalOrLogScale(scale: Scale): scale is LogScale | IntervalScale;
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/**
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* @param extent Both extent[0] and extent[1] should be valid number.
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* Should be extent[0] < extent[1].
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* @param splitNumber splitNumber should be >= 1.
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*/
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export declare function intervalScaleNiceTicks(extent: [number, number], splitNumber: number, minInterval?: number, maxInterval?: number): intervalScaleNiceTicksResult;
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export declare function increaseInterval(interval: number): number;
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/**
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* @return interval precision
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*/
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export declare function getIntervalPrecision(interval: number): number;
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export declare function fixExtent(niceTickExtent: [number, number], extent: [number, number]): void;
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export declare function contain(val: number, extent: [number, number]): boolean;
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export declare function normalize(val: number, extent: [number, number]): number;
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export declare function scale(val: number, extent: [number, number]): number;
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export {};
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