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@allmaps/transform

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Coordinate transformation functions

allmaps.org

allmaps/allmaps

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import { Point } from '@allmaps/types'; import { DistortionMeasure } from './types.js'; export declare const supportedDistortionMeasures: string[]; /** * Compute the distortion value of selected distortion measures from the partial derivatives at a specific point * * @param distortionMeasures - The requested distortion measures * @param partialDerivativeX - The partial derivative to 'x' of the transformation, evaluated at a set point * @param partialDerivativeY - The partial derivative to 'y' of the transformation, evaluated at a set point * @param referenceScale - The reference area scaling (sigma) to take into account for certain distortion measures (like 'log2sigma'), e.g. computed via a helmert transform * @returns A map of distortion measures and distortion values at the point */ export declare function computeDistortionsFromPartialDerivatives(distortionMeasures: DistortionMeasure[], partialDerivativeX?: Point, partialDerivativeY?: Point, referenceScale?: number): Map<DistortionMeasure, number>;