		# Changelog

		## [6.2.0](https://www.github.com/mljs/spectra-processing/compare/v6.1.3...v6.2.0) (2021-04-30)


		### Features

		* add absolute option in xHisotgram and matrixHistogram ([f3ea8a3](https://www.github.com/mljs/spectra-processing/commit/f3ea8a337d6464816bf9d764ca34ce10207c7a40))
		* add matrixMinMaxAbsoluteZ ([0b30854](https://www.github.com/mljs/spectra-processing/commit/0b30854e6e5e35ca6ad1461777ff178568f1e0d6))
		* add matrixMinMaxAbsoluteZ ([e8662e7](https://www.github.com/mljs/spectra-processing/commit/e8662e7c2502615e398969224230f2a8f0b8ba71))
		* allow absolute in matrixHistogram ([f4e266c](https://www.github.com/mljs/spectra-processing/commit/f4e266cb327af3e8c1459f5b622a914d1ede9c2b))

		### [6.1.3](https://www.github.com/mljs/spectra-processing/compare/v6.1.2...v6.1.3) (2021-04-29)
		@@ -4,0 +14,0 @@

package.json

		{
		"name": "ml-spectra-processing",
		"version": "6.1.3",
		"version": "6.2.0",
		"description": "Various method to process spectra",
		@@ -5,0 +5,0 @@ "main": "lib/index.js",

src/index.js

		@@ -122,2 +122,3 @@ /**
		export * from './matrix/matrixMinMaxZ';
		export * from './matrix/matrixMinMaxAbsoluteZ';
		export * from './matrix/matrixPQN';
		@@ -124,0 +125,0 @@ export * from './matrix/matrixZRescale';

src/matrix/matrixHistogram.js

		import { xHistogram } from '../x/xHistogram';

		import { matrixMinMaxAbsoluteZ } from './matrixMinMaxAbsoluteZ';
		import { matrixMinMaxZ } from './matrixMinMaxZ';

		/**
		import { matrixMinMaxZ } from './matrixMinMaxZ';
		import { xHistogram } from '../x/xHistogram';
		import { matrixMinMaxAbsoluteZ } from './matrixMinMaxAbsoluteZ';
		* Calculates an histogram of defined number of slots
		@@ -14,2 +17,3 @@ * @param {Array<Array<Number>>} [matrix] - matrix [rows][cols].
		* @param {number} [options.logBaseY] We can apply a log on the resulting histogra
		* @param {boolean} [options.absolute] Take the absolute value
		* @param {number} [options.centerX=true] Center the X value. We will enlarge the first and
		@@ -21,3 +25,3 @@ * @return {DataXY} {x,y} of the histogram
		export function matrixHistogram(matrix, options = {}) {
		const { logBaseY } = options;
		const { logBaseY, absolute } = options;
		options = JSON.parse(JSON.stringify(options));
		@@ -32,3 +36,5 @@ delete options.logBaseY;
		if (options.min === undefined \|\| options.max === undefined) {
		const minMax = matrixMinMaxZ(matrix);
		const minMax = absolute
		? matrixMinMaxAbsoluteZ(matrix)
		: matrixMinMaxZ(matrix);
		if (options.min === undefined) options.min = minMax.min;
		@@ -35,0 +41,0 @@ if (options.max === undefined) options.max = minMax.max;

src/x/xHistogram.js

		import fill from 'ml-array-sequential-fill';

		import { xAbsolute } from './xAbsolute';
		import { xCheck } from './xCheck';
		@@ -15,3 +16,4 @@ import { xMaxValue } from './xMaxValue';
		* @param {number} [options.logBaseY] We can apply a log on the resulting histogram
		* @param {number} [options.centerX=true] Center the X value. We will enlarge the first and
		* @param {boolean} [options.absolute] Take the absolute value
		* @param {number} [options.centerX=true] Center the X value. We will enlarge the first and last values.
		* @param {DataXY} [options.histogram={x:[], y:[]}] Previously existing histogram to continue to fill
		@@ -29,4 +31,9 @@ * @return {DataXY} {x,y} of the histogram
		logBaseY,
		absolute = false,
		} = options;

		if (absolute) {
		array = xAbsolute(array);
		}

		if (logBaseX) {
		@@ -33,0 +40,0 @@ array = array.slice();

lib/index.js

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