Tool Name	Histogram Matching
Tool ID	21
Library ID	grid_calculus
Version	1.0
Author(s)	O.Conrad (c) 2019

Description

This tool alters the values of a grid so that its value distribution (its histogram), matches that of a reference grid. The first method simply uses arithmetic mean and standard deviation for adjustment, which usually is sufficient for normal distributed values. The second method performs a more precise adjustment based on the grids' histograms.

Parameters

Name	Type	Identifier	Description	Constraints
Input
Grid	grid, input	GRID
Reference Grid	grid, input	REFERENCE
Output
Adjusted Grid	grid, output, optional	MATCHED
Options
Method	choice	METHOD		Available Choices: [0] standard deviation [1] histogram Default: 1
Histogramm Classes	integer number	NCLASSES	Number of histogram classes for internal use.	Minimum: 100 Default: 10
Maximum Sample Size	integer number	MAXSAMPLES	If set to zero all data will be used to build the histograms.	Minimum: 0 Default: 1000000