Tool Name	Sieve Classes
Tool ID	15
Library ID	grid_filter
Version	1.0
Author(s)	O.Conrad (c) 2014

Description

The 'Sieve Classes' tool counts the number of adjacent cells sharing the same value (the class identifier). Areas that are formed by less cells than specified by the threshold will be removed (sieved), i.e. they are set to no-data.

Parameters

Name	Type	Identifier	Description	Constraints
Input
Classes	grid, input	INPUT
Output
Sieved Classes	grid, output, optional	OUTPUT
Options
Neighbourhood	choice	MODE	Neumann: the four horizontally and vertically neighboured cells; Moore: all eight adjacent cells	Available Choices: [0] Neumann [1] Moore Default: 0
Minimum Threshold	integer number	THRESHOLD	Minimum number of cells in a group of adjacent cells.	Minimum: 2 Default: 4
Class Selection	choice	ALL		Available Choices: [0] single class [1] all classes Default: 1
Class Identifier	floating point number	CLASS		Default: 1.000000