Tool NameDiversity of Categories
Tool ID21
Library IDgrid_analysis
Version1.0
Author(s)O.Conrad (c) 2015

Description

Grid based analysis of diversity. It is assumed that the input grid provides a classification (i.e. not a continuous field). For each cell it counts the number of different categories (classes) as well as the connectivity within the chosen search window.

Parameters

NameTypeIdentifierDescriptionConstraints
Input
Categoriesgrid, inputCATEGORIES
Output
Number of Categoriesgrid, outputCOUNTnumber of different categories (unique values) within search area
Diversitygrid, outputDIVERSITYdistance weighted average of the number of different categories for distance classes
Connectivitygrid, outputCONNECTIVITY
Averaged Connectivitygrid, outputCONNECTEDAVGaverage size of the area covered by each category that occurs within search area
Options
Connectivity NeighbourhoodchoiceNB_CASEAvailable Choices:
[0] Rook's case
[1] Queen's case
Default: 1
NormalizechoiceNORMALIZEAvailable Choices:
[0] no
[1] by number of cells
[2] by area size
Default: 0
Kernel TypechoiceKERNEL_TYPEThe kernel's shape.Available Choices:
[0] Square
[1] Circle
Default: 1
Radiusinteger numberKERNEL_RADIUScellsMinimum: 0
Default: 2
Weighting FunctionchoiceDW_WEIGHTINGAvailable Choices:
[0] no distance weighting
[1] inverse distance to a power
[2] exponential
[3] gaussian
Default: 3
Powerfloating point numberDW_IDW_POWERMinimum: 0.000000
Default: 2.000000
Bandwidthfloating point numberDW_BANDWIDTHBandwidth for exponential and Gaussian weightingMinimum: 0.000000
Default: 0.700000