Name: Dispersion (DIS) LEAC 2009

Display Field:

Type: Raster Layer

Geometry Type: null

Description: The new urban sprawl metric, named „Weighted Urban Proliferation“ (WUP) is based on the following definition of urban sprawl: the more area built over in a given landscape (amount of built-up area) and the more dispersed this built-up area in the landscape (spatial configuration), and the higher the uptake of built-up area per inhabitant or job (lower utilization intensity in the built-up area), the higher the degree of urban sprawl. Weighted Urban Proliferation (WUP) metric has three components: the percentage of built-up areas, the dispersion of the built-up areas, and land uptake per person.Degree of urban dispersion (DIS) characterizes the settlement pattern in a geometric perspective and is based on the distances between any two points within built-up areas (average taken over all possible pairs of points, up to a maximum distance called the horizon of perception). The farther apart the two points, the higher their contribution to dispersion. This metric is expressed in urban permeation units (UPU) per m2 of built-up area. Higher values indicate a higher dispersion (between 0 and 49.7 UPU/m2). Dispersion is weighted by the w1(DIS) function to make those parts of the landscape where built-up areas are more dispersed more clearly perceived (w1(DIS) > 1), while compact settled areas are multiplied by a lower weighting (i.e. < 1).

Copyright Text:

Default Visibility: true

MaxRecordCount: 0

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: false

Supports Statistics: false

Has Labels: false

Can Modify Layer: false

Can Scale Symbols: false

Supports Datum Transformation: true

Extent:

XMin: -5345725
YMin: 3024780
XMax: 7871275
YMax: 11713780
Spatial Reference: 102100  (3857)

Drawing Info:

N/A

Advanced Query Capabilities:

Supports Statistics: false
Supports OrderBy: false
Supports Distinct: false
Supports Pagination: false
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: false
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false
Supports Percentile Statistics: false
Supports Having Clause: false
Supports Count Distinct: false
Supports Time Relation: true
Supports Sql Format: true
Supports Query Analytic: false
Supports Query With Current User: true

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeNone

Type ID Field: null

Fields: None


Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

  Iteminfo   Thumbnail   Metadata