Name: NHF Hexagons

Display Field: grid_id

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: In an effort to integrate information from a wide range of data sets into a single spatially referenced grid that can be used as an annotated spatial index of data layers, facilitate data discovery, and enhance research, personnel at the Kansas Biological Survey at the University of Kansas developed the Nested Hexagon Framework (NHFv2). The NHFv2 is comprised of four nested spatial scale mapping units (1 km2 Hexagons, 7 km2 Cogs, 49 km2 Wheels, and 343 km2 Rings) and currently covers all of North and Central America, with the potential to be expanded to other global extents due to its unique hierarchical number system and spatial tiling based around 5 degree by 5 degree latitude and longitude tiles. Data can be referenced to any of the spatial scales (hex, cog, wheel, ring) depending on the spatial precision and/or sensitivity of the data. The NHFv2 allows for the sharing of information without revealing the raw spatial data or precise spatial locations so that users can quickly get a summary of the features and conditions present in a given cell. The original version of the NHF had a similar nested structure, but was based around mapping cells using miles instead of kilometers. To be better suited for scientific integration and international applications, the process framework was rebuilt around a one square kilometer hexagon grid and renamed as NHFv2 to keep it distinct.

Copyright Text: Kansas Applied Remote Sensing Kansas Biological Survey at the University of Kansas Higuchi Hall 2101 Constant Avenue Lawrence, KS 66047-3759 kars.ku.edu

Default Visibility: false

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 250000

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: -1.13889928359E7
YMin: 4416776.410400003
XMax: -1.05048053368E7
YMax: 4896709.991800003
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSFSSolid
Color: [68, 101, 137, 127]
Outline:
Style: esriSLSSolid
Color: [0, 0, 0, 127]
Width: 1
Label: N/A
Description: N/A
Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• objectid ( type: esriFieldTypeOID, alias: objectid )
• grid_id ( type: esriFieldTypeString, alias: grid_id, length: 8 )
• ring_id ( type: esriFieldTypeString, alias: ring_id, length: 12 )
• wheel_id ( type: esriFieldTypeString, alias: wheel_id, length: 14 )
• cog_id ( type: esriFieldTypeString, alias: cog_id, length: 16 )
• hexagon_id ( type: esriFieldTypeString, alias: hexagon_id, length: 18 )
• shape ( type: esriFieldTypeGeometry, alias: shape )
• st_area(shape) ( type: esriFieldTypeDouble, alias: st_area(shape) )
• st_length(shape) ( type: esriFieldTypeDouble, alias: st_length(shape) )

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

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