Name: Protected Slope Area
Display Field: SHAPE.STArea()
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: Polygons cover any point on the island where there exists another point within a 40 foot radius that has an elevation difference of more than 12 feet .Steps used to create feature class:1. Create grid of points, 4 foot on center, covering the entire island (approx 11 million records)2. Join elevation data to points from surface (2016 Geoterra Lidar)3. Create grid of 200 foot squares, each buffered 40 feet for overlap. (The script was failing when trying to process the entire island- broke up into smaller squares to be considered one at a time.)4. Run script in project folder, which selects a point, evaluates it against every point within 40 feet, and returns "1" if high slope condition is met, or "0" if not. (Script currently located in M:/ArcMap Documents/DSG/ForHolly/2019 Tree Slope Permit)5. Buffer "1" points, merge and smooth until it looks good (we weren't going for extreme accuracy)
Copyright Text: Mercer Island IGS
Default Visibility: true
MaxRecordCount: 1000
Supported Query Formats: JSON, geoJSON
Min Scale: 10000
Max Scale: 0
Supports Advanced Queries: true
Supports Statistics: true
Has Labels: false
Can Modify Layer: false
Can Scale Symbols: false
Use Standardized Queries: true
Supports Datum Transformation: true
Extent:
XMin: 1289704.615209639
YMin: 194418.79623134434
XMax: 1302752.6054738015
YMax: 220615.99876773357
Spatial Reference: 2926
(2926)
Drawing Info:
Renderer:
Simple Renderer:
Symbol: Style: esriSFSSolid
Color: [85, 255, 0, 255]
Outline:
Style: esriSLSSolid
Color: [85, 255, 0, 255]
Width: 0
Label:
Description:
Transparency: 50
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
)
-
SHAPE
(
type: esriFieldTypeGeometry, alias: SHAPE
)
-
SLOPETEST
(
type: esriFieldTypeString, alias: SLOPETEST, length: 20
)
-
SHAPE.STArea()
(
type: esriFieldTypeDouble, alias: SHAPE.STArea()
)
-
SHAPE.STLength()
(
type: esriFieldTypeDouble, alias: SHAPE.STLength()
)
Supported Operations:
Query
Query Attachments
Generate Renderer
Return Updates
Iteminfo
Thumbnail
Metadata