Parent Layer: Buildings

Name: Buildings

Display Field: STRUCT_ID

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This dataset consists of 2-dimensional roof outlines ("roofprints") for all buildings larger than 150 square feet, as initially interpreted by a contractor (Rolta) for the whole area of the Commonwealth using DigitalGlobe ortho images obtained in 2011 and 2012, supplemented with LiDAR (Light Detection And Ranging) data collected from 2002 to 2011 for the eastern half of the state.</SPAN></P><P><SPAN>The roofprints as delivered by Rolta were enhanced by MassGIS using Normalized Digital Surface Models (NDSMs) derived from the same LiDAR data. Other layers were used, including the Standardized Parcels, to aid in review, especially where LiDAR data were not available.</SPAN></P><P><SPAN>In 2019, MassGIS refreshed the data to a baseline of 2016 and continues to update features using newer aerial imagery that allows MassGIS staff to remove, modify and add structures to keep up with more current ground conditions. Structures from the original compilation that are removed are stored in an "archive" feature class for edit tracking and historical purposes. Also in 2019, MassGIS replaced the polygons in Boston with data from the city. In March 2021, the layer was updated with 2017 and 2018 structure review edits along with the first data edits compiled atop spring 2019 imagery. Updates based on 2019 imagery were completed in July 2021. Updates based on 2019 imagery were completed in August 2022. Updates based on 2021 imagery were completed in October 2023. Updates based on 2023 imagery were completed in August 2024.</SPAN></P><P><SPAN STYLE="font-weight:bold;">Last updated on 10/25/2024.</SPAN></P><P><SPAN>In ArcSDE the layer is named STRUCTURES_POLY. It is updated periodically from STRUCTURES_POLY_V, which is registered as versioned for editing.</SPAN></P></DIV></DIV></DIV>

Copyright Text: Rolta, MassGIS, City of Boston

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 2400

Max Scale: 0

Supports Advanced Queries: false

Supports Statistics: false

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: -7996410.639487998
YMin: 5183730.550844505
XMax: -7984362.490762668
YMax: 5196601.899499124
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
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Color: [232, 228, 202, 255]
Outline:
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Labeling Info:

Advanced Query Capabilities:

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Supports TrueCurve: true
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Supports Query With Distance: true
Supports Sql Expression: false
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Supports Query With Current User: true

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HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• FID ( type: esriFieldTypeOID, alias: FID )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• STRUCT_ID ( type: esriFieldTypeString, alias: STRUCT_ID, length: 20 )
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Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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