Proof of concept.This is an unofficial demo built by Datopian from the City of Newton's public data. The official portal is newton-open-geo-data-newtonmagis.hub.arcgis.com. Questions or feedback: hello@datopian.com

A PortalJS proof of concept · data from the City of Newton's ArcGIS Hub

Buildings

Building outlines for the City of Newton

Records
30,125
Formats
4
Last updated
Jul 1, 2013

Download & API

Buildings (CSV)csv
Spreadsheet — attributes, with coordinates for point layers
Download
Buildings (GeoParquet)geoparquet
Columnar — query with DuckDB / SQL
Download
Buildings (map tiles)pmtiles
Vector tiles — embed in a map
Download
Live ArcGIS layer (source)arcgis
Download

Rendered from PMTiles, queried in-browser from GeoParquet — no server. How this works

Schema

FieldTypeValues
SBL_IDstring
Namestring
Typestring
Ownershipstring6 values: Private (29,470), Institutional (336), Religious (102)…
Complexstring
Building_IDinteger0 to 427,100
Sourcestring10 values: BECO1991 (22,993), ORTHO (2,945), ASBUILT (2,856)…
Update_Datedatetime
Update_Typestring4 values: UPDATE (5,719), NEW (1,265), ADDITION (68)…
Update_Methodstring5 values: Photogrammetry (23,244), Ortho-Dig (2,876), Scan-Dig (2,295)…
LabelTextstring
AddressIDstring