Proof of concept.This is an unofficial demo built by Datopian from Roscommon County Council's public data. The official portal is data-roscoco.opendata.arcgis.com. Questions or feedback: hello@datopian.com

A PortalJS proof of concept · data from Roscommon County Council's ArcGIS Hub
Current portal

Habitat Survey 2010: Treelines

Habitat Survey 2010 Roscommon

Records
481
Formats
5
Last updated
5 Feb 2026
Download CSVView on ArcGIS Hub

Download & API

Habitat Survey 2010: Treelines (CSV)csv
Spreadsheet — attributes, with coordinates for point layers
Download
Habitat Survey 2010: Treelines (GeoJSON)geojson
GeoJSON — for web maps and GIS tools
Download
Habitat Survey 2010: Treelines (GeoParquet)geoparquet
Columnar — query with DuckDB / SQL
Download
Habitat Survey 2010: Treelines (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
Treelinesstring6 values: GEN_LIN_D (343), ROADS (13), WATER_FTR (13)…
SHAPE.STLength()
SHAPE_STLength__
number4 to 606