Geospatial Data

ArcGIS Platform

Raul Jimenez | Esri

Find me as @hhkaos at:

slides.com/hhkaos/geospatial-data

Consume geospatial data

3rd-party data sources

Different data providers and data services

Living Atlas of the World

PetaBytes of geospatial data from authoritative data providers

Data services distribution by category

Data services distribution by service type

Living Atlas of the World (LAW) is a subset of data available in the ArcGIS Platform

Demo: LAW quick overview

You can browse it through livingatlas.arcgis.com or the "LAW Search" group in arcgis.com.

Tile layers

Service type: Tile Map Service (x, y, z), Web Map Tile Service (WMTS) & Esri Tile Layers | Data type: raster or vector

The method of tile indexing used by the major online map providers.

Folders in HD with raster tiles
Entire world can take ~20 TB (raster) vs ~13 GB (vector)

Principle of vector tiling

Main purpose: provide context to data & technical performance: storage and load times.

Example: basemaps (satellite, roads, ...), aerial pictures, large data, ...

Demo: filter Tile Layers in the Living Atlas

Tile Layers distribution by category

Note: Tile layers are ~12% of the content in the Living Atlas

URL: https://bit.ly/TCTileLayers

Feature layers

For spatial raw vector data. Similar to GeoJSON, KML, GPX ... but it is managed through a REST API.
Esri Hosted Feature Layers are optimized, supporting: data tiling, caching, protocol buffers, cartographic generalization, http2, CDNs, and more.

Service type: Esri Feature Layers, Web Feature Service (WFS) | Data type: vector (alphanumberic + shape/geometry)

Main purpose: access, query, ~~and edit~~ raw data interactively

Example: buildings, POIs, roads, live alerts, boundaries, ...

Geometry as GeoJSON

Each shape/geometry (point, line or polygon) as a tuple associated with it

Demo: filter Feature Layers in the Living Atlas

Feature Layers distribution by category

Note: Feature layers are ~66% of the content in the Living Atlas

URL: https://bit.ly/TCFeatureLayers

Live Feeds Status: livingatlas.arcgis.com/livefeeds-status/

Map Image Layers

Service type: Map Service, Web Map Service (WMS)| Data type: can include both feature and non-feature layers as sublayers

Main purpose: combine the best of raster and vector in a single service

Example: interactive large datasets: demographics by county, large water or traffic models, ...

World Traffic Service - Serving road congestion as a dynamic image and traffic incidents as a queryable layer

Imagery Layers

Service type: Esri dynamic imagery layers (a.k.a. raster layers), Web Coverage Service (WCS) | Data type: raster

Raster Layer - Export image - Time Animation

Main purpose: process and analyze large continuous space/time-varying data.

Example: weather data, land cover, vegetation index, elevation data, slopes, ...

Raster Layer - Client Side raw data filtering

URL: https://bit.ly/TCImageryLayer

Disclaimer

Remember, we have reviewed the four most common data types of services, but ArcGIS Platform supports many more (scene services, stream service, KML services, geodata services, etc.).
Living Atlas data layers access considerations:
- Default layers (~5900): free to access and use (no login required).
- Subscription layers (~1000): free to access and use (login required).
- Premium layers (~500): paid pers use (demographic layers mainly).
Not all data can be downloaded, read Deployment > Content and data.