2022 apidays LIVE Helsinki & North_Geospatial API’s
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The document discusses the development and usage of geospatial APIs by the National Land Survey of Finland, highlighting the importance of timeliness and integration with user systems. It outlines the historical progression of their APIs since 2004, the types of geospatial data available, and best practices for spatial data accessibility and interoperability. Additionally, it details various APIs for maps, spatial information, and real estate data, along with their functionalities.
2022 apidays LIVE Helsinki & North_Geospatial API’s
- 1. Building blocks to create, m odify, and query geospatial data on the Web Jari REINI National Land Survey of Finland Geospatial API’s
- 2. National Land Survey of Finland
- 3. SIVU 3 Drivers for API developm ent • NLS Finland’s data is extensive and constantly updated • Tim eliness is key for the user • The user needs the data as part of their own process, in their own inform ation system
- 4. NLS Finland API-history 1 2 3 First public API 2004 Versioning policy 2011 API principles 2019 4 Currently • In Production 29 API’s • In BETA 10 API’s Cadastral parcel inform ation Raster m aps 33 projects + m aintenance SIV U 4 WFS WMS
- 5. 2022 SERIES OF EVENT New York JULY (HYBRID) Australia SEPTEMBER (HYBRID) Singapore APRIL (VIRTUAL) Helsinki & North MARCH (VIRTUAL) Paris DECEMBER (HYBRID) London OCTOBER (HYBRID) Hong Kong AUGUST (VIRTUAL) JUNE (VIRTUAL) India MAY (VIRTUAL) APRIL (VIRTUAL) Dubai & Middle East JUNE (VIRTUAL) Check out our API Conferences here Wa nt t o t a lk a t one of our conference? Apply t o spea k here
- 6. Spatial Data on the Web Best Practices • Use globally unique persistent HTTP URIs for Spatial Things • Make your spatial data indexable by search engines • Use spatial data encodings that match your target audience • Expose spatial data through 'convenience APIs’ • Include spatial metadata in dataset metadata Complete list at w3.org 16.4.2022 5
- 7. 16.4.2022 https:/ / ogcapi.ogc.org/
- 8. Being FAIR Findable – Catalogs and m etadata Accessible – Protocol is open and standardized Interoperable – content encoding (GeoJSON, GML, HTML) Reusable – license inform ation, data product specifications 16.4.2022 7
- 9. OGC API’s • These standards build upon the legacy of the OGC Web Service standards (WMS, WFS, WCS, WPS, etc.) • These define resource-centric APIs that take advantage of m odern web developm ent practices • Standards are being constructed as "building blocks" 16.4.2022 8
- 10. 9 Data, Maps and Metadata …
- 11. 10 Processing, Coverages and Environm ental data
- 12. Create – Replace - Update - Delete • API also for changing item s/ features • Using HTTP m ethods, eg. • Create new HTTP POST • Replace HTTP PUT • Update HTTP PATCH • Delete HTTP DELETE 16.4.2022 11
- 13. 16.4.2022 12
- 14. NLS Finland – Open data • Topographic database • Raster m aps • Elevation m odels • Aerial photos • Laser scanning data • Geographic nam es • Addresses • Property boundaries and identifiers 13 16.4.2022
- 15. NLS Finland API’s Map API’s • Maps as background m aps for applications and for com bining with other data. Spatial data API’s • The data include, am ong other things, place nam es, roads, buildings, addresses, water bodies and other terrain patterns, elevation ratios and adm inistrative boundaries. Real estate inform ation API’s • Up-to-date real estate inform ation directly from the registers of the National Land Survey of Finland. Residential and Com m ercial Property Inform ation API’s • Up-to-date apartm ent inform ation 16.4.2022 14
- 16. Exam ples - Maps Topographic Map …/service/wms?SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&FORMAT=image /png&LAYERS=maastokartta&CRS=EPSG:3067&WIDTH=500&HEIGHT=500&BBOX=33 4250,6923440,366250,6955440 Input param eters, e.g. • Form at • Layer • Im age size 16.4.2022 15
- 17. Exam ples - spatial inform ation Find cem eteries from Finland …/terrain/features/v1/collections/cemetery Cultivated land from this region …/terrain/features/v1/collections/cultivated_land/items?limit=10000 &bbox=336981,6971749,339757,6976463 One building .../features/v1/collections/buildings/items?limit=1 16.4.2022 16
- 18. Exam ples - real estate Find property id’s from this region …features/v2/collections/KiinteistotunnuksenSijaintitied ot/items?bbox=116000,6654000,140000,6666000 Purchase price totals (€) by seller Properties bought by foreigners 16.4.2022 17
- 19. More inform ation at www.nls.fi 4/ 16/ 2022 18
- 20. Thank you! 16.4.2022 SIV U 19 @JariReini https:/ / www.linkedin.com / in/ reini/