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Taking a tour of pygeoapi

At this point, you've installed pygeoapi, set configurations and started the server.

pygeoapi's default configuration comes setup with two simple vector datasets, a STAC collection and a sample process. Note that these resources are straightforward examples of pygeoapi's baseline functionality, designed to get the user up and running with as little barriers as possible.

Let's check things out. In your web browser, go to http://localhost:5000

Overview

All pygeoapi URLs have HTML and JSON representations. If you are working through a web browser, HTML is always returned as the default, whereas if you are working programmatically, JSON is always returned.

To explicitly ask for HTML or JSON, simply add f=html or f=json to any URL accordingly.

Each web page provides breadcrumbs for navigating up/down the server's data. In addition, the upper right of the UI always has JSON and JSON-LD links to provide you with the current page in JSON if desired.

Landing page

http://localhost:5000

The landing page provides a high level overview of the pygeoapi server (contact information, licensing), as well as specific sections to browse data, processes and geospatial files.

Collections

http://localhost:5000/collections

The collections page displays all the datasets available on the pygeoapi server with their title and abstract. Let's drill deeper into a given dataset.

Collection information

http://localhost:5000/collections/obs

Let's drill deeper into a given dataset. Here we can see the obs dataset is described along with related links (other related HTML pages, dataset download, etc.).

The 'View' section provides the default to start browsing the data.

The 'Queryables' section provides a link to the dataset's properties.

Vector data

Collection queryables

http://localhost:5000/collections/obs/queryables

The queryables endpoint provides the collection's queryable properties and associated datatypes.

Collection items

http://localhost:5000/collections/obs/items

This page displays a map and tabular view of the data. Features are clickable on the interactive map, allowing the user to drill into more information about the feature. The table also allows for drilling into a feature by clicking the link in a given table row.

Let's inspect the feature close to Toronto, Ontario, Canada.

Collection item

http://localhost:5000/collections/obs/items/297

This page provides an overview of the feature and its full set of properties, along with an interactive map.

ogcapi-features for more OGC API - Features request examples.

Raster data

Collection coverage domainset

This page provides information on a collection coverage spatial properties and axis information.

http://localhost:5000/collections/gdps-temperature/coverage/domainset

Collection coverage rangetype

This page provides information on a collection coverage rangetype (bands) information.

http://localhost:5000/collections/gdps-temperature/coverage/rangetype

Collection coverage data

This page provides a coverage in CoverageJSON format.

http://localhost:5000/collections/gdps-temperature/coverage

ogcapi-coverages for more OGC API - Coverages request exampless.

Tiles

A given collection or any data type can additionally be made available as tiles (map tiles, vector tiles, etc.). The following page provides an overview of a collection's tiles capabilities (tile matrix sets, URI templates, etc.)

http://localhost:5000/collections/lakes/tiles

URI templates

From the abovementioned page, we can find the URI template:

http://localhost:5000/collections/lakes/tiles/{tileMatrixSetId}/{tileMatrix}/{tileRow}/{tileCol}?f=mvt

Generic metadata

This page provides freeform tiles metadata.

http://localhost:5000/collections/lakes/tiles/WorldCRS84Quad/metadata

Metadata Records

http://localhost:5000/collections/metadata-records/items?q=crops&bbox=-142,42,-52,84

This page provides metadata catalogue search capabilities

ogcapi-records for more OGC API - Records request examples.

Processes

The processes page provides a list of process integrated onto the server, along with a name and description.

Expand with more info once OAProc HTML is better flushed out.

ogcapi-processes for more OGC API - Processes request examples.

Environmental data retrieval

http://localhost:5000/collections/edr-test

This page provides, in addition to a common collection description, specific link relations for EDR queries if the collection has an EDR capability, as well as supported parameter names to select.

http://localhost:5000/collections/edr-test/position?coords=POINT(111 13)&parameter-name=SST&f=json

This page executes a position query against a given parameter name, providing a response in CoverageJSON.

ogcapi-edr for more OGC API - EDR request examples.

SpatioTemporal Assets

http://localhost:5000/stac

This page provides a Web Accessible Folder view of raw geospatial data files. Users can navigate and click to browse directory contentsor inspect files. Clicking on a file will attempt to display the file's properties/metadata, as well as an interactive map with a footprint of the spatial extent of the file.

stac for more STAC request examples.

API Documentation

http://localhost:5000/openapi

http://localhost:5000/openapi?f=json

The API documentation links provide a Swagger page of the API as a tool for developers to provide example request/response/query capabilities. A JSON representation is also provided.

openapi

Conformance

http://localhost:5000/conformance

The conformance page provides a list of URLs corresponding to the OGC API conformance classes supported by the pygeoapi server. This information is typically useful for developers and client applications to discover what is supported by the server.