Benjamin Webb
111 lines
3.0 KiB
ReStructuredText
111 lines
3.0 KiB
ReStructuredText
.. _ogcapi-edr:
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Publishing data to OGC API - Environmental Data Retrieval
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=========================================================
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The `OGC Environmental Data Retrieval (EDR) (API)`_ provides a family of
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lightweight query interfaces to access spatio-temporal data resources.
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To add spatio-temporal data to pygeoapi for EDR query interfaces, you
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can use the dataset example in :ref:`configuration` as a baseline and
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modify accordingly.
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Providers
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---------
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pygeoapi core EDR providers are listed below, along with a matrix of supported query
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parameters.
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.. csv-table::
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:header: Provider, coords, parameter-name, datetime
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:align: left
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`xarray-edr`_,✅,✅,✅
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Below are specific connection examples based on supported providers.
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Connection examples
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-------------------
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xarray-edr
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^^^^^^^^^^
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.. note::
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Requires Python package xarray
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The `xarray-edr`_ provider plugin reads and extracts `NetCDF`_ and `Zarr`_ data via `xarray`_.
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.. code-block:: yaml
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providers:
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- type: edr
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name: xarray-edr
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data: tests/data/coads_sst.nc
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# optionally specify x/y/time fields, else provider will attempt
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# to derive automagically
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x_field: lon
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y_field: lat
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time_field: time
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format:
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name: netcdf
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mimetype: application/x-netcdf
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providers:
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- type: edr
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name: xarray-edr
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data: tests/data/analysed_sst.zarr
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format:
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name: zarr
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mimetype: application/zip
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providers:
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- type: edr
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name: xarray-edr
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data: s3://power-analysis-ready-datastore/power_901_annual_meteorology_utc.zarr
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format:
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name: zarr
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mimetype: application/zip
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options:
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s3:
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anon: true
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requester_pays: false
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.. note::
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`Zarr`_ files are directories with files and subdirectories. Therefore
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a zip file is returned upon request for said format.
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.. note::
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When referencing data stored in an S3 bucket, be sure to provide the full
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S3 URL. Any parameters required to open the dataset using fsspec can be added
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to the config file under `options` and `s3`, as shown above.
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Data access examples
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--------------------
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* list all collections
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* http://localhost:5000/collections
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* overview of dataset
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* http://localhost:5000/collections/foo
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* dataset position query
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* http://localhost:5000/collections/foo/position?coords=POINT(-75%2045)
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* dataset position query for a specific parameter
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* http://localhost:5000/collections/foo/position?coords=POINT(-75%2045)¶meter-name=SST
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* dataset position query for a specific parameter and time step
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* http://localhost:5000/collections/foo/position?coords=POINT(-75%2045)¶meter-name=SST&datetime=2000-01-16
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.. _`xarray`: https://docs.xarray.dev/en/stable/
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.. _`NetCDF`: https://en.wikipedia.org/wiki/NetCDF
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.. _`Zarr`: https://zarr.readthedocs.io/en/stable
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.. _`OGC Environmental Data Retrieval (EDR) (API)`: https://github.com/opengeospatial/ogcapi-coverages
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