A27 Web Processing Service

A PyWPS implementation of the Web Processing Service for the A27 project.

Processes

The service exposes the following WPS 2.0 processes:

wps_get_locations

Retrieve A27 locations

Returns all A27 locations from the database as GeoJSON.

• Inputs: none
• Output: locations (application/json)
• Example:
  GET .../wps?service=WPS&request=Execute&version=1.0.0&identifier=wps_get_locations

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wps_get_peilfilter_data

Retrieve peilfilter timeseries data

Returns timeseries data for a selected peilfilter. Date range is optional; use empty strings for start_date and/or end_date to request all available data or only bound one side.

• Inputs:
  • peilfilterinfo (application/json):
    {"peilfilterid": <int>, "start_date": "<datetime or \"\">", "end_date": "<datetime or \"\">"}
• Output: peilfilter_data (application/json)
• Example:
  GET .../wps?service=wps&request=Execute&version=2.0.0&Identifier=wps_get_peilfilter_data&datainputs=peilfilterinfo={"peilfilterid":436, "start_date":"2013-06-01 00:00:00","end_date":"2013-12-31 23:59:59"}

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wps_get_depth_info

Retrieve depth info for selected peilfilters

Returns depth info (peilbuis top/bottom and filter top/bottom per peilfilter) for the given peilfilter IDs. Values are in m NAP (two decimal places).

• Inputs:
  • peilfilter_ids (application/json):
    {"peilfilter_ids": [<int>, <int>, ...]}
• Output: depth_info (application/json), e.g. {"peilbuis_top": <m>, "peilbuis_bottom": <m>, "filters": [{"peilfilter_id": <int>, "filter_top": <m>, "filter_bottom": <m>}, ...]}
• Example:
  GET .../wps?service=wps&request=Execute&version=2.0.0&Identifier=wps_get_depth_info&datainputs=peilfilter_ids={"peilfilter_ids":[2000,2001]}

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wps_get_precipitation_data

Retrieve precipitation timeseries for a location

Returns daily precipitation (mm/day) from the nearest KNMI station for the given coordinates. Coordinates are in WGS84 (EPSG:4326); the service uses RD New (EPSG:28992) internally. Date range is optional; empty strings use defaults or unbounded range.

• Inputs:
  • locationinfo (application/json):
    {"x": <lon>, "y": <lat>, "start_date": "<date or \"\">", "end_date": "<date or \"\">"}
• Output: precipitation_data (application/json), e.g. {"timeseries": [{"datetime": "...", "value": ...}, ...]}
• Example:
  GET .../wps?service=wps&request=Execute&version=2.0.0&Identifier=wps_get_precipitation_data&datainputs=locationinfo={"x":5.207047,"y":52.066449,"start_date":"","end_date":""}

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wps_get_precipitation_groundwater_data

Retrieve precipitation + groundwater timeseries (matched start/end)

Calls wps_get_peilfilter_data first to determine the groundwater min/max dates, then uses those dates to retrieve daily precipitation from the nearest KNMI station for the provided coordinates.

• Inputs:
  • peilfilterinfo (application/json):
    {"peilfilterid": <int>, "start_date": "<datetime or \"\">", "end_date": "<datetime or \"\">"}
  • locationinfo (application/json):
    {"x": <lon>, "y": <lat>}
• Output: precipitation_groundwater_data (application/json), e.g. {"precipitation": {"timeseries": [{"datetime": "...", "value": ...}, ...]}, "groundwater": {"timeseries": [{"datetime": "...", "value": ...}, ...]}}
• Example:
  GET .../wps?service=wps&request=Execute&version=2.0.0&Identifier=wps_get_precipitation_groundwater_data&datainputs=peilfilterinfo={"peilfilterid":436,"start_date":"","end_date":""},locationinfo={"x":5.207047,"y":52.066449}

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ultimate_question

Answer to the ultimate question

Demo process that returns the answer to “What is the meaning of life?”.

• Inputs: none
• Output: answer (literal string), value "42"
• Example:
  GET .../wps?service=wps&request=Execute&version=2.0.0&Identifier=ultimate_question

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Install command

conda create --name env_name -c conda-forge --file requirements.txt

Run service commands

conda activate env_name

python pywpws.wsgi

License of PyWPS

MIT