A GeoRSS client library for the Natural Resources Canada Earthquakes feed.
This library provides convenient access to the Natural Resources Canada Earthquakes Feed.
pip install georss-nrcan-earthquakes-client
See below for an example of how this library can be used. After instantiating
the feed class and supplying the required parameters, you can call
retrieve the feed data. The return value will be a tuple of a status code and
the actual data in the form of a list of specific feed entries.
- UPDATE_OK: Update went fine and data was retrieved. The library may still return empty data, for example because no entries fulfilled the filter criteria.
- UPDATE_OK_NO_DATA: Update went fine but no data was retrieved, for example because the server indicated that there was not update since the last request.
- UPDATE_ERROR: Something went wrong during the update
||Radius in kilometers around the home coordinates in which events from the feed are included.|
||Minimum magnitude as float value. Only events with a magnitude equal or above this value are included.|
from georss_nrcan_earthquakes_client import NaturalResourcesCanadaEarthquakesFeed # Home Coordinates: Latitude: 49.25, Longitude: -123.1 # Language: English # Filter radius: 200 km # Filter minimum magnitude: 4.0 feed = NaturalResourcesCanadaEarthquakesFeed((49.25, -123.1), 'en', filter_radius=200, filter_minimum_magnitude=4.0) status, entries = feed.update()
The Feed Manager helps managing feed updates over time, by notifying the consumer of the feed about new feed entries, updates and removed entries compared to the last feed update.
- If the current feed update is the first one, then all feed entries will be reported as new. The feed manager will keep track of all feed entries' external IDs that it has successfully processed.
- If the current feed update is not the first one, then the feed manager will
produce three sets:
- Feed entries that were not in the previous feed update but are in the current feed update will be reported as new.
- Feed entries that were in the previous feed update and are still in the current feed update will be reported as to be updated.
- Feed entries that were in the previous feed update but are not in the current feed update will be reported to be removed.
- If the current update fails, then all feed entries processed in the previous feed update will be reported to be removed.
After a successful update from the feed, the feed manager will provide two different dates:
last_updatewill be the timestamp of the last successful update from the feed. This date may be useful if the consumer of this library wants to treat intermittent errors from feed updates differently.
last_timestampwill be the latest timestamp extracted from the feed data. This requires that the underlying feed data actually contains a suitable date. This date may be useful if the consumer of this library wants to process feed entries differently if they haven't actually been updated.
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