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Simplify polygons before storing them

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We’re going to let people pass in fairly complex polygons, but:
- we don’t want to store massive polygons
- we don’t want to pass the CBCs massive polygons

So this commit adds a step to simplify the polygons before storing them.

We think it’s best for us to do this because:
- writing code to do polygon simplification is non-trivial, and we don’t
  want to make all potential integrators do it
- the simplification we’ve developed is domain-specific to emergency
  alerting, so should throw away less information than

There’s a bit more detail about how we simplify polygons in
https://github.com/alphagov/notifications-admin/pull/3590/files
This commit is contained in:
Chris Hill-Scott
2021-01-26 16:24:45 +00:00
parent 26871eeacc
commit c9d55039eb
4 changed files with 39 additions and 18 deletions
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requirements-app.txt
+1 -1
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@@ -31,7 +31,7 @@ notifications-python-client==5.7.1
# PaaS
awscli-cwlogs==1.4.6
git+https://github.com/alphagov/notifications-utils.git@43.5.9#egg=notifications-utils==43.5.9
git+https://github.com/alphagov/notifications-utils.git@43.8.0#egg=notifications-utils==43.8.0
# gds-metrics requires prometheseus 0.2.0, override that requirement as 0.7.1 brings significant performance gains
prometheus-client==0.9.0