Refined plotting [skip CI]
Refined plotting [skip CI]


Former-commit-id: f126e69c525cab02a643680c63cbe2d54afec101 [formerly 2bd0440b31abf3b927f60346064746b2d6b522b3]
Former-commit-id: 34c13e49fbf5b36b9991f980a55a1993489378e1
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine