Better plotting [skip CI]
Better plotting [skip CI]


Former-commit-id: 7979380dedf97e036ef17d184bbb02cd3535ec36 [formerly 51eef813db5b2e71b387ebceff8dae34100766f1]
Former-commit-id: ddf07aef69d16ca5a2ee81a508150f5a8e55ffba
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine