Mats's talk was the fourth and final talk in the "Cartography / Visualisation" session at FOSS4G SotM Oceania 2019, organised by OSGeo Oceania and held at The National Library in Wellington, New Zealand from November 12-15 2019. FOSS4G SotM Oceania is the coming together of Oceania's geospatial open source and open data community - with four days of workshops, presentations, a community sprint and social events.