The Cartagena Data Festival will be taking place in Colombia from 20-22 April.

It's jointly organised by a number of groups, including ODI, Africa Gathering, CEPEI, Data-Pop Alliance, PARIS21, UNDP and UNFPA. The key objective: to solve critical gaps in coverage, access and analysis of data, thereby contributing to the global effort to drive progress in the post-2015 agenda.

The On Think Tanks Data Visualisation Competition will be launching this year's compilation at the event and will also be participating in a number of ways. The event has an evening celebration of data art and its own competition hosted by HDRO, with winning visualisation projected on the old castle walls of Cartagena.

You can still register to watch online via their website.