Similar to the Dataton in Paris (
http://lists.pharo.org/pipermail/pharo-users_lists.pharo.org/2015-March/017444.html)
with data from Africa to visualize possible with Roassal there is in germany next friday (20.3.2015) a day in
Frankfurt organized by german railway, also with open data (timetables, train data, ...):
https://www.eventbrite.com/e/db-open-data-train-challenge-tickets-16026244930So if one might be interested to visit the event.
BTW: German railway is using Smalltalk applications a lot to do all their
timetable planning and train simulations (see
http://www.uic.org/html/it/e-business_2005/docs/woelfle.pdf for some screenshots)
Maybe this is a good chance to demo Pharo or use Roassal to visualize data.