Andy Cotgreave is a visual analytics expert who has been with Tableau in various roles since 2011 ranging from product consultant to social content manager. He is now Tableau's Senior Technical Evangelist. Prior to Tableau, Andy was a data analyst at the University of Oxford. As a technical evangelist, he helps people see and understand their data using Tableau’s innovative products. Find out more about Andy here: http://about.me/acotgreave.