who is the person how painted the picture screm?

Question: who is the person how painted the picture screm?
- Keywords:
  art,
  lifestyle,
  painting
Asked by anon-19384 to Martin on 14 Mar 2012.
- Martin Zaltz Austwick answered on 14 Mar 2012:
  
  The background to my photo? I did that myself! It shows the most popular journeys for cyclists of hire bikes (“Boris Bike”), and the colour tells you how fast cyclists are (red is faster than blue). So it’s data as well as art!

Question: who is the person how painted the picture screm?