Scruffy and bars

Ruby
1

Hi you all,

I’m working with Scruffy and bar graphs. Now, every bar appears over the
other(as in the Gruff image [1]). How can I do to make bars appears next
to the other in the same category (as in [2])?

[1] http://geoffreygrosenbach.com/system/assets/1144521884_normal.png
[2] http://geoffreygrosenbach.com/system/assets/1144521488_normal.png

Thanks.