I see no support in kiva or chaco for scatter plots or markers in general. It seems that 'circle', 'dot' etc. are defined, but never used. In general, I'm not clear on how one defines new kinds of plots beyond the base line plots -- say I wanted to do a histogram, for example... What are the plans w.r.t such things, and how can I help? --david PS: In addition to the PIL backend I sent yesterday, I now have an SVG backend mostly ready, modulo a few nasty issues. Let me know if you're interested.