How to pass a function to julia Gadfly Theme parameter

Question

I make a plot like this:

plot(
  layer(x=sort(randn(1000),1), y=sort(randn(1000),1), Geom.point),
  layer(x=[-4,4], y=[-4,4], Geom.line(), Theme(default_colo         


        

Answer 1

For those like me trying to solve this problem more recently, I discovered that the best way to get rid of that pesky white ring is through the theme setting highlight_width=0pt

for example

plot(x=rand(10),y=rand(10),Theme(highlight_width=0pt))

I had some additional themes in the below image