 
 
 
-xdr = Collections('Range1d').create({start: 0, end: 100})
-ydr = Collections('Range1d').create({start: 0, end: 100})
+xdr = Collections('Range1d').create({start: 0, end: 500})
+ydr = Collections('Range1d').create({start: 0, end: 500})
 
 circle_slow = {
   x: 'x'


r = new Rand(123456789)

x = (r.randf()*100 for i in _.range(4000))
y = (r.randf()*100 for i in _.range(4000))
radii = (r.randf()+0.5 for i in _.range(4000))
colors = ("rgb(#{ Math.floor(50+2*val[0]) }, #{ Math.floor(30+2*val[1]) }, 150)" for val in zip(x, y))
source = Collections('ColumnDataSource').create(
  data:
    x: x

    fill: colors
)

xdr = Collections('Range1d').create({start: 0, end: 500})
ydr = Collections('Range1d').create({start: 0, end: 500})

circle_fast = {
  x: 'x'
