Line chart: yDomain = [0,2,200], yRange = [500,50,0]
Historical bar chart: yDomain = [0,2,130], yRange = [500,50,0]
The chart.yRange() and chart.xRange() properties are an advanced feature. They are useful
in situations where your data has wild extremes: ie, you have lots of smaller numbers, and lots of really big
Without a polylinear scale, those really big data points will overwhelm the small points.
Please look at the examples to understand how polylinear scales work. Comment/uncomment the lines that alter
yDomain and yRange
to see the effect it has on the charts.