Disapply Pattern
This sample is to show how to apply patterns for visually impaired users.
As visually impaired users hardly recognize colors,    
the density of dots in the line helps visually impaired users understand the chart data.

ā—¸Layout
<Line2DSeries yField="Profit" form="segment" lineStyle="dashLine" dashLinePattern="2"
itemRenderer="RectangleItemRenderer" radius="6" displayName="Profit"/>

<Line2DSeries yField="Cost" form="segment" lineStyle="dashLine" dashLinePattern="7" 
itemRenderer="CircleItemRenderer" radius="6" displayName="Cost"/>

<Line2DSeries yField="Revenue" form="segment" lineStyle="dashLine" dashLinePattern="15" 
itemRenderer="DiamondItemRenderer" radius="6" displayName="Revenue"/>