yAxis

The vertical scale.

Value type: Object

• start - (float) the mininum scale value
• end - (float) the maximum scale value
• step - (float) the scale step
• template - (string or function) the template for scale markers. By default, it is defined by the 'start', 'step' and 'end' attributes
• lineShape - ('line' and 'arc') the type of lines. By default, 'line'
• lineColor - (string) the color of scale arcs. By default, '#cfcfcf'

var chart =  new dhtmlXChart({
     yAxis:{
	lineShape:"arc"
     },
     ...
})