FinanceChart.addVolBars

addVolBars(height, upColor, downColor, flatColor)

Adds a volume bar chart layer on the main chart.

Argument	Default	Description
height	(Mandatory)	The height of the bar chart layer in pixels.
upColor	(Mandatory)	The color to used on an 'up' day. An 'up' day is a day where the closing price is higher than that of the previous day.
downColor	(Mandatory)	The color to used on a 'down' day. A 'down' day is a day where the closing price is lower than that of the previous day.
flatColor	(Mandatory)	The color to used on a 'flat' day. A 'flat' day is a day where the closing price is the same as that of the previous day.

A BarLayer object representing the bar layer created.