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A volume delta chart type provides price and volume activity together on one data point over a specified time frame. It allows traders to see "within" the price bar to provide more transparency over a traditional chart.
A bar is divided to equal parts based on minimum price level, depends on Price Scale * Min. Movement [[Setting Properties|settings of increments for the symbol]] in QuoteManager. Each box shows traded ask and bid volume in three different options: ask x bid values, their sum or their delta.
There are 2 base colors: red and green. A box is green if delta of ask and bid volume is positive. A box is red if delta of ask and bid is negative. All boxes within 1 bar are not the same in terms of color. The darker is a red box, the lower is its delta value. The darker is a green box, the higher is its delta value. All boxes between these extreme ones are colored respectively.
