The indicator analyzes the volume scale and divides it into two components – the volume of sellers and the volume of buyers, and also calculates the delta and cumulative delta.

The indicator does not flicker and does not redraw, it performs calculations and rendering fairly quickly, using data from the younger (relative to the current) periods.

The operating modes of the indicator are switched using the input variableMode:

• Buy – displays only the volume of buyers.
• Sell – displays only the volume of sellers.
• BuySell – displays the volumes of both buyers and sellers in two separate scales.
• Delta – the mode of the difference (delta) between the volumes of buyers and the volumes of sellers.
• CumDelta – cumulative delta mode.
• CumDeltaDaily – cumulative delta mode with the balance reset at the beginning of each day.
• CumDeltaWeekly – cumulative delta mode with the balance reset at the beginning of each week.
• DemandAndSupply – displays a supply and demand chart.

A complete recalculation of the data is carried out once a minute, at the moment when a new candle opens on the M1 timeframe, or when the user is active, namely, when scrolling the chart into history, when the time scale of the chart changes, or when the current period changes.

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By default, the starting point is the very first candle from the left border of the chart window. You can change the origin using the input variable BarsLimit.

If there is no data of any period necessary for calculations, the indicator displays the corresponding message.

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