DOMActivity (DmAct)

This is one of four pre-analytic studies that can be used with TFlow charts.

This study measures the amount of trader activity, including orders, modifies, and cancels, around the market. It is calculated as the amount of DOM changes for four ticks up and four ticks down from the best bid/ask.

The study begins calculating when you add it and will not display historical data. It is recalculated each time the TFlow bar updates until the next bar is created.

An enablement is required for this study.

DOMActivity Parameters

Parameter	Description
Display	Opens sub-window to set parameters • Color = Line color. • Weight = Line thickness. • Display = Line style: line or histogram. • MarkIt = Opens Specify Conditions window.
Weights	Enter values to weight the sum of the four bids or asks.
OB/OS	Opens sub-window with overbought and oversold parameters: • Color = Select a color for the line. • Weight = Choose a thickness for the indicator. • Type = Choose fixed or dynamic. Fixed = uses Level as a fixed OB/OS value. Dynamic = uses Standard Deviation and Lookback for a dynamic OB/OS value:. OB: MA(@,Sim,lookback) + factor * STDDEV(@,lookback) OS: MA(@,Sim,lookback) - factor * STDDEV(@,lookback) where @ is the study • Std Dev = Multiplier used to calculate high and low. • Lookback = Number of bars to compare to the current bar. • Level = Percentage of average OB/OS used to calculate predictor Ob/OS levels. • Display = Click this check box to display the component. • Style = Choose a line style.
Calculation Mode	Values: • Linear = uses the four bids and asks closest to best to calculate weighted sum (bids and asks 2, 3, 4, 5). • Market Adaptive = uses three bids and asks based on these rules: If the next bar’s middle is higher, then bids 3, 4, 5 and asks 2, 3, 4 are used. If the next bar’s middle is lower, then bids 2, 3, 4 and asks 3, 4, 5 are used. If the next bar’s middle is the same as the current bar, then bids 2, 3, 4, and asks 2, 3, 4 are used.
Volume Type	Values: • Actual • Ticks
Averaging Period	Enter a number, so that the study value is an average of that many of the last calculated values.