Cumulative Volume Delta

[yuhandyman]

Is anyone can share or assist me with cumulative volume delta scripts?
?
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vars:
price( Close ),
filter( 0 ),
smooth( 0 );

// Calculate delta values
vars:
bidVolume(0),
askVolume(0),
delta(0),
cumulativeDelta(0);

bidVolume = GetBidVolume;
askVolume = GetAskVolume;

delta = bidVolume - askVolume;
if (filter > 0) {
delta = XAverage(delta, filter);
}
if (smooth > 0) {
delta = XAverage(delta, smooth);
}
cumulativeDelta = cumulativeDelta[1] + delta;

// Plot cumulative delta values
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