CVD divergence
Compare price swings against cumulative volume delta and mark divergences between the two.
This example pairs the chart with data.cvd and looks for the classic disagreement: price makes a new swing while cumulative volume delta refuses to confirm it. It covers a second data stream, reading a series at a historical offset, and anchored markers.
script "CVD Divergence"
data chart = subscribe(data.ohlcv)
data cvd = subscribe(data.cvd)
input pivotLen = input.int(8, title: "Pivot Strength", min: 2, max: 30)
pane cvdPane = pane(title: "CVD", height: 0.3)
plot cvdPlot = plot.line(title: "CVD", color: color.cyan, width: 2, on: cvdPane)
state (
markers = entities.markerPool(max: 24)
slot: int = 0
prevHighPrice: float? = null
prevHighCvd: float? = null
prevLowPrice: float? = null
prevLowCvd: float? = null
)
on chart.update {
cvdPlot.plot(cvd.close)
let now = (chart.time ?? time.fromUnixSeconds(0))
let pivotTime = now - time.bars(pivotLen)
// When a price pivot confirms, read the CVD value that printed on the
// same bar and compare the pair against the previous swing.
let pivotHigh = ta.pivotHigh(chart.high, pivotLen, pivotLen)
if pivotHigh != null {
let cvdAt = cvd.close[pivotLen]
let ready = prevHighPrice != null && cvdAt != null
let higherHigh = (pivotHigh ?? 0.0) > (prevHighPrice ?? 0.0)
let weakerCvd = (cvdAt ?? 0.0) < (prevHighCvd ?? 0.0)
if ready && higherHigh && weakerCvd {
// Higher high in price, lower high in CVD: buyers are thinning out.
slot = slot >= 23 ? 0 : slot + 1
markers.get("bear", slot).set(
x: pivotTime,
y: (pivotHigh ?? 0.0),
shape: shape.down,
color: color.red,
size: 11.0,
)
}
prevHighPrice = pivotHigh
prevHighCvd = cvdAt
}
let pivotLow = ta.pivotLow(chart.low, pivotLen, pivotLen)
if pivotLow != null {
let cvdAt = cvd.close[pivotLen]
let ready = prevLowPrice != null && cvdAt != null
let lowerLow = (pivotLow ?? 0.0) < (prevLowPrice ?? 0.0)
let strongerCvd = (cvdAt ?? 0.0) > (prevLowCvd ?? 0.0)
if ready && lowerLow && strongerCvd {
// Lower low in price, higher low in CVD: sellers are thinning out.
slot = slot >= 23 ? 0 : slot + 1
markers.get("bull", slot).set(
x: pivotTime,
y: (pivotLow ?? 0.0),
shape: shape.up,
color: color.green,
size: 11.0,
)
}
prevLowPrice = pivotLow
prevLowCvd = cvdAt
}
}Two streams, one clock
cvd.close inside the chart handler reads the CVD bar aligned with the current chart bar. Bracket indexing works across streams too: cvd.close[pivotLen] is the CVD value from the same bar as the price pivot being confirmed.
Compare swing pairs, not raw series
Divergence is a statement about consecutive swings. The script stores the previous pivot's price and CVD in state, and only signals when the new pair disagrees in direction: higher high in price with a lower high in delta, or the mirror image at lows.
Markers need entities here
plot.marker draws on the current bar, but a divergence confirms pivotLen bars after the swing it belongs to. A pooled marker with an explicit x: anchors the signal to the bar that earned it.