Ease of Movement (EOM) — Indicator by HPotter

This indicator gauges the magnitude of price and volume movement.
The indicator returns both positive and negative values where a
positive value means the market has moved up from yesterday's value
and a negative value means the market has moved down. A large positive
or large negative value indicates a large move in price and/or lighter
volume. A small positive or small negative value indicates a small move
in price and/or heavier volume.
A positive or negative numeric value. A positive value means the market
has moved up from yesterday's value, whereas, a negative value means the
market has moved down.

Open-source script

In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.

Disclaimer

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//  Copyright by HPotter v1.0 05/06/2014
// This indicator gauges the magnitude of price and volume movement. 
// The indicator returns both positive and negative values where a 
// positive value means the market has moved up from yesterday's value 
// and a negative value means the market has moved down. A large positive 
// or large negative value indicates a large move in price and/or lighter 
// volume. A small positive or small negative value indicates a small move 
// in price and/or heavier volume.
// A positive or negative numeric value. A positive value means the market 
// has moved up from yesterday's value, whereas, a negative value means the 
// market has moved down. 
////////////////////////////////////////////////////////////
study(title="Ease of Movement (EOM)", shorttitle="EOM")
hline(0, color=blue, linestyle=line)
xHigh = high
xLow = low
xVolume = volume
xHalfRange = (xHigh - xLow) * 0.5
xMidpointMove = mom(xHalfRange, 1)
xBoxRatio = iff((xHigh - xLow) != 0, xVolume / (xHigh - xLow), 0)
nRes = iff(xBoxRatio != 0, 1000000 * ((xMidpointMove - xMidpointMove[1]) / xBoxRatio), 0)
plot(nRes, color=red, title="EOM", style=histogram, linewidth=2)