Code:
if(barindex>10) then
sRange = (high-low)
if(high<high[1] AND low<low[1]) then
CumVolVel = CumVolVel[1]-sRange*Volume
elsif(high>high[1] AND low>low[1]) then
CumVolVel = CumVolVel[1]+sRange*Volume
else
CumVolVel = CumVolVel[1]
endif
endif
avg = exponentialaverage[p](CumVolVel)
RETURN CumVolVel coloured(255,0,0) as "Cumulated volume", avg coloured(0,0,255) as "signal line"