BTCVolume_AllExchgs_Avgd [LazyBear]

//
// @author LazyBear
// List of all my indicators:
// https://docs.google.com/document/d/15AGCufJZ8CIUvwFJ9W-IKns88gkWOKBCvByMEvm5MLo/edit?usp=sharing
//
study("BTCVolume_AllExchgs_Avgd [LazyBear]")
v1 = security("BTCE:BTCUSD", period, volume)
v2 = security("BITSTAMP:BTCUSD", period, volume)
v3 = security("BITFINEX:BTCUSD", period, volume)
v4 = security("HUOBI:BTCCNY", period, volume)
v5 = security("BTCCHINA:BTCCNY", period, volume)
includeOkCoin=input(false)
v6 = security("OKCOIN:BTCUSD", period, volume)
v = includeOkCoin ?  avg(v1, v2, v3, v4, v5, v6) : avg(v1, v2, v3, v4, v5)

b_color=(close>open ? green : red)

plot(v, style=histogram, color=b_color , linewidth=4)