//@version=4
study("Mansfield Relative Strength", overlay=false)
zeroline = plot(0, color=#FFFFFF)
target_period = timeframe.period
index =
(syminfo.prefix == "NASDAQ") ? security("NASDAQ:IXIC", "D", close) :
(syminfo.prefix == "NYSE") ? security("NYSE:NYA", "D", close) :
(syminfo.prefix == "AMEX") ? security("NYSE:XMI", "D", close) :
(syminfo.prefix == "BITSTAMP") ? security("BITSTAMP:BTCUSD", "D", close) :
(syminfo.prefix == "BITTREX") ? security("COINBASE:BTCUSD", "D", close) :
(syminfo.prefix == "BINANCE") ? security("COINBASE:BTCUSD", "D", close) :
(syminfo.prefix == "KRAKEN") ? security("COINBASE:BTCUSD", "D", close) :
(syminfo.prefix == "BITFINEX") ? security("COINBASE:BTCUSD", "D", close) :
(syminfo.prefix == "COINBASE") ? security("COINBASE:BTCUSD", "D", close) : na
rsd = (close / index) * 100
rsm = (rsd/sma(rsd, 50) - 1) * 100
plot(rsm)
// plot(hline(0))