Two RSI better then one. Also histogram shows difference of fast and slow RSI.
study(title="Relative Strength Index x2", shorttitle="RSIx2") src = close len_fast = input(14, minval=1, title="Length") len_slow = input(28, minval=1, title="Length") up_fast = rma(max(change(src), 0), len_fast) down_fast = rma(-min(change(src), 0), len_fast) rsi_fast = down_fast == 0 ? 100 : up_fast == 0 ? 0 : 100 - (100 / (1 + up_fast / down_fast)) up_slow = rma(max(change(src), 0), len_slow) down_slow = rma(-min(change(src), 0), len_slow) rsi_slow = down_slow == 0 ? 100 : up_slow == 0 ? 0 : 100 - (100 / (1 + up_slow / down_slow)) diff = rsi_fast - rsi_slow + 50 diff_color = diff > diff[1] ? green : red plot(diff, color=diff_color, style=columns, histbase=50, transp=80) plot(rsi_slow, color=gray) plot(rsi_fast, color=purple) band1 = hline(70) band0 = hline(30) fill(band1, band0, color=purple, transp=90)