Oops. Last line's title should be "Sell". Doesn't affect display though.
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.
//Created by Robert Nance 060915 //This little script simply gives you a quick visual cue of where price is compared to a particular EMA. // It is defaulted to the 8 EMA study(title="Price above/below EMA", shorttitle="BuySellEMA", overlay=false) len = input(8, minval=1, title="Length") src = input(close, title="Source") out = ema(src, len) plot(close >= out, title="Buy", style=columns, color=lime) plot(close < out, title="Buy", style=columns, color=red)