Summary This indicator shows Bollinger bands with plus/minus 3σ bands and lagging span(called chikou span in Japanese as used in Ichimoku cloud) showing alert when lagging span crossing plus/minus 2σ bands, which are buy/sell signal respectively.
Bollinger bands are one of frequently used technical analysis indicators in trading and some traders use Bollinger bands and lagging span together in order to identify trading opportunities. When lagging span crosses upper bands in bullish trend and lower bands in bearish trend, that would be considered buying/selling opportunities respectively. Generally, lagging span is used offsetting current price by 26 period. This indicator shows signal and alerts when lagging span crossing ±2σ bands as potential trading opportunities.
Functions -To show Bollinger bands with plus/minus 3 sigma bands -To show SMA as Bollinger bands middle line with configurable period of SMA. -To show lagging span, enabling users to set lagging period and control display of lagging span by checkbox -To show signal on chart when lagging span crosses +2σ bands and -2σ band with ability to set alert -To control display of the signal by checkbox