Keltner Channel built relative to the average value of the XCCX oscillator as a sequence of candlesticks. The indicator uses SmoothAlgorithms.mqh library classes (copy it to <terminal_data_folder>\MQL5\Include). The use of the classes was described in detail in the ...
from https://tradingrobots.net/xccxcandlekeltner-indicator-for-metatrader-5/