CCI_Histogram_Vol indicator with additional averaging of the resulting histogram. A similar averaging is applied to dynamic overbought/oversold levels as well.

//+-----------------------------------------+  //|  INDICATOR INPUT PARAMETERS             |  //+-----------------------------------------+  input uint                CCIPeriod=14;             // indicator period  input ENUM_APPLIED_PRICE  CCIPrice=PRICE_CLOSE;     // price  input ENUM_APPLIED_VOLUME VolumeType=VOLUME_TICK;   // volume   input int                 HighLevel2=+100;          // overbought level 2  input int                 HighLevel1=+80;           // overbought level 1  input int                 LowLevel1=-80;            // oversold level 1  input int                 LowLevel2=-100;           // oversold level 2  input Smooth_Method       MA_SMethod=MODE_SMA_;     // Averaging method  input uint                MA_Length=12;             // Smoothing depth                      input int                 MA_Phase=15;              // parameter of the first smoothing,  //---- for JJMA within the range of -100 ... +100, it influences the quality of the transition process;  //---- for VIDIA it is a CMO period, for AMA it is a slow average period  input int                 Shift=0;                  // Horizontal indicator shift in bars  

The indicator uses SmoothAlgorithms.mqh library classes (copy it to <terminal_data_folder>\MQL5\Include). The use of the classes was thoroughly described in the article "Averaging Price Series for Intermediate Calculations Without Using Additional Buffers".

Fig. 1. XCCI_Histogram_Vol