請問iac是指macd中的ac值嗎

 
double iAC( string symbol, int timeframe, int shift)
Calculates the Bill Williams' Accelerator/Decelerator oscillator.
Parameters:
symbol - Symbol name of the security on the data of which the indicator will be calculated. NULL means the current symbol.
timeframe - Timeframe. It can be any of Timeframe enumeration values. 0 means the current chart timeframe.
shift - Index of the value taken from the indicator buffer (shift relative to the current bar the given amount of periods ago).
Sample:
  double result=iAC(NULL, 0, 1);


英文有些看不懂,可否問一下 iac如何計算 iAC(NULL, 0, 1)會值回什麼值呢

原因: