在网上搜到一个有代码的,然后这边转了下你看看
Fast_ROC_period:=1;
Slow_ROC_period:=9;
MA_period:=5;
PDS:=10;
LongROC := 100.0 * (Close / ref(Close,Slow_ROC_period)-1);
ShortROC := 100.0 * (Close / ref(Close,Fast_ROC_period)-1);
X:=Sqrt(LongROC * LongROC + 100);
Y:=Sqrt(ShortROC * ShortROC+1) + PDS;
Z:= X/Y;
B:=if(close>ref(close,Slow_ROC_period),100*Z,-100*Z);
PFE:EMA(B,MA_PERIOD)