公式介绍和使用：
RSI做震荡行情很不错的公式，只在超买80以上和超卖20以下操作。
SJ:1;
超买:80*SJ,COLORRED,POINTDOT;
超卖:20*SJ,COLOR00FF00,POINTDOT;
LC :=REF(CLOSE,1);
RSI1:SMA(MAX(CLOSE-LC,0)*SJ,7,1)/SMA(ABS(CLOSE-LC),7,1)*100;
RSI2:SMA(MAX(CLOSE-LC,0)*SJ,14,1)/SMA(ABS(CLOSE-LC),14,1)*100;
IF(RSI1<=REF(RSI1,1),RSI1,DRAWNULL),LINETHICK2,COLORGREEN;
IF(RSI1>=REF(RSI1,1),RSI1,DRAWNULL),LINETHICK2,COLORRED;
IF(RSI2<=REF(RSI2,1),RSI2,DRAWNULL),LINETHICK2,COLORGREEN;
IF(RSI2>=REF(RSI2,1),RSI2,DRAWNULL),LINETHICK2,COLORRED;
