强势建仓同花顺副图，揭示主力进场、出场动向

来函数检测结果如下：
该公式没有未来函数

N1:=3;N2:=7;N3:=21;
LC:=REF(CLOSE,1);
RSI1:=SMA(MAX(CLOSE-LC,0),N1,1)/SMA(ABS(CLOSE-LC),N1,1)*100;
RSI2:=SMA(MAX(CLOSE-LC,0),N2,1)/SMA(ABS(CLOSE-LC),N2,1)*100;
RSI3:=SMA(MAX(CLOSE-LC,0),N3,1)/SMA(ABS(CLOSE-LC),N3,1)*100;
底部区域:20,colorgreen,LINETHICK2;
分界线:50,colorwhite,LINETHICK2;
风险区域:80,coloryellow,LINETHICK2;
ZB1:=RSI1<底部区域;
建仓:IF(CROSS(RSI1,底部区域) ,80,0),colorred,LINETHICK3;
DRAWICON(CROSS(RSI1,底部区域) ,30,11);
ZB2:=(ZB1=0 AND RSI1<=风险区域);
卖出:IF(ZB2=1 AND REF(ZB2,1)=0 AND 建仓=0,50,100),colormagenta,LINETHICK3;

原理解析：
N1赋值:3
N2赋值:7
N3赋值:21
LC赋值:1日前的收盘价
RSI1赋值:SMA(收盘价-LC和0较大值,N1,1)/SMA(收盘价-LC的绝对值,N1,1)*100
RSI2赋值:SMA(收盘价-LC和0较大值,N2,1)/SMA(收盘价-LC的绝对值,N2,1)*100
RSI3赋值:SMA(收盘价-LC和0较大值,N3,1)/SMA(收盘价-LC的绝对值,N3,1)*100
输出底部区域:20,画绿色, 线宽为2
输出分界线:50,画白色, 线宽为2
输出风险区域:80,画黄色, 线宽为2
ZB1赋值:RSI1<底部区域
输出建仓:IF(RSI1上穿底部区域 ,80,0),画红色, 线宽为3
DRAWICON(RSI1上穿底部区域 ,30,11)
ZB2赋值:(ZB1=0 AND RSI1<=风险区域)
输出卖出:IF(ZB2=1 AND 1日前的ZB2=0 AND 建仓=0,50,100),画洋红色, 线宽为3