可以看到主力资金的的源码

IF(PERIODNAME<>"日线")
{
统计:"该指标只在日线周期下有效。";
RETURN;
}
r:=((ZDMR[-1]+BDMR[-1])-(ZDMC[-1]+BDMC[-1]))/SHGZG*100;
大单净量:r;
STICKLINE(r>0,0,r,8),color0000ff;
STICKLINE(r<0,0,r,8),color00ff00;
r0:=((IF(ISNULL(ZDMR[-1]),0,ZDMR)+IF(ISNULL(BDMR[-1]),0,BDMR))
        -(IF(ISNULL(ZDMC[-1]),0,ZDMC)+IF(ISNULL(BDMC[-1]),0,BDMC)))
                /SHGZG*100;
MA5:MA(r0,5);
MA10:MA(r0,10);
MA20:MA(r0,20);
RETURN r0;