通达信黑马红柱抄底指标（源码、副图/选股贴图）无未来函数
黑马红柱指标：是我作为抄底信号的参考指标之一，抄底信号就是需要耐心等，只要没破位就坚决握住。
{黑马红柱幅图}
昨收:=REF(CLOSE,1);
趋势:SMA(MAX(CLOSE-昨收,0),8,1)/SMA(ABS(CLOSE-昨收),8,1)*100,COLOR0080FF,LINETHICK2;
下:20,COLORCYAN;
上:80,COLORCYAN;
中:50,COLORMAGENTA;
DRAWTEXT(CROSS(80,趋势),83,'顶部'),COLORGREEN;
DRAWTEXT(CROSS(趋势,19),18,'底部'),COLORRED;
STICKLINE((CROSS(趋势,15)),50,20,8,0),COLORRED;
DRAWTEXT((CROSS(趋势,15)),45,'黑'),COLORYELLOW;
DRAWTEXT((CROSS(趋势,15)),35,'马'),COLORYELLOW;
