请老师帮忙改一个通达信选股公式，改成写成“指标王a上穿趋势线”的选股公式。谢谢_通达信趋势线指标公式

推荐回答：

指标王a:=(ema(ema(((high+low+close*2)/4-ema((high+low+close*2)/4,7))*100/std((high+low+close*2)/4,7),3),5+100))/2-3;指标王:=sum((close-ref(close,1))*sum(vol,2)/(((hhv(high,2)-llv(low,2)))*100),0);趋势线:=ma((sma(指标王,9,1)-sma(指标王,19,1))*0.01,10);xg:cross(指标王a,趋势线);