南山K线

n:=3;
涨:ema(sum(c>ref(c,1),n)/n*100,n),colorred;
跌:ema(sum(c<ref(c,1),n)/n*100,n),colorgreen;
if(ref(max( 跌,10) ,1)< 跌 and 跌>80 ,30,0);
DRAWTEXT(跌>95 and 涨+跌=100, 跌,'买');
DRAWTEXT(涨>95 and 涨+跌=100, 涨,'卖');