顶部:cost(19*5),colorffff33;
卖出:cost(15*5),colorgreen;
买入:cost(6*5),colorred;
底部:cost(1*5),coloryellow;
aa1:=trough(3,10,1);
b:=troughbars(3,10,1)=1;
画底线:drawline(b,aa1,b,aa1,0),linethick1,colormagenta;
dd:=peak(3,10,1);
e:=peakbars(3,10,1)=1;
画顶线:drawline(e,dd,e,dd,0),linethick1,coloryellow;
