按部就班指标 (源码)

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;