大智慧前40天收盘价和前20天收盘价画线公式
n1:=20;n2:=40; DRAWLINE(CURRBARSCOUNT=TOTALBARSCOUNT,CONST(REF(C,n1)),CURRBARSCOUNT=1,REF(C,n1),3); DRAWLINE(CURRBARSCOUNT=TOTALBARSCOUNT,CONST(REF(C,n2)),CURRBARSCOUNT=1,REF(C,n2),3),coloryellow;
