编写条件：
老师你好： 求：股价轨迹在0轴之下金叉DEA时，注明一个标志，并编写一个选股公式。 DIFF : EMA(CLOSE,12) - EMA(CLOSE,26); DEA : EMA(DIFF,9); MACD : 2*(DIFF-DEA), COLORSTICK; D1:=EMA(C,3)-EMA(C,8); D2:=EMA(O,3)-EMA(O,8); D3:=EMA(H,3)-EMA(H,8); D4:=EMA(L,3)-EMA(L,8); A:=(D1+D2)/2; 股价轨迹:A,COLORGREEN,LINETHICK2;编写方法：
{选股}
DIFF := EMA(CLOSE,12) - EMA(CLOSE,26);
DEA :=EMA(DIFF,9);
D1:=EMA(C,3)-EMA(C,8);
D2:=EMA(O,3)-EMA(O,8);
A:=(D1+D2)/2;
crOSS(A, DEA);
{注明一个标志}
DIFF : EMA(CLOSE,12) - EMA(CLOSE,26);
DEA : EMA(DIFF,9);
macd : 2*(DIFF-DEA), COLORSTICK;
D1:=EMA(C,3)-EMA(C,8);
D2:=EMA(O,3)-EMA(O,8);
D3:=EMA(H,3)-EMA(H,8);
D4:=EMA(L,3)-EMA(L,8);
A:=(D1+D2)/2;
股价轨迹:A,COLORGREEN,LINETHICK2;
DRAWICON(CROSS(股价轨迹, DEA ) AND DEA<0,DEA,1 );
