奇思妙想出一个《爬山图》，供大家欣赏（有图有代码）
L1:=LLV(C,40);
L2:=LLV(C,13);
L3:=LLV(C,8);
L4:=LLV(C,3);
M20:=MA(C,10);
ZF:=C/REF(C,1);
A1:=SUM((L1+L4*M20*ZF),5);
A2:=SUM((L1+L3*M20*ZF),5);
A3:=SUM((L1+L2*M20*ZF),5);
A4:=SUM((L1+L1*M20*ZF),5);
DRAWBAND(A1,255,A2,0);
DRAWBAND(A2,90,A3,0);
DRAWBAND(A3,RGB(34,139,34),A4,0);
