!EDIT BY WENJINGL \,#;gS"  
!DATE 2015-1-15 p6&<eMwFA  
INPUT “PLEASE INPUT FREQUENCY”,flag1 ,/&|:PkS  
FRE = flag1 DOOF--ua  
INPUT “PLEASE INPUT MTF”,flag2 j`#H%2W\;  
MTF = flag2 ]Upr<!  
SETVECSIZE(1000) 5uV_Pkb?8  
GRAPHICS w3#0kl  
FORMAT 2.2 -qBdcbi|x)  
FLDX(1)=0 EQQ@nW{;  
FLDY(1)=MAXF() Zs8]A0$  
UPDATE 2f1Q&S  
GETMTF FRE,0,1,2,1,1 6z]y =J  
IF (VEC1(0)>=MTF) $)$_}^.k  
COLOR 2 4 !m'9  
ELSE 0oZZLi  
IF (VEC1(0)<MTF)THEN COLOR 4 T[<554  
IF (VEC1(0)<0.1)THEN COLOR 5 S$gLL kD1  
ENDIF +F.@n_}p-I  
GTEXT XMAX()/2-300,YMAX()/2+1500,0,VEC1(0) /|3~
LvIt=  
IF (VEC1(1)>=MTF) (b.4&P"0  
COLOR 2 J