缠中说禅趋势主图，源码分享

SHORT:=7;

LONG:=19;

T:=PERIOD;

D:=IF(T=0,30,IF(T=1,25,IF(T=8,25,IF(T=2,20,IF(T=3,20,IF(T=4,20,IF(T=5,10,IF(T=6,10,IF(T=7,10,IF(T=9,10,IF(T=10,10,10)))))))))));

RMA:EMA(CLOSE,SHORT),COLORLIGRAY;

NMA:EMA(CLOSE,LONG),COLORMAGENTA;

RISK:IF(NMA>RMA,NMA,DRAWNULL),COLORGREEN;

UP:DRAWLINE(L=LLV(L,BARSLAST(CROSS(NMA,RMA))+1) AND L=LLV(L,D)  AND RMA<=NMA,L,H=HHV(H,BARSLAST(CROSS(RMA,NMA))+1) AND H=HHV(H,D)  AND RMA>=NMA,H,0),COLOR0000FF,LINETHICK2;

DOWN:DRAWLINE(H=HHV(H,BARSLAST(CROSS(RMA,NMA))+1) AND H=HHV(H,D)  AND RMA>=NMA,H,L=LLV(L,BARSLAST(CROSS(NMA,RMA))+1) AND L=LLV(L,D)  AND RMA<=NMA,L,0),COLOR00FF00,LINETHICK2;

UH:HHV(H,55),COLORBROWN;

MID:(HHV(H,55)+LLV(L,55))/2,COLORBROWN;

DL:LLV(L,55),COLORBROWN;