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=============
Luscious Lips
=============
---8<------------------------
{ Luscious Lips - the markets speak - v1.0 }
{ Lips/Ellipse bounded by High & Low
of selected period.}
{ Use red, plum or purple plot colors.}
{ ©Copyright 2005 Jose Silva }
{ For personal use only }
{ http://www.metastocktools.com }
{ User inputs }
pds1:=Input("Start periods ago",2,2600,70);
pds2:=Input("End periods ago",0,2600,5);
plot:=Input("[1]Ellipse, [2]Fill, [3]Both",
1,3,2);
{ Remove possible errors introduced
between keyboard & seat ;) }
p1:=LastValue(Max(pds1,pds2));
p2:=LastValue(Min(pds1,pds2));
p1:=If(p1<(p2+2),p2+2,p1);
{ Define/Restrict plot period }
start:=Cum(1)=LastValue(Cum(1))-p1;
end:=Cum(1)=LastValue(Cum(1))-p2;
restrict:=Ref(Ref(ValueWhen(1,start,1),-p2),p2);
{ Upper/Lower lip boundaries }
Hi:=LastValue(Highest(ValueWhen(1,restrict,H)))
+restrict-1;
Lo:=LastValue(Lowest(ValueWhen(1,restrict,L)))
+restrict-1;
{ Ellipse - with thanks to MG Ferreira }
midX:=(p1-p2)/2;
midY:=(Hi-Lo)/2;
tX:=Cum(1)-midX-(LastValue(Cum(1))-p1);
ellipse:=
Sqrt(midY*midY*(1-Min(tX*tX/midX/midX,1)));
upperE:=Lo+midY+ellipse;
lowerE:=Hi-midY-ellipse;
{ Eye candy }
even:=Cum(1)/2=Int(Cum(1)/2);
fill1:=If(even,upperE,lowerE);
fill2:=If(even,lowerE,upperE);
{ Plot in price chart }
If(plot=2,fill1,upperE);
If(plot=2,fill2,lowerE);
If(plot=1,upperE,fill1);
If(plot=1,lowerE,fill2)
---8<------------------------
jose '-)
http://www.metastocktools.com
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