[EquisMetaStock Group] new code : the derivative of a function

[le corbeaux masque <lecorbeauxmasque7@xxxxxxxxx>]

this code gives an estimate of the first derivative
of the volatility

it is used to forcast tops&bottoms in the volatility
(crossing betwen the k6&k5 lines often provide
reliable tops/bottom of the volatility indicator)



q1:=Input("set lenght of bb's ma",1,99,20);
q2:=Input("set fma's lenght",1,99,22);
q3:=Input("set sma's lenght",1,99,44);
q4:=Input("set signal's lenght",1,99,9);
k0:=100*((BBandTop(mp(),q1,S,2)-BBandBot(mp(),q1,S,2))/(Mov(mp(),q1,S)));
k1:=Ref(k0,-1);
k2:=Ref(k0,-2);
k4:=((k2+k0)/2)-2*k1+k0;
k5:=(Mov(k4,q2,E)-Mov(k4,q3,E));
k6:=Mov(k5,q4,E);
k5;k6;

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