AFL Library

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Description:

RSI is an interesting transformation and may be applied
to any variable, not only internally supposed Close.
For this purpose we give here the analytic code for RSI.
To obtain an RSI transformation of another variable Var,
just replace C with Var.
Example:
To find the 14-day RSI of Stochd(14):
/*14-Day RSI of StochD(14)*/
t=14;
Var=Stochd(14);
Up=IIf(Var>Ref(Var,-1),abs(Var-Ref(Var,-1)),0);
Dn=IIf(Var<Ref(Var,-1),abs(Var-Ref(Var,-1)),0);
Ut=Wilders(Up,t);
Dt=Wilders(Dn,t);
RSIt=100*(Ut/(Ut+Dt));
Graph0=RSIt;
An interesting application is in
http://groups.yahoo.com/group/amibroker/message/7628
where the 14-day RSI of MACD() is introduced.

Formula:

/*RSI 12*/
t=12;
Up=IIf(C>Ref(C,-1),abs(C-Ref(C,-1)),0);
Dn=IIf(C<Ref(C,-1),abs(C-Ref(C,-1)),0);
Ut=Wilders(Up,t);
Dt=Wilders(Dn,t);
RSIt=100*(Ut/(Ut+Dt));
Graph0=RSIt;
 

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