as a filter for LRSI, Laguerre filter would be the best!
Code:
//+------------------------------------------------------------------+
//| LaguerreFilter.mq4 |
//| Copyright © 2006, Forex-TSD.com |
//| Written by IgorAD,igorad2003@yahoo.co.uk |
//| http://finance.groups.yahoo.com/group/TrendLaboratory |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2006, Forex-TSD.com "
#property link "http://www.forex-tsd.com/"
#property indicator_chart_window
#property indicator_color1 Yellow
//---- input parameters
extern double gamma = 0.7;
extern int Price_Type = 0;
//---- buffers
double Filter[];
double L0[];
double L1[];
double L2[];
double L3[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
IndicatorBuffers(5);
//---- indicators
SetIndexStyle(0, DRAW_LINE);
SetIndexDrawBegin(0, 1);
SetIndexLabel(0, "LaguerreFilter");
SetIndexBuffer(0, Filter);
SetIndexBuffer(1, L0);
SetIndexBuffer(2, L1);
SetIndexBuffer(3, L2);
SetIndexBuffer(4, L3);
//----
string short_name="LaguerreFilter(" + DoubleToStr(gamma, 2) + ")";
IndicatorShortName(short_name);
return(0);
}
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{
int limit;
int counted_bars = IndicatorCounted();
double CU, CD;
//---- last counted bar will be recounted
if (counted_bars>0)
counted_bars--;
else
counted_bars = 1;
limit = Bars - counted_bars;
//---- computations for RSI
for (int i=limit; i>=0; i--)
{
double Price=iMA(NULL,0,1,0,0,Price_Type,i);
L0[i] = (1.0 - gamma)*Price + gamma*L0[i+1];
L1[i] = -gamma*L0[i] + L0[i+1] + gamma*L1[i+1];
L2[i] = -gamma*L1[i] + L1[i+1] + gamma*L2[i+1];
L3[i] = -gamma*L2[i] + L2[i+1] + gamma*L3[i+1];
CU = 0;
CD = 0;
if (L0[i] >= L1[i])
CU = L0[i] - L1[i];
else
CD = L1[i] - L0[i];
if (L1[i] >= L2[i])
CU = CU + L1[i] - L2[i];
else
CD = CD + L2[i] - L1[i];
if (L2[i] >= L3[i])
CU = CU + L2[i] - L3[i];
else
CD = CD + L3[i] - L2[i];
if (CU + CD != 0)
Filter[i] = (L0[i] + 2 * L1[i] + 2 * L2[i] + L3[i]) / 6.0;
}
return(0);
}
//+------------------------------------------------------------------+
i give a fast try by modifying the Laguerre RSI EA (ema filter) above, to filter base on Laguerre.. iCustom(NULL,0,"Laguerre Filter",gamma,0,i) it gives better result than with MA filter ..