Here's a Trading System Idea

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Hello,

My Trading System Idea is the following -

- look to buy if the Bias is "BUY" and look to sell if the Bias is "SELL", pretty obvious, in general.

How to go about executing the buy/sell orders is a different story because the current story is about figuring out this aforementioned Bias.  How do I choose?  So, to move along I decided that I will use a Duration for which my bias shall be established and the bias itself will just be price-based, so essentially, a just-look-at-the-chart kind of research. 

More to the point, though...So, I take three durations: Monthly Duration, Weekly Duration, and Daily Duration and I want to open a chart with an indicator that just plots me a Label which says:

Monthly -BUY/SELL
Weekly - BUY/SELL
Daily - BUY/SELL

...now, how to decide the above? ...not to make it too hard, I just figured I'll use a 200 moving average for Trend, a 50 level in RSI for Impulse and the 0-line of the MACD for Drift.

...the logic is the following, I want price to be on the right side of Trend (right side is verified by Impulse above/below 50) and Drift in the direction of Trend (verified by the side MACD's on)

so I did the following...

//===================   
   PlotLabel(NULL,"MonthlyBias",0,17,17,1,"Month - "+MonthlyBias);
   PlotLabel(NULL,"WeeklyBias",0,17,34,1,"Week - "+WeeklyBias);
   PlotLabel(NULL,"DailyBias",0,17,51,1,"Day - "+DailyBias);  

...so the indicator plots the label calling out the bias for given Duration.

...the way in which Monthly/Weekly/Daily Bias is determined is,

...having declared Trend, Impulse, and Drift in the following way

//TREND
  string MonthlyTrend = DoubleToStr(iMA(NULL,PERIOD_H4,200,0,0,0,0));
  string WeeklyTrend = DoubleToStr(iMA(NULL,PERIOD_H1,200,0,0,0,0));
  string DailyTrend = DoubleToStr(iMA(NULL,PERIOD_M15,200,0,0,0,0));
//IMPULSE
  string MonthlyImpulse = DoubleToStr(iRSI(NULL,PERIOD_H4,20,0,0));
  string WeeklyImpulse = DoubleToStr(iRSI(NULL,PERIOD_H1,20,0,0));
  string DailyImpulse = DoubleToStr(iRSI(NULL,PERIOD_M15,20,0,0));
//DRIFT
  string MonthlyDrift = DoubleToStr(iMACD(NULL,PERIOD_H4,3,8,5,0,0,0));
  string WeeklyDrift = DoubleToStr(iMACD(NULL,PERIOD_H1,3,8,5,0,0,0));
  string DailyDrift = DoubleToStr(iMACD(NULL,PERIOD_M15,3,8,5,0,0,0));
//===============

I do this (weekly example)

if (string(price) > WeeklyTrend){
if ((WeeklyImpulse>=string(50)) && (WeeklyDrift>=string(0)))
   {WeeklyBias="BUY";}}
else if (string(price) < WeeklyTrend){
if ((WeeklyImpulse<=string(50)) && (WeeklyDrift<=string(0))) 
   {WeeklyBias="SELL";}}

and everything seems to work fine, except I feel its ugly coding and I want to improve it, what would you suggest

ps. here's the whole bias_label indicator

Files:
BiasLabel_-_Copy.mq4  6 kb
 

my question is mostly about suggestion re: usage of string( because even though I just want to plot a label in the end, perhaps calculation could be faster/better

..so, if I use doubles, is it better?

//TREND
  double MonthlyTrend = iMA(NULL,PERIOD_H4,200,0,0,0,0);
  double WeeklyTrend = iMA(NULL,PERIOD_H1,200,0,0,0,0);
  double DailyTrend = iMA(NULL,PERIOD_M15,200,0,0,0,0);
//IMPULSE
  double MonthlyImpulse = iRSI(NULL,PERIOD_H4,20,0,0);
  double WeeklyImpulse = iRSI(NULL,PERIOD_H1,20,0,0);
  double DailyImpulse = iRSI(NULL,PERIOD_M15,20,0,0);
//DRIFT
  double MonthlyDrift = iMACD(NULL,PERIOD_H4,3,8,5,0,0,0);
  double WeeklyDrift = iMACD(NULL,PERIOD_H1,3,8,5,0,0,0);
  double DailyDrift = iMACD(NULL,PERIOD_M15,3,8,5,0,0,0);
//===============
/**/
//=================    
if (price > WeeklyTrend){
if ((WeeklyImpulse>=50) && (WeeklyDrift>=0))
   {WeeklyBias="BUY";}}
else if (price < WeeklyTrend){
if ((WeeklyImpulse<=50) && (WeeklyDrift<=0)) 
   {WeeklyBias="SELL";}}
//==================
/**/
//===================   
   PlotLabel(NULL,"MonthlyBias",0,17,17,1,"Month - "+MonthlyBias);
   PlotLabel(NULL,"WeeklyBias",0,17,34,1,"Week - "+WeeklyBias);
   PlotLabel(NULL,"DailyBias",0,17,51,1,"Day - "+DailyBias);  
  return(0);
  }
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