Incorrect formatting of vaiables in Print() & SendMail() function
double standardDeviation; // uninitialized double int OnInit() { string x = standardDev(); ⋮ string standardDev(){ string strStandardDev = StringFormat("The Standard Deviation is %0.0f", standardDeviation); // Using the uninitialized double.
You never call any other code. Variable has garbage.
Don't try to use any price (or indicator) or server related functions in OnInit (or on load or in OnTimer before you've received a tick), as there may be no connection/chart yet:- Terminal starts.
- Indicators/EAs are loaded. Static and globally declared variables are initialized. (Do not depend on a specific order.)
- OnInit is called.
- For indicators OnCalculate is called with any existing history.
- Human may have to enter password, connection to server begins.
- New history is received, OnCalculate called again.
- A new tick is received, OnCalculate/OnTick is called. Now TickValue, TimeCurrent, account information and prices are valid.
You never call any other code. Variable has garbage.
Don't try to use any price (or indicator) or server related functions in OnInit (or on load or in OnTimer before you've received a tick), as there may be no connection/chart yet:- Terminal starts.
- Indicators/EAs are loaded. Static and globally declared variables are initialized. (Do not depend on a specific order.)
- OnInit is called.
- For indicators OnCalculate is called with any existing history.
- Human may have to enter password, connection to server begins.
- New history is received, OnCalculate called again.
- A new tick is received, OnCalculate/OnTick is called. Now TickValue, TimeCurrent, account information and prices are valid.
Yes, the actual EA does not use any price related or server related functions in OnInit(), this is purely just for test purposes. This showing a 0 result on the OnTick() function once server connection and price data have been established.
You never call any other code. Variable has garbage.
Don't try to use any price (or indicator) or server related functions in OnInit (or on load or in OnTimer before you've received a tick), as there may be no connection/chart yet:- Terminal starts.
- Indicators/EAs are loaded. Static and globally declared variables are initialized. (Do not depend on a specific order.)
- OnInit is called.
- For indicators OnCalculate is called with any existing history.
- Human may have to enter password, connection to server begins.
- New history is received, OnCalculate called again.
- A new tick is received, OnCalculate/OnTick is called. Now TickValue, TimeCurrent, account information and prices are valid.
But I do call the code, I called the function via the:\
string x = standardDev();
Yes, the actual EA does not use any price related or server related functions in OnInit(), this is purely just for test purposes. This showing a 0 result on the OnTick() function once server connection and price data have been established.
void OnTick(){ chart_objects(); //source file for standardDeviation & rSquared if(......){ if(....){ if(.....){ if(....){ if(....){ if(.... )){ if(.....){ if(.....){ if(rSquared >= minRSquared && rSquared <= maxRSquared){ //rSquared figure is read perfectly if(.....){ if(stringFindJPY >= 0){ //if the pair has the JPY if(standardDeviation <= ....&& standardDeviation >= ....){//standardDeviation is not being read. automatedSpotShort(); //spot_market_execution.mqh }//standardDeviation else { ....} } //stringFindJPY else { //If the JPY is NOT in the pair. if(standardDeviation <= maxStandardDeviationHam && standardDeviation >= minStandardDeviationHam){ automatedSpotShort(); //spot_market_execution.mph BarTime=Time[0]; } //standardDeviation else { ... } } } //OperationMode else { ..... } } //rSquared else { .... } } //(breakeven * Point >= stopLoss) else { .... } } //(AccountEquity() / marginRequired * 100 >= brokerMarginLevel) else { .... } } //(TimeCurrent() < Time[0] + (Period() * 60)) else { .... } } //marginBuffer else { .... } } //MaxSpread else { .... } } //regression else { .... } } // Suspensopn else { .... } } //Opening of Trade } //NewBar } //Momentum }//Time }//OrdersTotal }//BarTime }
The source code for the `standardDeviation` % the rSquared is read from the `chart_objects()` function.
Why is the rSquared figure read perfectly, but not the standardDeviation, despite the presence of the source file. There is no rational explanation for this.
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Hello
I have a snippet of code which should send the Standard Deviation of a currency pair to Print() & SendMail().
Having correctly formatted the figure, having correctly declared the variables, and having included the correct source files at the top of the EA, I fail to see why I get the following result:
The Standard Deviation is a double variable, which is converted to a string with the %0.0f function.
This is normally the result that is returned when just the variable type is declared, but no clarification is present as to what the variable is supposed to be. I'm an experienced Front Office Developer and I have never had this issue before.
This is infuriating because this has worked perfectly prior to me transferring this to a separate function, which is then called from the Print() the SendMail() commands. I do not see any reason as to why this is happening.
I know the number of documents look like overkill but these .mqh documents serve several other documents, so having centralised global declarations is much more efficient.
I have included the document for you to recreate the problem if you so wish.