How to code? - Page 106

IN10TION · #**1051** (**permalink**) 06-29-2008, 07:31 PM

:: the only way to close is NOT to use " == " in your code, instead everything have to close higher or lower then your price, use... higher " >= " price or lower " <= " price, yes price doesn't go like 1 2 3, it can jump from 1 to 5 in volatile market (like big news announcements), hope this helps a little

Quote:

Originally Posted by Ronald Raygun

Hello everyone.

I'm trying to code in an effective and reliable invisible stoploss, trailing stop and takeprofit into my EAs. So far, my code just looks for the bid/ask to equal the stoploss or takeprofit value. If the price equals that value, then close the trade.

The problem I'm having is that sometimes the price seems to skip. There is no progressive movement of price. How do I then get around that problem? and make an invisible TP/SL which is guaranteed to close the trade where necessary?

Big Be · #**1052** (**permalink**) 06-29-2008, 09:33 PM

luxinterior and ajk,
Thanks. I tried one of those methods before (I will have to find what I did) and it worked great for price but not for an indicator.
Have you successfully done it?
The indicator doesn't matter, if could be any of MT4's built-ins.

Big Be

Ronald Raygun · #**1053** (**permalink**) 06-30-2008, 02:28 AM

Quote:

Originally Posted by Big Be

I want to grab the highest and lowest values of an indicator over an entire chart. A while ago I tried what I thought should have worked, from within an EA, but it didn't.
(Sorry I don't have that attempt now to show you.)

Any ideas?

Big Be

using the iHighest function:

int iHighest( string symbol, int timeframe, int type, int count=WHOLE_ARRAY, int start=0)

set the count to "Bars" so.

iHighest(NULL, 0, 3, Bars, 0);

At least that what I think would work. Just check in your chart settings how many bars you keep in history. Default I think is 52,000 bars.

luxinterior · #**1054** (**permalink**) 06-30-2008, 06:28 AM

That works for price. He's wanting to find the highest and lowest of an idicator.

Lux

Devil2000 · #**1055** (**permalink**) 06-30-2008, 07:05 AM

Hello,

You can try this :

Code:

....

int highest=0, lowest=0, bar=WindowBarsPerChart();

for(int shift=0;shift<bar;shift++)
 {
    double indie=iCustom(.........,shift);

    if(highest<indie) highest=indie;

    if(lowest==0) lowest=indie;
    if(lowest>indie) lowest=indie;
 } 

.....

note: this code calculating the current open candle too, if you want to calculate the closed candle only, use shift=1.

Hope this helps,
Ardie

IN10TION · #**1056** (**permalink**) 06-30-2008, 10:31 AM

:: iBarShift will find for you the bar that start on that day/hour... or also the end bar for that day:hour... (depends what timeframe or chart you want to start to find your high/low).

int iBarShift( string symbol, int timeframe, datetime time, bool exact=false)

next...

:: use those bar positions to find the results of iHighest and iLowest

int iHighest( string symbol, int timeframe, int type, int count=WHOLE_ARRAY, int start=0)
int iLowest( string symbol, int timeframe, int type, int count=WHOLE_ARRAY, int start=0)

:: results & done , don't use any loops in this!

Devil2000 · #**1057** (**permalink**) 06-30-2008, 02:35 PM

Hello,

I'm looking to find a way to refresh a repaint indicator for every x minutes.
The only way to refresh it currently, is to click in the indicator on the chart and then click "ok". Can we automate it with MQL4 code?
I found something on codersguru's site, Programmatically Refresh your charts | www.metatrader.info, but it seems not working for me. Or is there anybody has try it and get different result (working)?

Thank you

IngvarDagmar · #**1058** (**permalink**) 07-02-2008, 12:28 AM

Sorry for my Englsih.

I want count number times condition is true only once per bar. Computer add up many times per bar. What wrong I do?

luxinterior · #**1059** (**permalink**) 07-02-2008, 01:25 AM

Quote:

Originally Posted by IngvarDagmar

Sorry for my Englsih.

I want count number times condition is true only once per bar. Computer add up many times per bar. What wrong I do?

Use a function like this...

PHP Code:


			
bool NewBar() {



    static datetime LastTime = 0;



    if (Time[0] != LastTime) {

        LastTime = Time[0];        

        return (true);

    } else

        return (false);

}

Then put an if statement round your main code, like...

PHP Code:


			
if(NewBar() == true){

// do the main processing here

}

Hope that helps.

Lux

TheRumpledOne · #**1060** (**permalink**) 07-02-2008, 01:40 AM

That was nice of you, Lux.

I found this:

Only process each bar once - MQL4 forum

Automated 2008.01.15 18:54 You could execute your code at the very first tick of a new bar ( i.e. right after the previous bar has closed ).
Here's a function that will return TRUE if a new bar has just formed:
// This function returns TRUE at the very first tick a bar i.e. after the previous bar has just closed
bool NewBar()
{
if(PreviousBarTime<Time[0])
{
PreviousBarTime = Time[0];
return(true);
}

return(false); // in case if - else statement is not executed
} you need to declare datetime PreviousBarTime at the beginning of your EA...
then in your code you could just use
if ( NewBar() )
{
...... code you need to be executed after a bar has closed here ....
} thank you
automatedfx@gmail.com

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I noticed you used STATIC... I looked it up... what's the advantage of using STATIC vs a global variable?