Hi Codersguru,

I have no experience with MQL4 language, but i need a very simple yet time saving indicator.

I need to develope an indicator that will draw a horizontal line based on some arithmetic calculations. (ie. Like a camarilla indicator, except the lines do not need to be re-drawn or updated, they will be fixed).

All i need is a simple example of how to do this in the coding, and I will be able to do the rest on my own.

For example,
{
Line1 = 1+1
Draw Line1
}

I know this sounds simple, but i just don't know how to do the initial setup and getting a horizontal line drawn on my chart.

Of course there will be much more calculations and equations to this indicator, but a simple example and setup would be greatly appreciated.

Thanks!!

If you count 3bars for signal now count 4bars simply yes ? Codersguru has a nice article about another way in mql4 site

I have a question:

This may require some additional programming that can't be done on MT. Not sure. Basically, I have an EA that both backtests and forward tests well in MT with Alpari data. On other broker's datafeeds, there is often a discrepancy between trades. Sometimes, if a trade is opened on Alpari, it may not be opened with a different broker or vice versa. Is it possible to write some kind of script that will execute trades on my broker's platform just after a trade is executed on Alpari's platform?

For example, I get a signal to buy 2 lots of cable at 1.9450 on Alpari. The trade is executed. That same order is then entered on my live broker's platform a split second later. When a stop or t/p level is hit on Alpari and the trade is closed, that same trade is then closed on my live broker's platform.

This is not a scalping system, so if there is a 2 pip discrepancy between the two prices, it's not a big deal. Does anyone know if this is possible, and if so, how do I go about doing it? Thank you.

Codersguru,

Can you please check MTF capabilities of xpMA?

Many Thanks,

Pippt

Please see post #364 at:

Multi Timeframe Indicators

simple question but i can't figure it out. what math function in mql is used to round out a double value?

say for example, i've got 0.69 and i want the result to be .70. or if the value is .63 and the result would be .60.

the mathceiling() and mathfloor() do not do the trick.

Hello everyone...

Thanks to CodersGuru and his excellent course, I am attempting to learn MQL4
by converting an indicator I wrote in MQL3.

I have run into a snag and would appreciate some help... if someone could please tell me what I am doing wrong in the following code.

The problem is in the 2 If statements... at line 78 & 79

//+------------------------------------------------------------------+
//| First_Indicator.mq4 |
//| Codersguru |
//| http://www.forex-tsd.com |
//+------------------------------------------------------------------+
#property copyright "Codersguru"
#property link "http://www.forex-tsd.com"
#property indicator_chart_window
#property indicator_buffers 8
#property indicator_color1 Red
//---- buffers
double ExtMapBuffer1[];

//----------------- Variable Declarations ----------------------+
int pos=0;

double Pivot_Point = 0;
double new_Pivot_Point =0;
double prev_Pivot_Point=0;
double Pivot_Factor=0;
double LastClose=0;

//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- indicators
SetIndexStyle(1,DRAW_LINE,STYLE_SOLID,1);
SetIndexBuffer(0,ExtMapBuffer1);
string short_name = "Pivot Line";
IndicatorShortName(short_name);
return(1);
}

//+------------------------------------------------------------------+
//| Custor indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
return(0);
}

//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{
int counted_bars=IndicatorCounted();

//---- check for possible errors
if (counted_bars<0) return(-1);

//---- last counted bar will be recounted
if (counted_bars>0) counted_bars--;
int cnt=Bars-counted_bars;

//---- main calculation loop
while(cnt >= 0)
{
LastClose = Close[cnt];
If (LastClose > Pivot_Point) //Line 78
If(new_Pivot_Point > prev_Pivot_Point) //Line 79
{
prev_Pivot_Point = new_Pivot_Point;
Pivot_Point = new_Pivot_Point;
}

ExtMapBuffer1[cnt]= Pivot_Point ;
cnt--;
}
return(0);
}

These are the compiler messages -
---------------------------------------------------------------
'If' - function is not defined .....(78,10)
'If' - semicolon expected .....(79,13)
'If' - function is not defined ...(79, 13)
'{' - semicolon expected ....(80, 13)
----------------------------------------------------------------

No matter what I do, I can't seem to come up with what the problem is... I know it is very simple, but it is escaping me...


Thanks to all who can assist in this basic question....

Chief

P.S. Happy, Healthy, Prosperous New Year to ALL

MQL is case sensitive: use "if" instead of "If".

WOW... that was Fast....

THANK YOU so much for the fast reply... solved it...

your response is so very appreciated... have a great new year...

Chief

There's "MathRound(double x)" which rounds a value to its nearest integer; same as "MathFloor(x+0.5)", I suppose. To get rounding to one decimal you can use a decimal shift/unshift expression like "MathRound(x*10)/10".

How can I add arrows to the attached to show up and down at the cross?

Attached Files

#MTF cross.mq4 (4.1 KB, 25 views)