How can I write in an EA? - MQL4 and MetaTrader 4

Mladen Rakic 2014.01.11 15:19 #1291

sunshineh:
Hi,

I tried to change your code from this page:

https://www.mql5.com/en/forum/177583

because I want to change the TenkanSen Indicator in that way, that it is on the german dax only calculating from 9-17:30.

But I think I made something wrong because this is the same tankensen and the same calculation only without the time between 9-17:30 is missing.

Can you see my error

#property indicator_chart_window

#property indicator_buffers 1

#property indicator_color1 PaleVioletRed

#property indicator_width1 2

#property indicator_level1 0

#property indicator_levelcolor DarkGray

extern double SmaPeriod = 1;

extern int Price = PRICE_CLOSE;

extern string StartFrom = "09:00";

extern string EndAt = "17:30";

double TenkanSen[];

double TenkanSen_TimeLimited[];

int init()

{

IndicatorBuffers(2);

SetIndexBuffer(0,TenkanSen_TimeLimited);

SetIndexBuffer(1,TenkanSen);

return(0);

}

int deinit() { return(0); }

int start()

{

int c,k,count,counted_bars=IndicatorCounted();

if(counted_bars < 0) return(-1);

if(counted_bars>0) counted_bars--;

int limit = MathMin(Bars-counted_bars,Bars-1);

for(int i = limit; i>=0; i--)

{

string today = TimeToStr(Time,TIME_DATE);

datetime tfrom = StrToTime(today+" "+StartFrom);

datetime tto = StrToTime(today+" "+EndAt);

if (Time>=tfrom && Time<tto)

TenkanSen = iIchimoku(NULL,0, 9, 26, 52, MODE_TENKANSEN, i);

else { TenkanSen = EMPTY_VALUE; TenkanSen_TimeLimited = TenkanSen_TimeLimited; continue; }

//

TenkanSen_TimeLimited = 0; for (c=0,k=0; c<SmaPeriod && (i+k)<Bars; k++) if ( TenkanSen!=EMPTY_VALUE) { TenkanSen_TimeLimited += TenkanSen; c++; }

TenkanSen_TimeLimited /= (1.0*SmaPeriod);

}

return(0);

sunshineh

It is doing exactly what it is told to do : it takes the values from TenkanSen which is within the given time limit or inherits the previous value if the time is outside the bounds.

If you wish to ignore the data that is outside the given time limits you would have to rewrite the ichimoku completely or you can use a period converter of some sort and make it generate offline charts that would contain data only for given time period

Multi Timeframe Indicators HLC Bar Chart Indicator Coding help

julioz 2014.02.10 14:00 #1292

Some MQL4 training videos from Youtube, maybe useful for the newbies like me.

Jovager 2014.03.06 16:50 #1293

How can I write in an EA " If last losing trade was buy......", buy....., else ....

Thanks for help.

Jo

Mladen Rakic 2014.03.06 17:57 #1294

Jovager:
How can I write in an EA " If last losing trade was buy......", buy....., else ....

Thanks for help.

Jo

Try something like this :

int LastLoosingType()

{

datetime lastTime = 0;

int lastType = -1;

for (int i=OrdersHistoryTotal()-1; i >= 0; i--)

{

if (!OrderSelect(i, SELECT_BY_POS, MODE_HISTORY)) continue;

if ((OrderType() == OP_BUY || OrderType() == OP_SELL) && OrderProfit() = lastTime)

{

lastTime = OrderCloseTime();

lastType = OrderType();

}

return (lastType);

}

If it does not find a loosing trade it will return -1

How to code? Please fix this indicator code help

ccjjaa 2014.03.07 03:17 #1295

Has anyone managed to use the resource code to copy image files into an ex4 so that the ex4 can be transferred into another platform without having to transfer the images as well. I have tried just about every option for the resource path I can think of and the files do not transfer with the ex4 file. Below is the MQL4 help descriptionIncluding resources to executable files during compilation of mql4 programsAn mql4 program may need a lot of different

downloadable resources in the form of image and sound files. In order to

eliminate the need to transfer all these files when moving an executable file in

MQL4, the compiler's directive #resource should be used:

[TABLE] #resource path_to_resource_file

[/TD]

[/TR]

[/TABLE]

The #resource command tells the compiler that

the resource at the specified path path_to_resource_file should be included

into the executable EX5 file. Thus all the necessary images and sounds can be

located directly in an EX4 file, so that there is no need to transfer

separately the files used in it, if you want to run the program on a different

terminal. Any EX4 file can contain resources, and any EX4 program can use

resources from another EX4 program.

The files in format BMP and WAV are

automatically compressed before including them to an EX4 file. This denotes that

in addition to the creation of complete programs in MQL4, using resources also

allows to reduce the total size of necessary files when using graphics and

sounds, as compared to the usual way of MQL4 program writing.

The resource file size must not exceed 16Mb.Search for specified resources by a compilerA resource is inserted using the command

#resource ""

[TABLE] #resource "" [/TABLE]

The length of the constant string

must not exceed 63 characters.

The compiler searches for a resource at the

specified path in the following order:

·if the backslash "\" separator (written as "\\") is placed at the

beginning of the path, it searches for the resource relative to the directory

terminal_data_directory\MQL4\,

·if there is no backslash, it searches for the resource relative to

the location of the source file, in which the resource is written.

The resource path cannot contain the

substrings "..\\" and ":\\".

Examples of resource inclusion:

[TABLE]

[TR]

[TD]//--- correct specification of resources

#resource "\\Images\\euro.bmp" // euro.bmp is located in terminal_data_directory\MQL4\Images\

#resource "picture.bmp" // picture.bmp is located in the same directory as the source file

#resource "Resource\\map.bmp" // the resource is located in source_file_directory\Resource\map.bmp

//--- incorrect specification of resources

#resource ":picture_2.bmp" // must not contain ":"

#resource "..\\picture_3.bmp" // must not contain ".."

#resource "\\Files\\Images\\Folder_First\\My_panel\\Labels\\too_long_path.bmp" //more than 63 symbols

[/TABLE]

however theicon codefor changing the EA icon works no problem and transfers to the new platform and it uses a similar path to the resource examples above. An example of the #resource path could be helpful as it could be very likely that I am doing something wrong.Or is this perhaps just another glich with the new MT4?

Including bitmap resources inside Questions from Beginners MQL5 UNKNOWN RESOURCE TYPE

Mladen Rakic 2014.03.07 13:08 #1296

cja:
Has anyone managed to use the resource code to copy image files into an ex4 so that the ex4 can be transferred into another platform without having to transfer the images as well. I have tried just about every option for the resource path I can think of and the files do not transfer with the ex4 file. Below is the MQL4 help descriptionIncluding resources to executable files during compilation of mql4 programsAn mql4 program may need a lot of different

downloadable resources in the form of image and sound files. In order to

eliminate the need to transfer all these files when moving an executable file in

MQL4, the compiler's directive #resource should be used:

[TABLE] #resource path_to_resource_file[/TD]

[/TR]

[/TABLE]

The #resource command tells the compiler that

the resource at the specified path path_to_resource_file should be included

into the executable EX5 file. Thus all the necessary images and sounds can be

located directly in an EX4 file, so that there is no need to transfer

separately the files used in it, if you want to run the program on a different

terminal. Any EX4 file can contain resources, and any EX4 program can use

resources from another EX4 program.

The files in format BMP and WAV are

automatically compressed before including them to an EX4 file. This denotes that

in addition to the creation of complete programs in MQL4, using resources also

allows to reduce the total size of necessary files when using graphics and

sounds, as compared to the usual way of MQL4 program writing.

The resource file size must not exceed 16Mb.

Search for specified resources by a compilerA resource is inserted using the command #resource ""

[TABLE] #resource "" [/TABLE]

The length of the constant string

must not exceed 63 characters.

The compiler searches for a resource at the

specified path in the following order:

·if the backslash "\" separator (written as "\\") is placed at the

beginning of the path, it searches for the resource relative to the directory

terminal_data_directory\MQL4\,

·if there is no backslash, it searches for the resource relative to

the location of the source file, in which the resource is written.

The resource path cannot contain the

substrings "..\\" and ":\\".

Examples of resource inclusion:

[TABLE]

[TR]

[TD]//--- correct specification of resources

#resource "\\Images\\euro.bmp" // euro.bmp is located in terminal_data_directory\MQL4\Images\

#resource "picture.bmp" // picture.bmp is located in the same directory as the source file

#resource "Resource\\map.bmp" // the resource is located in source_file_directory\Resource\map.bmp

//--- incorrect specification of resources

#resource ":picture_2.bmp" // must not contain ":"

#resource "..\\picture_3.bmp" // must not contain ".."

#resource "\\Files\\Images\\Folder_First\\My_panel\\Labels\\too_long_path.bmp" //more than 63 symbols [/TABLE]

however theicon codefor changing the EA icon works no problem and transfers to the new platform and it uses a similar path to the resource examples above. An example of the #resource path could be helpful as it could be very likely that I am doing something wrong.Or is this perhaps just another glich with the new MT4?

Are you using "/portable" switch?

If not, that might be a problem (due to the path where the resource actually has to reside). Doing a guessing game now, but if it needs to know the path relative to the data path it either can be that a compiler is looking for resources at a wrong place or that the feature is simply not working in the new metatrader 4 yet (as so much features that still can not be used)

Metaeditor newly created files Coding help Requests & Ideas, the

ccjjaa 2014.03.07 23:36 #1297

Hi mladen,

I suspect it maybe yet another MT4 issue and I say that because the Help file instructs me to use the icon code the same way as the resource code and the icon code using a path to the file in the same image folder works so if one path works there should be no reason why another bit of code using the same path would fail? We are talking MT4 though so I guess anything is possible.

EA/indicator/script properties dialog - Path of property icon The new MQL4 syntax

Mladen Rakic 2014.03.08 11:17 #1298

cja:
Hi mladen, I suspect it maybe yet another MT4 issue and I say that because the Help file instructs me to use the icon code the same way as the resource code and the icon code using a path to the file in the same image folder works so if one path works there should be no reason why another bit of code using the same path would fail? We are talking MT4 though so I guess anything is possible.

That sentence (the "We are talking MT4 though so I guess anything is possible.") might be the one that describes all. We can not count on any stability or certainty in this new metatrader 4

Please fix this indicator PositionType() which indicator to predict

name 2014.03.10 22:00 #1299

mladen:
That sentence (the "We are talking MT4 though so I guess anything is possible.") might be the one that describes all. We can not count on any stability or certainty in this new metatrader 4

What do you think : when are they going to solve all those errors? A lot of people does not know what to do now

Pedro Pacheco 2014.04.27 15:14 #1300

The best way to learn how to programm robots with MQL4 or 5 is to check some open source robots to see how they operate. Only then you can learn how the code works and improve your learning with the book or manuals.

Hello All.. Question! Do the developers Simple code needed for

MQL4 Learning - page 130