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MT4: Create Variables on the fly

  • #21
  • Sep 10, 2011 11:54am Sep 10, 2011 11:54am
I am back I have two files both have parts that are numbers and strings parts of both are enscripted. the one that starts with ATSX contains start up copyright and version screen information which are strings and enscripted. the startup screens are shown in the pics. this file contains confirgure information for 5 different progarms that all work together if very complicated, because it not only has default settings that can not be changed but also holds user prefered system settings which are loaded at start up similar to windows holding user settings.


the second file is a simple short configure file for one program. it to is enscripted.

both files contain parts in text and binary formats the ending texts is posted to the file with the current date that they were last accessed.



had to put the ini files in a zip to upload. They can be open with notepad.

Keit
Attached Image(s) (click to enlarge)
Click to Enlarge Name: Copyrite.jpg Size: 40 KB
Click to Enlarge Name: version screen.jpg Size: 75 KB
Attached File(s)
File Type: zip ini files.zip   2 KB | 385 downloads
Trader Keit ... Methods Of A Dirt Road Mad Man....
  • #22
  • Sep 10, 2011 12:14pm Sep 10, 2011 12:14pm
CockeyedCowboy, Thanks a lot.

Do you have any more infos of how I would go about if I wanted to try to implement something you suggested for my own needs?



__Thanks__ MJ
  • #23
  • Sep 10, 2011 12:23pm Sep 10, 2011 12:23pm
I'm a bit unsure if I understand you correctly so if you don't mind just a couple of questions to clarify.

One... works like a regular data file like MT's price data files
You mean the History files?

Yes, similar. but it can contain any data. I am current working on currency strength indexes for the indiviual currencies. Similar to the dollar index but not trade weighted. its takes time to calculate so I am created a history file of past daily data.


that contain date, high, low, open, close, and volume. now this data can be of any data
Also different data types or only doubles ?

It can be of any type but you must not make a mistake in reading or writing to this file. or the file will be junk.



not just price it can cantain anything from dailly data on stoch. MAs MACD or custom studies.


I created a custom index file similar to MT price data:
How is such file created? Any more info?

It would take a long time to explain and at the end may not fully come close to what your looking for, it would be best to give me a simple example of what your looking for and I can tell you how to do it.




that contains daily data on currencies, but it is indexed in reverse that is; MT uses the 0 index as the current (last) data were I index the current as the last peice (highest index) of data and resize the array to store new data.




Two... This is what I call a signature file which is nothing more then a configure file containing anything and almost everything that is read into the program and saved back to the file when finished. This enables you to keep your setting current that is the last settings are reused, parts of the file are defaults that can not be changed and can not be over writen. all numbers can be handled easily strings can be handled too from the same file as numbers but you will need a string array to read them.


You can create these file as plain text or binary files and can even enscript them. you can even have the file contain both text and binary formats and only have part of the file inscripted. You can even create these files from within your code, that is, if your code needs a config file and one does not exist it simply creates it and fills it with the start up defaults.

Yes, I was thinking of implementing this too.

This type (type 2) in basicly a configure file. the two files I just uploaded are of this type. They are uses to protect your code and save settings that way your not having to reset the parameters in that dumb dialog box each time you start up the program.

One of the files actually contain configure information on 5 programs that all run together some of it is numbers and some is strings, parts are in text format and some in binary format, parts are enscripted and parts are not. the key is for the program to know were there part of the files begin and to read only there information.




You need a good handle on both files and arrays.

There are for sure smarter guys out there but I did use arrays too some extend and started to play around with files.


cause and error may render the file junk.if you use something like that a lot: do you still get often junk files or after the code is proper it works nicely.

If MT crashes the file can be distroyed and rendered junk, but other then that I had no problems useing them and they updated very clean. If one goes bad all I do is delete it and restate the program to create a new one and Iam back in business. no need to have any backups, if the file already exist then the program doesnot rewrite it it will use the existing one.

Thank you a lot: this sound really interesting: if possible I would like to have more infos or kindly ask for some code or whatever - thanks a lot.



If you give me a sample of what your really want I can show you have to create it, mind you it may take a lot work and yes mindfucks.

Keit
Trader Keit ... Methods Of A Dirt Road Mad Man....
  • #24
  • Edited 12:38pm Sep 10, 2011 12:26pm | Edited 12:38pm
I will upload for test purpose a very simple example.

Very small script.
PHP Code
 //+------------------------------------------------------------------+
//|                                                     EXAMPLE1.mq4 |
//|                      Copyright © 2011, MetaQuotes Software Corp. |
//|                                        http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2011, MetaQuotes Software Corp."
#property link      "http://www.metaquotes.net"

extern string   sExtUniquePrefix = "1-testing"; 
extern bool     bExtStartDelay = true;    
//+------------------------------------------------------------------+
//| script program start function                                    |
//+------------------------------------------------------------------+
int start()
  {
//----
   Alert("sExtUniquePrefix: <", sExtUniquePrefix, "> bExtStartDelay <", bExtStartDelay, ">.");
    
//----
   return(0);
  }
//+------------------------------------------------------------------+
1. I would like to save the two variables so by next startup it can be loaded from an external file.

2. is it possible (not sure by what you said and by the file comments you uploaded) to manually change such startup files in a text editor.
__Thanks__ MJ
  • #25
  • Sep 10, 2011 12:47pm Sep 10, 2011 12:47pm
I have a difficalt time with english and when some one uses prefixes its even worse, let me rip your code and see what it says. and I will get back to you, if you prefer to email something sensitive you can do so

you can NOT change the file with a text editor, the purpose of enscripting is to hide what is in the file for others. if you change any thing its not going to work. you can open the files with a text editor but its only going to show you what is in text formate and un enscripted.

keit
Trader Keit ... Methods Of A Dirt Road Mad Man....
  • #26
  • Sep 10, 2011 12:52pm Sep 10, 2011 12:52pm
I have a difficalt time with english
In case you speak German, I do.


you can NOT change the file with a text editor
Ok I see.
__Thanks__ MJ
  • #27
  • Sep 10, 2011 1:55pm Sep 10, 2011 1:55pm
Quoting CockeyedCowboy
M_j
this is an interesting topic.

One... works like a regular data file like MT's price data files that contain date, high, low, open, close, and volume. now this data can be of any data not just price it can cantain anything from dailly data on stoch. MAs MACD or custom studies. I created a custom index file similar to MT price data that contains daily data on currencies
keit
if I understood you correctly my next Example is what you mentioned above.

int iOwnCalLive[103];
int iOwnCalLive2[103];

Could be replaced with an index file you mentioned above? or did I misunderstand you.

I'm out for tonight - thanks.

Attached: ExampleIndi.mq4
Attached Image (click to enlarge)
Click to Enlarge Name: example.gif Size: 10 KB
Attached File(s)
File Type: mq4 ExampleIndi.mq4   4 KB | 417 downloads
__Thanks__ MJ
  • #28
  • Sep 10, 2011 2:20pm Sep 10, 2011 2:20pm
Quoting CockeyedCowboy

One... works like a regular data file like MT's price data files
You mean the History files?

Yes, similar. but it can contain any data. I am current working on currency strength indexes for the indiviual currencies. Similar to the dollar index but not trade weighted. its takes time to calculate so I am created a history file of past daily data.

Keit
. I was not sure about this. Do you use this index files only for precalculated past data or do you also update them with live data on the fly and use them in a similar manner as arrays?
__Thanks__ MJ
  • #29
  • Sep 11, 2011 12:25pm Sep 11, 2011 12:25pm
M_j

heres a sample code it is not a working code but will give you the direction to write your own routines.

Keit


Quoting M_j
I will upload for test purpose a very simple example.

Very small script.
[php]



//+------------------------------------------------------------------+
//| EXAMPLE1.mq4 |
//| Copyright 2011, MetaQuotes Software Corp. |
//| http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "Copyright 2011, MetaQuotes Software Corp."
#property link "http://www.metaquotes.net"...
Attached File(s)
File Type: mq4 sample.mq4   10 KB | 413 downloads
Trader Keit ... Methods Of A Dirt Road Mad Man....
  • #30
  • Sep 11, 2011 12:33pm Sep 11, 2011 12:33pm
M_j

the file is updated on the close of each bar at which time a new element is added to store this resent closed bar. when a new bar opens that data is kept in memory till the bar closes again a new element is added to the data file and the information is stored. if you close the program down any bar that has not close will not be saved. when you start the program again it will look to see if they are any missing bars of data if so will calculated them similar to any indicator with missing bars of data, it will store this new data into the file and continue as above.

I will look at your second example, but not today have some work to do on my own before trade time tonight.


Keit




Quoting M_j
. I was not sure about this. Do you use this index files only for precalculated past data or do you also update them with live data on the fly and use them in a similar manner as arrays?
Trader Keit ... Methods Of A Dirt Road Mad Man....
  • #31
  • Sep 11, 2011 5:27pm Sep 11, 2011 5:27pm
Quote
I mainly come from a hobby 'python' background...
Semi-related: I just released a wrapper around prof7bit's "Metatrader Python Integration"[1].
The idea is to make it easier to code EAs, by exposing MT's functionality in a transparent way to python programmers. I haven't tested it much, though.

If you are interested you can find the docs and code here:

http://www.udec.cl/~cpolymeris/MetaTraderPy


[1] http://sites.google.com/site/prof7bi...on-integration
  • #32
  • Edited 2:24am Sep 12, 2011 1:36am | Edited 2:24am
hi CockeyedCowboy;

Thanks a lot. It's very kind of you.

I had something along this lines in mind: but there are always some other good helpful points I might not have thought of. Like the tip about the bool values.

I also had a look at hanover's thread who does something similar in his indicators. http://www.forexfactory.com/showthread.php?t=163158
__Thanks__ MJ
  • #33
  • Edited 2:28pm Sep 12, 2011 2:02am | Edited 2:28pm
cpm:
Thanks a lot for posting.
I'm definitely interested. I will be checking this out.
Seems you just registered for this
So you are warmly welcomed.


THANKS



Quoting cpm
Semi-related: I just released a wrapper around prof7bit's "Metatrader Python Integration"[1].
The idea is to make it easier to code EAs, by exposing MT's functionality in a transparent way to python programmers. I haven't tested it much, though.

If you are interested you can find the docs and code here:

http://www.udec.cl/~cpolymeris/MetaTraderPy


[1] http://sites.google.com/site/prof7bi...on-integration
__Thanks__ MJ
  • #34
  • Oct 3, 2011 3:38pm Oct 3, 2011 3:38pm
@cpm that's a nice framework for Python based indicators. I can't help but wonder if something like Aptana Studio could be used with its debuggers and such while developing with it.

And the code is clean enough to be extended. Nicely done. I am already a fan of 7bit's work!
  • #35
  • Last Post: Oct 5, 2011 9:42am Oct 5, 2011 9:42am
@cpm Nevermind about the debuggers as I read about the very short time available to run an external process from MT4.
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