Thread: MQL4 -gt R-Project - Interface Library

Originally Posted by ;

Maybe you could help me out...

When attempting to compile the EA you submitted in the first page, I have warnings telling me StartR, StopR, RX, etc. acts are not referenced and will be taken out of the exp file.

This is nothing to worry about. It does observe it optimized the .ex4 by not including but never used in this EA. (They must be there since other EAs or indiors utilizing mt4R.mqh may need them). Other compilers do so optimizing too without mentioning it (at least not labeled as warning) but the mql4 compiler is somewhat talkative.

When it compiles but MT4 does instantly crash then the route towards the Rterm binary is not accurate.

Additionally you require DebugView.exe (from microsoft) should you want to produce your own scripts (and set the debug level in RInit() to two ) since it cannot use Print() it requires this to output debug messages and you have to view what's going on until your script is completely working.

It also helps for debugging and development to perform a RExecute(manage, save.image('c:/path/to/somewhere/ / file.R')) following some intermediate results to save the whole workspace, which means you can load it in a separate R console to scrutinize it interactively and test matters.

Originally Posted by ;

This is nothing to fret about.

Okay, thanks!

I came across this today,Sat I am not sure I have everything set up as it is the week end Will the ea show anything without a ticks coming through
or will it show beyond bar history.... In other words does this just work during trading hours
Due

Originally Posted by ;

I came across this now,Sat I am not sure I have everything setup as it's the week end Will the ea reveal anything with no ticks coming via
or will it reveal past bar history.... In other words does this just work during trading hours
Due

It requires ticks to trigger the start() function. There are scripts which can simulate this on weekends.

For instance this to deliver a continuous stream of ticks into the chart:
Inserted Code /** * MT4/experts/scripts/ticks.mq4 * send a bogus tick each 200 ms into the chart and * all its indiors and EA until this script is removed. */ #property copyright © Bernd Kreuss #import user32.dll int PostMessageA(int hWnd, int Msg, int wParam, int lParam); int RegisterWindowMessageA(string lpString); #import int start() int hwnd = WindowHandle(Symbol(), Period()); int msg = RegisterWindowMessageA(MetaTrader4_Internal_Messag e); while(! IsStopped()) PostMessageA(hwnd, msg, 2, 1); Sleep(200); or the subsequent one to send just 1 tick and then exit (I have this attached to a hotkey Alt T on my platform for convenience):
Inserted Code /** * MT4/experts/scripts/one_tick. Send one bogus tick into the chart and * all its indiors and EA and exit. */ #property copyright © Bernd Kreuss #import user32.dll int PostMessageA(int hWnd, int Msg, int wParam, int lParam); int RegisterWindowMessageA(string lpString); #import int start() int hwnd = WindowHandle(Symbol(), Period()); int msg = RegisterWindowMessageA(MetaTrader4_Internal_Messag e); PostMessageA(hwnd, msg, 2, 1);

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this appears to be my two ^10th article in this forum


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Thanks that worked just wanted to make sure I have it put right
this is very interesting and I don't know anything about it

but I have been playing basket pairs
like
AUDUSD,EURUSD,GBPUSD if market
USDCAD,USDCHF,USDJPY afterward buy or vise versa
with this I could burden the lot sizes

but just thinking outloud and studying a lot

would this imply I'd

buy AU 2 lots
sell EU 2 lots
GU nothing
Ucad sell 2 lots
Uchf nothing
UJ sell 1 lot

what exactly does the (0) represent?

Originally Posted by ;

would this mean I would

buy AU two lots
sell EU two lots
GU nothing
Ucad sell two lots
Uchf nothing
UJ sell 1 lot

Yes, but you should increase base_lots for larger (and more precise) numbers. You are able to try them onto an oanda demo account next week, there you are able to trade in units and not in lots and have much more flexibility at the lot sizing (1 lot == 100000 units and you are able to exchange as small as 1 device ).

Also try the other EA I posted in one of the recent postings: trendomat.mq4 it has some experimental new configurations.

Been playing with both all day

Oh I managed to run it, I mispelled the address. Although the thing seems to not be painting. I wonder ...

I left it run, Great package! Thanks 7bit

Originally Posted by ;

It requires ticks to activate the start() function. There are.

For instance this to send a continuous stream of ticks to the chart:
[code]
/ / **
* MT4/experts/scripts/ticks.mq4
* send a bogus tick every 200 ms to the chart and
* all its indiors and EA until this script is removed.
Decision /

#property copyright © Bernd Kreuss

#import user32.dll...

phwoar that is a wicked hack. Have not used it but can see the possibility.

Question 1: can this be used to'create' a bogus emblem and then stream data to it? An program could be installed as the'host' sending data?

Or, you might stream bogus data to a fresh exotic emblem you'd not actually need to trade but can load to mt4... that way you aren't breaking any data on your own real-traded charts.

Question two: can this be used to set a custom spread? (or was that the stage and I am too tired to realise?)