Can this custom indicator ( iTrend.mq4 ) be programmed into an existing EA ...of so how would it be coded ??? - Indices - MQL4 and MetaTrader 4

Rashid Umarov 2008.07.04 11:31 #1

Yes, it's possible (see article Transferring an Indicator Code into an Expert Advisor Code. General Structural Schemes of an Expert Advisor and Indicator Functions), but why?

SeaWolf 2008.07.04 21:59 #2

wizkid:
??

if you are asking how to use, or call, a custom indicator, it's very simple... use the "iCustom" to define the function like this

double MyTrend=iCustom(NULL,0,"iTrend",0,0);

place the indicator in the "expert/indicator/" directory... then there is no need to specify either the path, or use the .mq4 file extension.

everything you need to know about the other values is in the MetaEditor Library. Other than that, my understanding is that trying to build the indicator into your EA like a function is a waste of time and computer resources. you do not really gain anything, terminal handles indicators and EA's differently and the processing of the indicator would chew up availability of the EA to Terminal thread. As separate files they would not conflict with each other.

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Jai Michael 2008.07.04 23:07 #3

seawolf wrote >>

if you are asking how to use, or call, a custom indicator, it's very simple... use the "iCustom" to define the function like this

place the indicator in the "expert/indicator/" directory... then there is no need to specify either the path, or use the .mq4 file extension.

everything you need to know about the other values is in the MetaEditor Library. Other than that, my understanding is that trying to build the indicator into your EA like a function is a waste of time and computer resources. you do not really gain anything, terminal handles indicators and EA's differently and the processing of the indicator would chew up availability of the EA to Terminal thread. As separate files they would not conflict with each other.

Rosh wrote >>
Yes, it's possible (see article Transferring an Indicator Code into an Expert Advisor Code. General Structural Schemes of an Expert Advisor and Indicator Functions), but why?

I did what you suggest and now I get this message when I compile...............'iCustom' - initialization expected C:\Program Files\Interbank FX Trader 4Demo\experts\PTTrend_201].1.mq4 (15, 16)

Ray 2008.07.04 23:15 #4

does the iTrend indicator have any input parameters?

If so, they need to be specified in the iCustom() call.

Jai Michael 2008.07.04 23:24 #5

phy wrote >>

does the iTrend indicator have any input parameters?

If so, they need to be specified in the iCustom() call.

So the input parameters need to be specified here...double MyTrend=iCustom(NULL,0,"iTrend",0,0);

Ray 2008.07.04 23:29 #6

double MyTrend=iCustom(NULL,0,"iTrend",P1, P2, P3, P4, 0,0);

All input parameters must be specified, yes. How many are there?

Jai Michael 2008.07.04 23:36 #7

phy wrote >>

double MyTrend=iCustom(NULL,0,"iTrend",P1, P2, P3, P4, 0,0);

All input parameters must be specified, yes. How many are there?

There are 7 ...So its P1 through to P7 as follows double MyTrend=iCustom(NULL,0,"iTrend",P1, P2, P3, P4, P5, P6,P7, 0,0);

Jai Michael 2008.07.04 23:42 #8

wizkid wrote >>

There are 7 ...So its P1 through to P7 as follows double MyTrend=iCustom(NULL,0,"iTrend",P1, P2, P3, P4, P5, P6,P7, 0,0);

This is what I have now double MyTrend=iCustom(NULL,0,"iTrend",0,0,0,40,8,25,200,0,0)....and I stil get the same error message 'iCustom' - initialization expected C:\Program Files\Interbank FX Trader 4Demo\experts\PTTrend_201].1.mq4 (15, 16)

Ray 2008.07.04 23:48 #9

Is the name iTrend or i_Trend ?

Jai Michael 2008.07.04 23:51 #10

phy wrote >>

Is the name iTrend or i_Trend ?

iTrend