Anybody use delphi with DCOM to drive R ?

[Phil_Trade]

I have trouble with GetSymbol('xxx'). If anyone, would be glad to share experience.

Philippe

[FT Support]

Hello,

What concrete trouble do you have?

[Phil_Trade]

Hello,

What concrete trouble do you have?

Ok the full story

I wrote a multi currency MT4 EA that communicate with R software via a DLL to compute cointegration p_value. It'work fine in forward test.

My goal is to verify it with ForexTesTer.
I have installed a new R sofware with Rdcom.
I have integrated in Delphi 7 the STATCONNECTORSRVLib_TLB library.
so far so good I can "talk" with R to compute 1+2=3 and read the result.

for getSymbol() i just find that i need Pchar() like this

MonTest:double;
Command := Pchar('mapaire <- 1+1') ;
RHandle.EvaluateNoReturn(Command);
MonTest := RHandle.GetSymbol(Pchar('mapaire'));

-> R compute well and i receive 2 in MonTest

But I have trouble to pass a matrix of iclose('xxx',5,i) and read the result of computation.

It seems we need to translate :
- double iclose into variant
- string into Pchar


my test to pass 10 iclose value from FT / Delphi to R

i : integer;
Prix : OleVariant;
Cours1,Cours2 : variant;

Prix := VarArrayCreate([1, 10 , 2, 1], varDouble);

for i:=1 to 10 do
begin

Cours1 := iClose('EURUSD',TimeFrame,i);
Cours2 := iClose('USDJPY',TimeFrame,i);

Prix[i,1] := Cours1;
Prix[i,2] := Cours2;
end;

but i not sure at all about variant etc

Could you help me to manage matrix that transfert iclose() value from FR into R ?

thks

Philippe