Question for somebody who has seen the following post...

Dear all,

Please see this: http://www.mathworks.com/matlabcentral/fileexchange/29434-connecting-to-interactive-brokers-via-activex-api

The code is working perfectly, I am just wondering at this part of the code

%%now create an event listener and start displaying data
l = CListener('SPY');
l.startListening(tws,'trade');

How do you store this information in the array whilst its listening?

Best,

M

Answer 1

[Ataklti Kahsay]

Dear center how can i solve the following error:

Dot indexing is not supported for variables of this type.

Error in methanolOPEX (line 14)

CW_Cost = Aspen.Tree.FindNode("\Data\Utilities\CW\Output\UTL_COST\HX2").Value * 8000 ; %8000 hours per year

Error in Fitness_Function (line 50)

TOPEX = methanolOPEX(); % Operating Distillation Cost

Error in createAnonymousFcn>@(x)fcn(x,FcnArgs{:}) (line 11)

fcn_handle = @(x) fcn(x,FcnArgs{:});

Error in objAndConVectorizer (line 33)

Fvals(i,:) = feval(objFcn,(pop(i,:)));

Error in stepgamultiobj (line 68)

[nextScore,nextC,nextCeq,nextIsFeas] = objAndConVectorizer(pop, ...

Error in gamultiobjsolve (line 55)

state = stepgamultiobj(pop,thisPopulation,options,state, ...

Error in gamultiobj (line 304)

[x,fval,exitFlag,output,population,scores] = gamultiobjsolve(FitnessFcn,nvars, ...

Error in Main_Genetic_Algorithm (line 41)

[X, fval, exitflag, output, population, scores] = gamultiobj(@Fitness_Function, ...

Caused by:

Failure in user-supplied fitness function evaluation. Cannot continue.

MATLAB has experienced a low-level graphics error, and may not have drawn correctly.

Read about what you can do to prevent this issue at Resolving Low-Level Graphics Issues then restart MATLAB.

To share details of this issue with MathWorks technical support,

please include this file with your service request.

[Walter Roberson]

Aspen is probably empty. Creation of an ActiveX client probably failed.