Trader Toolbox realtime function is apparently undefined even when I have the file path identified.

Question

Giovanni Rodriguez 2017-7-29

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评论： Giovanni Rodriguez 2017-8-5

I receive the error, "Undefined function 'realtime' for input arguments of type 'ibtws'." when I run the realtime function. I have an established connection to IBTWS and market data subscription. Below is my code:

 % 
 %connects to ib
 %ib = ibtws('',7496)
 %define your stock
 %ibContract = ib.Handle.createContract;
 ibContract.symbol = 'RAD';
 ibContract.secType = 'STK';
 ibContract.exchange = 'SMART';
 ibContract.currency = 'USD';
 %retrieve live data
 f = '233';
 tickerid = realtime(ib, ibContract, f)
 end

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Giovanni Rodriguez 2017-7-30

which ibtws

ver('trading')

C:\Program Files\MATLAB\R2014b\toolbox\trading\trading\@ibtws\ibtws.p

% ibtws constructor

----------------------------------------------------------------------- -----------------------------

MATLAB Version: 8.4.0.150421 (R2014b)

MATLAB License Number: 'I have omitted for security'

Operating System: Microsoft Windows 10 Pro Version 10.0 (Build 14393)

Java Version: Java 1.7.0_11-b21 with Oracle Corporation Java HotSpot™ 64-Bit Server VM mixed mode

----------------------------------------------------------------------- -----------------------------

Trading Toolbox Version 2.1.1

(R2014b)

>>

Walter Roberson 2017-7-31

在 MATLAB Online 中打开

Which ABI version are you using? I just installed 971.06 (not the latest), and in R2015a I got to

No method 'reqMktDataEx' with matching signature found for class 'COM.TWS_TwsCtrl_1'.
Error in ibtws/realtime (line 62)
    c.Handle.reqMktDataEx(tickerID(i),s{i},fldList,0)

I do not happen to have R2014b installed on my Windows virtual machine; I could install it if necessary.

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Answer 1

Yair Altman 2017-7-31

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https://ww2.mathworks.cn/matlabcentral/answers/350800-trader-toolbox-realtime-function-is-apparently-undefined-even-when-i-have-the-file-path-identified#answer_276160

编辑：Yair Altman 2017-7-31

The realtime() function of Trading Toolbox for IB TWS was only introduced in R2015a. If you upgrade your Matlab license you should be able to use it, but not in your current R2014b.

If you need this functionality in R2014b (or any other Matlab release between R2007a and today), then try using my IB-Matlab toolbox instead: http://undocumentedmatlab.com/ib-matlab

Yair Altman

http://UndocumentedMatlab.com