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Yair Altman


Consultant

231 total contributions since 2007

Website: http://UndocumentedMatlab.com
LinkedIn: http://www.linkedin.com/in/yairaltman

Author of "Accelerating MATLAB Performance" book:
http://UndocumentedMatlab.com/books/matlab-performance

Author of "Undocumented Secrets of MATLAB-Java Programming" book:
http://UndocumentedMatlab.com/books/matlab-java

MSc Computer Science, BSc Physics (both with top honors)

Professional programmer and manager since 1991

Contact me: altmany at gmail.com

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Yair Altman's Badges

  • 6 Month Streak
  • Revival Level 3
  • Knowledgeable Level 3
  • Thankful Level 1
  • First Answer

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Contributions in
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Answered
How do I programmatically set the size of the the web browser window that is created with the MATLAB web command " web " ?
Note: undocumented/unsupported: [h1,h2,h3] = web('http://news.google.com','-notoolbar','-new'); % open a web page jWindow = ...

15 hours ago | 0

Answered
What happened to the figure toolbar in R2018b? Why is it an axes toolbar? How can I put the buttons back?
For the benefit of readers who don't follow my blog, Michelle Hirsch posted the following comment yesterday, which sheds some li...

14 days ago | 0

Answered
Parfor loop introduces strange R%1 variable when using 2 reduction variables
I was able to reproduce your problem on my R2018a and R2018b Windows10 installation, but not in 19a. Apparently this bug (it is...

20 days ago | 1

Answered
Problem with history function. Trading toolbox
Here's how you can fetch IB's historical data using the IB-Matlab connector: >> data = IBMatlab('action','history', 'symbol','I...

20 days ago | 0

Answered
Error with " Request Interactive Brokers Historical Data" example
Here's how you can fetch IB's historical data using the IB-Matlab connector: >> data = IBMatlab('action','history', 'symbol','I...

20 days ago | 0

Answered
Trading Toolbox - Retrieve Option Chain from Interactive Brokers
Here's how you can fetch the full option chain using the IB-Matlab connector, for example all futures options for the 10-year US...

20 days ago | 0

Answered
Problems for Interactive Brokers connection
Trading Toolbox support for Interactive Brokers is limited to Windows only. This is clearly mentioned in the documented system r...

20 days ago | 1

Answered
java.io.File - strange behaviour
With most Java methods, you can follow the method invocation parentheses with a dot, thereby chaining methods. For example: myJP...

25 days ago | 1

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Submitted


IQML - Matlab connector to IQFeed
Matlab connector to IQFeed optimized for reliability, ease-of-use, functionality and performance (including parallelization)

27 days ago | 3 downloads |

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calcGreeks: Calculate option Greeks (European Black/Scholes)
calcGreeks computes fair price and Greek values for vanilla European options using the Black-Scholes-Merton model, optimized for...

27 days ago | 3 downloads |

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Answered
UIComponent JTextField Text alignment
Use JTextField.JavaPeer.CENTER or the value 0 instead of 'CENTER': JTextField.HorizontalAlignment = JTextField.JavaPeer.CENTER;...

30 days ago | 0

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Answered
R2017a - Unsupported major.minor version 52.0
52.0 indicates Java classes compiled with JDK 8 - These classes can only be run under Java 8 or newer. Until R2017a Matlab integ...

1 month ago | 1

Answered
Error when connecting to ib trader workstation
The Trading Toolbox's IB connector is based on ActiveX and is therefore only available on Windows, not Mac or Linux. So if you h...

1 month ago | 0

Answered
New line in legend does not work anymore in MATLAB 2017b
The reason for the problem is that the default legend Interpreter ('lex') does not know how to interpret the '\n' in the label. ...

1 month ago | 0

Submitted


checkClass - inspect a Java/Matlab/COM class object/name
inspect a Java/MCOS/COM/.NET object or classname and display its methods, properties, events, interfaces, etc.

1 month ago | 9 downloads |

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Answered
How to colorize the document tabs of the editor?
I looked into this problem but I could not find a way to do so. What you proposed is the way that it should have worked, but i...

2 months ago | 1

Answered
Adabting Ui from 2013 to 2016
Unfortunately, The HeightLimits and WidthLimits properties were removed from uiflowcontainer at some point in time. This is quit...

2 months ago | 0

Answered
Trading Toolbox (V3.5) NOT working with latest IB API
Check whether you have correctly set the relevant settings on your TWS/Gateway's API configuration panel, specifically "Enable A...

3 months ago | 0

Answered
Microsoft Visual C++ Runtime Library Error with Matlab
As you've noticed, using IB's COM/ActiveX API (which is used by the Trading Toolbox) has severe limitations. In addition to the ...

3 months ago | 0

Answered
I bought MATLAB and Trading toolbox to automate my trading with Interactive brokers (IB) in Dec. 2017, but it doesn't work.
As you've noticed, using IB's COM/ActiveX API (which is used by the Trading Toolbox) has severe limitations. In addition to the ...

3 months ago | 1

Answered
Connected to interactive brokers after the update
Consider trying the alternative IB-Matlab toolbox, which is actively maintained since 2010: <https://undocumentedmatlab.com/IB-M...

4 months ago | 0

Answered
options for layout gui
Hi Walter - I'm not sure why you say that <https://undocumentedmatlab.com/blog/uitree> no longer works - it works perfectly fine...

4 months ago | 0

Submitted


findjobj - find java handles of Matlab graphic objects
Find java objects contained within a specified java container or Matlab GUI handle

4 months ago | 161 downloads |

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Answered
Problem in setting Yaxis value
Try this - note that it relies on the hidden/undocumented axis property *YRuler* (and similarly for *XRuler*, *ZRuler*): ax...

5 months ago | 0

Answered
Why do I get an "actxserver" error when trying to connect to Interactive Brokers Trader Workstation with the "ibtws" command?
Sometime in recent years, presumably around TWS API 9.70, IB changed their COM server's ProgID from 'TWS.TwsCtrl.1' to 'TWS.TwsC...

6 months ago | 0

Answered
Interactive brokers(TWS) current version not working with MATLAB?
Sometime in recent years, presumably around TWS API 9.70, IB changed their COM server's ProgID from 'TWS.TwsCtrl.1' to 'TWS.TwsC...

6 months ago | 0

Submitted


attachScrollPanelTo - add scroll-panel to a uipanel or axes
Places the specified control/uipanel inside a scroll-panel that automatically appears when the container shrinks (resizes)

6 months ago | 13 downloads |

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Submitted


max_in_place - example of multi-threaded MEX function
Example of a multi-threaded MEX function, that can easily be adapted

6 months ago | 2 downloads |

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Answered
How to obtain handlers to line objects from a legend object?
Cross-reference: <https://undocumentedmatlab.com/blog/plot-legend-customization>

7 months ago | 0

Answered
possible to increase speed of power function applied to a vector?
In addition to what Jan said, perhaps your in your specific case it is possible to work at the exponent level, i.e. not Y=10^X b...

7 months ago | 0

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