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Yair Altman


Last seen: 2日 前

Consultant

295 2007 年以降の合計貢献数

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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popupPanel Displays a popup panel with specified content
popupPanel Displays a popup panel with specified file contents, help topic, HTML or webpage

19日 前 | ダウンロード 5 件 |

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export_fig
Exports figures nicely to a number of vector & bitmap formats

20日 前 | ダウンロード 1719 件 |

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

20日 前 | ダウンロード 2 件 |

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graphics performance 2019a vs 2016b
R2019a uses the integrated axes toolbar, which constantly monitors mouse movements in order to generate data tips on-the-fly. If...

約1ヶ月 前 | 0

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Poor performance of mex file
You m-function uses parallelization (parfor), while your mex file does not. This in itself could cause your m-code to run much f...

約2ヶ月 前 | 0

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Increase CPU Speed - MAC
You can separate the problem into separate tasks and launch separate Matlab processes to process them in parallel. This is essen...

約2ヶ月 前 | 0

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How can I clear stuck help popups?
The "stuck popup" problem has annoyed me for years. I notice them, for example, if I display a large multi-line data-tip (or the...

約2ヶ月 前 | 1

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dynamic java path vs static java path
Some Java functionality, especially those that are concerned with Java events that need to propagate to Matlab callbacks, does n...

約2ヶ月 前 | 0

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Matlab in AVX2 mode (for AMD CPU's)
This is apparently fixed on R2020a as reported by @NedFlanders (original credit is apparently due to @MichelKatz): https://www...

約2ヶ月 前 | 0

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How to change Heatmap's Grid (Edge) appereance and behavior?
There are several alternatives: Update the grid style to a non-solid line, for example: hHeatmap = struct(h_map).Heatmap; hHe...

3ヶ月 前 | 2

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Unable to use Java class in a package - Undefined function or variable 'CartesianCoordinate'.
This problem could be due to numerous possible causes, and unfortunately Matlab is not very helpful in explaining the root cause...

3ヶ月 前 | 0

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How to load multiple excel files with multiple excel sheets and store it in matlab faster?
Try to use the 'basic' mode of xlsread, which reads the XLS file directly instead of using the much slower Excel instance: for ...

4ヶ月 前 | 0

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Interactive broker timeseries vs history?
Both of these functions in the Trading Toolbox call IB's reqHistoricalDataEx function internally, but for some reason Mathworks ...

4ヶ月 前 | 0

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Legend looks very weird
Run the following and check if you still see the same problem: plot(1:3,1:3,'ko-', 1:3,2:4,'ro-', 1:3,3:5,'bo-'); legend('Cere...

4ヶ月 前 | 0

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Scrollable text box for GUI with selectable/editable text
Your script generates a GUI that looks perfectly ok to me (fully scrollable & selectable) on my Win10, in both 18b and 20a. Yo...

4ヶ月 前 | 1

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How can I suppress warnings about javacomponent being deprecated?
Wrap your javacomponent code as follows: oldWarningState = warning('off', 'MATLAB:ui:javacomponent:FunctionToBeRemoved'); [hjc...

4ヶ月 前 | 0

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Plotting performance reduced in APP
App Designer creates an HTML/JavaScript-based webpages (uifigures), which are noticably slower than the Java-based figures that ...

4ヶ月 前 | 0

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Datafeed Toolbox IQFeed Level 1 Data Fields Description
Cross-reference: https://www.mathworks.com/matlabcentral/answers/330794-field-list-of-iqfeed-realtime-data In the Trading Toolb...

4ヶ月 前 | 0

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With eSignal/InteractiveData being discontinued in the DataFeed Toolbox, are there any other "mid-range" cost options for financial vendors?
A possible mid-range / low-cost financial datafeed is https://eodhistoricaldata.com, which has a Matlab connector called EODML.

4ヶ月 前 | 0

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Creating a time series object from IQFeed data.
Consider using my IQML (IQFeed-Matlab) connector as an alternative. IQML enables both synchronous (blocking) and asynchronous (b...

5ヶ月 前 | 0

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IQFeed: plot return from array of cells?
I believe that the DataFeed toolbox functions only store data in base workspace variables, from which you need to fetch them aft...

5ヶ月 前 | 0

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Is there a way to get the timestamp including milliseconds when using the timeseries function of the datafeed toolbox?
IQFeed only returns the millisecs if you set the connection's IQFeed API protocol to 5.0 (see the IQFeed changelog). In certain ...

5ヶ月 前 | 0

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Can't build Tick data from iQfeed for e-mini S&P Futures(symbol: ES)
Consider using my IQML (IQFeed-Matlab) connector for this. IQML enables both synchronous (blocking) and asynchronous (background...

5ヶ月 前 | 0

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How to effectively utilize listener and callback functions with iqfeed function realtime.
Consider using my IQML (IQFeed-Matlab) connector as an alternative. IQML enables both synchronous (blocking) and asynchronous (b...

5ヶ月 前 | 0

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How do I get tick-by-tick historical data from iqFeed ?
Consider using my IQML (IQFeed-Matlab) connector for this. IQML enables both synchronous (blocking) and asynchronous (background...

5ヶ月 前 | 0

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how to get multiple stocks datafeed for IQFeed?
I believe that the Datafeed Toolbox only allows specifying one symbol at a time. See here for example. As an alternative, consi...

5ヶ月 前 | 0

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Does the Matlab iqfeed link timeseries function provide bid ask data
I believe that IQFeed provides bid/ask data only for historic ticks (HTT,HTX,HTD) queries, but not interval queries (e.g. HIT). ...

5ヶ月 前 | 0

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How to plot data from iqfeed
Consider using my IQML (IQFeed-Matlab) connector for this. IQML enables both synchronous (blocking) and asynchronous (background...

5ヶ月 前 | 0

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IQFeed market depth and time series not working
!NO_DATA! is an IQFeed message that means there is no market-depth data for this symbol. It is my understanding that Market Dept...

5ヶ月 前 | 0

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Listener for receiving real time data through DataFeed Toolbox
Consider using my IQML (IQFeed-Matlab) connector as an alternative. IQML enables both synchronous (blocking) and asynchronous (b...

5ヶ月 前 | 0

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