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Yair Altman


Consultant

Last seen: 3日 前 2007 以来アクティブ

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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回答済み
Exporting images (png) through export_fig - painfully slow
Try to either reduce the resolution (the -r450 part), or to save as a vector-graphics image (PDF/EPS) rather than a PNG bitmap.

2日 前 | 0

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export_fig
Publication-quality export of Matlab figures and axes to various vector & bitmap formats

26日 前 | ダウンロード 1311 件 |

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How to save very large image to original resolution
Try to use export_fig's sister image-export utility, ScreenCapture: https://www.mathworks.com/matlabcentral/fileexchange/24323-s...

26日 前 | 0

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

約1ヶ月 前 | ダウンロード 58 件 |

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ScreenCapture - screenshot of component, figure or screen
ScreenCapture gets a screen-capture image of any Matlab GUI handle, or specified screen area rectangle

2ヶ月 前 | ダウンロード 66 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)

2ヶ月 前 | ダウンロード 3 件 |

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cprintf - display formatted colored text in Command Window
Displays sprintf-formatted strings in the Command Window using the specified color/underline style

6ヶ月 前 | ダウンロード 102 件 |

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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.

6ヶ月 前 | ダウンロード 3 件 |

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Can I somehow improve performance of str2double?
I use the following function to convert a cell-array of strings to a cell-array of numeric values (where applicable) - it is ~2-...

7ヶ月 前 | 2

回答済み
Speed issues with Matlab code compiled using SDK compiler for Python
Perhaps your deployed environment is different from your Matlab &D one. For example, perhaps you can access a GPU on the R&D env...

8ヶ月 前 | 0

回答済み
How To Clear Java Heap Space Memory????
Clearing Matlab's Java heap space has been long awaited, but I'm afraid that the suggested submission (Davide Tabarelli's JavaHe...

9ヶ月 前 | 2

回答済み
Import data tool speed
The import tool GUI only shows you a preview of the data, based on the top N lines in the file, it does not read and process the...

9ヶ月 前 | 0

| 採用済み

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setFigDockGroup
Sets a figure's docking group container

10ヶ月 前 | ダウンロード 10 件 |

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MATLAB Profiler - Granularity of Information
Use the [undocumented] -detail builtin profiler option, as in: profile on -detail builtin This works on old Matlab releases as ...

約1年 前 | 1

| 採用済み

回答済み
How can I make the plot transparent in a gscattter?
Nice answer Adam, but not exactly accurate if you are willing to use some undocumented features... The underlying objects in a...

約1年 前 | 3

回答済み
MATLAB export_fig crops title
This is fixed in the latest version of export_fig (3.09). In the future, report such issues in export_fig's issues page: https:/...

約1年 前 | 0

| 採用済み

回答済み
How to speed up a code from the Code Profiler Results ?
Try to set the "Vectorized" property using the odeset function, before running ode45. Also, specifying the Jacobian in advance (...

約1年 前 | 0

| 採用済み

回答済み
[Soft question] Tips and tools to analyze unfamiliar OO code
For inspecting a single object or class, try the GUI-based uiinspect utility (https://www.mathworks.com/matlabcentral/fileexch...

約1年 前 | 0

回答済み
Heatmap Axis Labels Printing Vertically?
The heatmap's X labels orientation is dynamically determined based on the number of labels and the axes width. In other words, i...

約1年 前 | 1

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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

1年以上 前 | ダウンロード 1 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...

1年以上 前 | 0

| 採用済み

回答済み
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...

1年以上 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...

1年以上 前 | 0

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How can I clear stuck help popups?
Updates June 12, 2020: There is a recognized bug report on a very similar issue: https://www.mathworks.com/support/bugreports/1...

1年以上 前 | 5

| 採用済み

回答済み
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...

1年以上 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...

1年以上 前 | 0

| 採用済み

回答済み
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...

1年以上 前 | 3

| 採用済み

回答済み
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...

1年以上 前 | 0

回答済み
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 ...

1年以上 前 | 0

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

1年以上 前 | 0

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