Yair Altman
Consultant
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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Content Feed
Submitted
propertiesGUI - display data in editable context-aware table
propertiesGUI processes and displays a list of data property values in a context-aware GUI table
1 day ago | 5 downloads |
Operand stack and Execution stack Error using append_pdfs
append_pdfs only accepts PDF input files, not PNG files or any other non-PDF files
9 days ago | 0
How to add multiple styles to my uiTree?
This looks like an internal Matlab bug. Specifically, after deleting nodes, the uitree's internal StyleConfigurationStorage prop...
19 days ago | 0
| accepted
Submitted
cprintf - display formatted colored text in Command Window
Displays sprintf-formatted strings in the Command Window using the specified color/underline style
24 days ago | 111 downloads |
Submitted
IQML - Matlab connector to IQFeed
Matlab connector to IQFeed optimized for reliability, ease-of-use, functionality and performance (including parallelization)
28 days ago | 2 downloads |
Submitted
export_fig
Publication-quality export of Matlab figures and axes to various vector & bitmap formats
1 month ago | 1373 downloads |
Submitted
checkClass - inspect a Java/Matlab/COM/C++/.NET class
inspect a Java/MCOS/COM/C++/.NET class object or name and display its methods, properties, events, interfaces, superclasses, con...
1 month ago | 5 downloads |
how to find brushed data
In the new graphics system (R2014b onward), the brushed data info can be extracted from the hidden/undocumented BrushHandles pro...
3 months ago | 1
| accepted
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.
4 months ago | 0
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...
5 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
5 months ago | 40 downloads |
Submitted
ScreenCapture - screenshot of component, figure or screen
ScreenCapture gets a screen-capture image of any Matlab GUI handle, or specified screen area rectangle
6 months ago | 62 downloads |
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-...
12 months ago | 3
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...
1 year ago | 0
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...
1 year ago | 2
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...
1 year ago | 0
| accepted
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 ...
1 year ago | 1
| accepted
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...
1 year ago | 3
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:/...
1 year ago | 0
| accepted
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 (...
1 year ago | 0
| accepted
[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...
1 year ago | 0
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...
1 year ago | 1
Submitted
popupPanel Displays a popup panel with specified content
popupPanel Displays a popup panel with specified file contents, help topic, HTML or webpage
1 year ago | 2 downloads |
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...
2 years ago | 0
| accepted
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...
2 years ago | 0
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...
2 years ago | 0
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...
2 years ago | 6
| accepted
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...
2 years ago | 0
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...
2 years ago | 0
| accepted
