Yair Altman

Consultant

Last seen: Today | Aktiv seit 2007

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Professional Matlab consultant/programmer. http://UndocumentedMatlab.com Books author: "Accelerating MATLAB Performance", "Undocumented MATLAB-Java Programming Secrets" (http://UndocumentedMatlab.com/books). Email: altmany at gmail.com

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How to prevent export_fig plot background images to have a low resolution?
Anti-aliasing is especially important for exported text characters, so by forcing export_fig to not anti-alias (using -a1) you a...

3 Monate vor | 0

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uifigure vector export size/resolution
As already noted above, neither print nor the exportgraphics functions support setting the output page size, and ignore the figu...

4 Monate vor | 0

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Is "Undocumented Secrets of MATLAB Java Programming" by Yair Altman still up to date?
As of the latest release (R2023b), most of what I posted over the years on the undocumentedmatlab.com website (and in the 2011 b...

6 Monate vor | 6

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How can I make the execution speed consistent while I am testing the speed of the programs?
I can certainly understand the desire to use a sandboxed environment that would enable you to optimize the performance of your p...

etwa ein Jahr vor | 0

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Get data point that was clicked on in graph
At your service :-) t=0:.01:5; y=sin(t); hPlot=plot(t,y); hPlot.ButtonDownFcn = @(h,e) disp(e.IntersectionPoint); Now wheneve...

etwa ein Jahr vor | 2

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Simulink Project Opening Speeds
You might find some of the ideas in the following article useful. It's a bit old, but some of the suggestions might possibly sti...

mehr als ein Jahr vor | 0

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Axes box incompletely copied to clipboard
@Matt J export_fig(gcf,'-transparent','-clipboard') v3.28 now supports figure transparency for image fomats as well as EMF (wher...

mehr als ein Jahr vor | 2

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Get path from running script
mfilename('fullpath') does indeed return the full path to the currently-running script file, at least on the latest Matlab relea...

mehr als ein Jahr vor | 1

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how to change java icon (after convert GUI to exe file) to my project logo
The icon image needs to be placed next to the executable when you run the program, otherwise it will not be found and the defaul...

mehr als ein Jahr vor | 0

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Increase Java Heap Space for a appliction created by Matlab Application Compiler
You can add a java.opts file to the "Files installed for your end users" section, at the bottom of the deploy-tool window, next ...

mehr als ein Jahr vor | 0

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Java Icon after packaging standalone application
The icon image needs to be placed next to the executable when you run the program, otherwise it will not be found and the defaul...

mehr als ein Jahr vor | 0

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Compiler Question - Figure Docking
The Matlab Desktop is not available in compiled application, and for a very good reason - otherwise users could compile and dist...

mehr als ein Jahr vor | 1

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Docking a figure in application
The ability to dock figures in deployed programs is available, but is intentionally blocked by the Matlab compiler. I think this...

mehr als ein Jahr vor | 1

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Figure docking not working when an application is created using the MATLAB Compiler
The ability to dock figures in deployed programs is available, but is intentionally blocked by the Matlab compiler. I think this...

mehr als ein Jahr vor | 0

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Compiled application can't dock figures
The ability to dock figures in deployed programs is available, but is intentionally blocked by the Matlab compiler. I think this...

mehr als ein Jahr vor | 0

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GPU speed up for pcg() is disappointing
The gpuArray version of pcg has not been updated since 2018, so it is somewhat lagging compared to the CPU version. Precondition...

mehr als ein Jahr vor | 0

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Can you programmatically delete text in the editor window?
You can simply update the activeFile.Text property based on your code logic. For example: activeFile.Text = [activeFile.Text(1:...

mehr als ein Jahr vor | 2

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Requirement to speed up MATLAB Simulink file
Use the Profiler to discover where your performance hotspots are. It is quite possible that you will discover that it's not in y...

fast 2 Jahre vor | 0

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Matlab class property specification
Starting in 16a, you can use the new syntax as long as you don't specify the dimensions. In other words, the following 2 propery...

etwa 2 Jahre vor | 2

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Any simple ideas to improve performance of reading long (10 GB scale) .csv file?
If you need to read the entire file for some reason, then try to use parallelization with multiple workers. Each worker would re...

etwa 2 Jahre vor | 0

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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

mehr als 2 Jahre vor | 0

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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...

mehr als 2 Jahre vor | 0

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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...

mehr als 2 Jahre vor | 1

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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.

mehr als 2 Jahre vor | 1

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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...

mehr als 2 Jahre vor | 0

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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-...

etwa 3 Jahre vor | 3

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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...

mehr als 3 Jahre vor | 0

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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...

mehr als 3 Jahre vor | 2

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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...

mehr als 3 Jahre vor | 0

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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 ...

mehr als 3 Jahre vor | 1

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Yair Altman

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