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Technical articles

Technical articles

Undocumented Profiler options part 3

An undocumented feature of the Matlab Profiler can report call history timeline – part 3 of series.

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September 26, 2012 4 Comments

Undocumented Profiler options part 2

Several undocumented features of the Matlab Profiler can make it much more useful – part 2 of series.

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September 19, 2012 1 Comment

Matlab installation take 2

A list of suggested config changes to the default Matlab installation is detailed.

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September 12, 2012 32 Comments

File deletion memory leaks, performance

Matlab’s delete function leaks memory and is also slower than the equivalent Java function.

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September 5, 2012 7 Comments

Pause for the better

Java’s thread sleep() function is much more accurate than Matlab’s pause() function.

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August 29, 2012 17 Comments

Speeding up compiled apps startup

The MCR_CACHE_ROOT environment variable can reportedly help to speed-up deployed Matlab executables.

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August 22, 2012 32 Comments

ScreenCapture utility

The ScreenCapture utility uses purely-documented Matlab for capturing a screen region as an image from within Matlab.

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August 15, 2012 35 Comments

Bold color text in the Command Window

Matlab Command Window text can be formatted *bold* since R2011b.

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August 8, 2012 2 Comments

xlswrite for Mac, Linux

Several Matlab utilities enable reading/writing spreadsheet data (including XLS files) in Macs, Linux.

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August 2, 2012 9 Comments

Splash window for deployed applications

Deployed (compiled) Matlab applications take a long time to load. I present a splash window that loads immadiately, solving this problem.

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July 26, 2012 No Comments

Waiting for asynchronous events

The Matlab waitfor function can be used to wait for asynchronous Java/ActiveX events, as well as with timeouts.

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July 18, 2012 33 Comments

Trapping warnings efficiently

warnings can be trapped in a try-catch block just like regular errors. This articles explains how.

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July 11, 2012 10 Comments

Using Groovy in Matlab

Groovy code can seamlessly be run from within Matlab.

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July 4, 2012 8 Comments

Multi-line uitable column headers

Matlab uitables can present long column headers in multiple lines, for improved readability.

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June 27, 2012 19 Comments

The Java import directive

The import function can be used to clarify Java code used in Matlab.

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June 13, 2012 No Comments

Undocumented scatter plot jitter

Matlab’s scatter plot can automatically jitter data to enable better visualization of distribution density.

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June 6, 2012 4 Comments

Internal Matlab memory optimizations

Copy-on-write and in-place data manipulations are very useful Matlab performance improvement techniques.

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May 30, 2012 7 Comments

Array resizing performance

Several alternatives are explored for dynamic array growth performance in Matlab loops.

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May 23, 2012 7 Comments

Preallocation performance

Preallocation is a standard Matlab speedup technique. Still, it has several undocumented aspects.

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May 16, 2012 30 Comments

Customizing menu items part 3

Matlab menu items can easily display custom icons, using just a tiny bit of Java magic powder.

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May 9, 2012 39 Comments

Customizing menu items part 2

Matlab menu items can be customized in a variety of useful ways using their underlying Java object.

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May 2, 2012 14 Comments

Customizing menu items part 1

Matlab menus can be customized in a variety of undocumented manners – first article of a series.

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April 25, 2012 6 Comments

Setting axes tick labels format

Matlab plot axes ticks can be customized in a way that will automatically update whenever the tick values change.

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April 18, 2012 18 Comments

Specialized Matlab plots

The new MathWorks Plot Gallery provides access to some plotting examples on the File Exchange. Numerous others are available, extending the customizability of Matlab graphics.

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April 11, 2012 5 Comments

Spy Easter egg take 2

The default spy Easter-egg image in the spy function has recently changed.

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April 4, 2012 6 Comments
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Accelerating MATLAB Performance book
Recent Posts

Speeding-up builtin Matlab functions – part 3

Improving graphics interactivity

Interesting Matlab puzzle – analysis

Interesting Matlab puzzle

Undocumented plot marker types

Matlab toolstrip – part 9 (popup figures)

Matlab toolstrip – part 8 (galleries)

Matlab toolstrip – part 7 (selection controls)

Matlab toolstrip – part 6 (complex controls)

Matlab toolstrip – part 5 (icons)

Matlab toolstrip – part 4 (control customization)

Reverting axes controls in figure toolbar

Matlab toolstrip – part 3 (basic customization)

Matlab toolstrip – part 2 (ToolGroup App)

Matlab toolstrip – part 1

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Recent Comments
  • Josh (1 day 17 hours ago): Dear Yair, Small typo; you wrote >>Move lines up or down – CTRL + ALT + UP or DOWN allows you to move selected lines up or down but it’s actually ALT+SHIFT then UP/DOWN...
  • Yair Altman (8 days 12 hours ago): You can try to increase the Java heap memory size in the Matlab preferences (General => Java Heap Memory). Any changes to the settings will only take effect after restarting...
  • Thomas (8 days 13 hours ago): Hello, thanks for sharing! I currently receive the following memory error message when using savezip with a big object (Matlab R2020b, Windows 10). Error using...
  • Yair Altman (11 days 20 hours ago): Yerlan – either use menuItem1.setEnabled(0) or set(menuItem1,'Enabled',0)
  • Manzn (11 days 23 hours ago): Thank you man! you saved me, when there was no more light 😀
  • Yerlan (13 days 4 hours ago): Hello Mr. Altman, how can I disable menu items in the context menu? E.g. when I am trying to do this: menuItems = jmenu.getSubElements; menuItem1 = menuItems(1);...
  • Yair Altman (13 days 20 hours ago): Thanks for the note Eric – you forgot the crucial call to jTable.setLabelTable(labelTabl e) – I added it into your code snippet above.
  • Erik (15 days 7 hours ago): Thank you for this — I don’t know if this has been mentioned anywhere else before, but it could be useful to mention how to add custom labels to a jslider. I did the...
  • turhv (28 days 2 hours ago): very nice! work perfectly to me in MATLAB 2019a. thanks!!!
  • Jianfei (61 days 6 hours ago): I have tried the MathWorks CheckBoxList in Matlab 2015b. For whatever the reason, I can’t change the font properties. I can change the font color, but changing font properties...
  • Donato Coppola (67 days 1 hour ago): Hi Yair, I have a problem with the double format. When I run the treeTable function, the numbers in double format cells are displayed with comma as decimal separator. How can...
  • Kim (72 days 15 hours ago): Yair, the following didn’t work for me either: jh.setBorderPainted(false); Regards, Kim
  • Adil (74 days 17 hours ago): Thank you for the blog, it was useful for me. I have a file named App_project.mlapp.zip and when I extract it through Winzip it gives all the files exactly as you described above. I...
  • Mr Ashley Trowell (77 days 2 hours ago): Thank you so much for this analysis. Also, I find it somewhat horrifying. The take away seems to be to use && / || and NOT and / or. Thanks a bunch! ~Ashley
  • Matt (82 days 4 hours ago): Late reply I know, but you can call custom shortcuts with alt-#. Hold down Alt to see what number is assigned to the shortcuts you’ve created. Now if there was a way to create a...
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