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Technical articles

Technical articles

Additional license data

Additional meta-data about installed toolboxes can be retrieved in Matlab.

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February 15, 2017 6 Comments

Parsing XML strings

Matlab’s xmlread function cannot process XML data directly, but this can easily be overcome.

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February 1, 2017 8 Comments

Quirks with parfor vs. for

Parallelizing loops with Matlab’s parfor might generate unexpected results. Users beware!

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January 5, 2017 7 Comments

Checking status of warning messages in MEX

Undocumented Mex functions can be used to extract the state of Matlab warnings in run-time.

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December 21, 2016 No Comments

Password & spinner controls in Matlab GUI

Password fields and spinner controls can easily be embedded in Matlab GUIs.

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December 14, 2016 4 Comments

Sending email/text messages from Matlab

Sending emails and SMS (text) messages from Matlab is easy, once you know a few quirks.

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December 7, 2016 6 Comments

Afterthoughts on implicit expansion

The new implicit expansion feature of Matlab R2016b can break user code in unexpected ways.

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November 30, 2016 12 Comments

Speeding up Matlab-JDBC SQL queries

Fetching SQL ResultSet data from JDBC into Matlab can be made significantly faster.

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November 16, 2016 6 Comments

Working with non-standard DPI displays

Matlab uses logical (scaled) pixel positions. With high-DPI displays, this might cause problems, but it is easy to retrieve the physical (unscaled) pixel values.

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November 9, 2016 6 Comments

uigetfile/uiputfile customizations

A file-selector dialog window that includes an integrated preview panel is shown and explained.

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November 3, 2016 8 Comments

Icon images & text in Matlab uicontrols

HTML can be used to add image icons to Matlab listbox and popup (drop-down) controls.

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September 28, 2016 6 Comments

Aligning uicontrol contents

Matlab uicontrols can often be customized using plain HTML/CSS, without need for advanced Java.

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September 22, 2016 6 Comments

Customizing uifigures part 2

Matlab’s new web-based uifigures can be customized using custom CSS and Javascript code.

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September 7, 2016 2 Comments

Zero-testing performance

Subtle changes in the way that we test for zero/non-zero entries in Matlab can have a significant performance impact.

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August 31, 2016 5 Comments

AppDesigner's mlapp file format

MLAPP files created by AppDesigner can be inspected and manipulated outside AppDesigner.

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August 17, 2016 11 Comments

Customizing axes part 5 – origin crossover and labels

The axes rulers (axles) can be made to cross-over at any x,y location within the chart.

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July 27, 2016 6 Comments

Customizing uifigures part 1

Matlab’s new web-based uifigures can be customized in a variety of undocumented ways.

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July 21, 2016 12 Comments

Listbox selection hacks

Matlab listbox selection can be customized in a variety of undocumented ways.

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July 13, 2016 4 Comments

A few parfor tips

The parfor (parallel for) loops can be made faster using a few simple tips.

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July 6, 2016 6 Comments

Handling red Java console errors

Red Java errors are sometimes displayed in the Matlab console. They can be removed or avoided in a variety of means.

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June 29, 2016 6 Comments

MEX ctrl-c interrupt

An undocumented MEX function can help interrupt running MEX functions.

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June 15, 2016 5 Comments

Figure window customizations

Matlab figure windows can be customized in numerous manners using the underlying Java Frame reference.

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June 1, 2016 No Comments

rmfield performance

The performance of the builtin rmfield function (as with many other builtin functions) can be improved by simple profiling.

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May 25, 2016 5 Comments

Viewing saved profiling results

We can easily use saved profiling results to analyze, view and compare profiling results of multiple runs.

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May 18, 2016 No Comments

Transparent labels

Matlab labels can be set to a transparent background as well as padding.

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May 4, 2016 2 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
  • Yair Altman (6 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 (6 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 (9 days 21 hours ago): Yerlan – either use menuItem1.setEnabled(0) or set(menuItem1,'Enabled',0)
  • Manzn (9 days 23 hours ago): Thank you man! you saved me, when there was no more light 😀
  • Yerlan (11 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 (11 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 (13 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 (26 days 2 hours ago): very nice! work perfectly to me in MATLAB 2019a. thanks!!!
  • Jianfei (59 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 (65 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 (70 days 15 hours ago): Yair, the following didn’t work for me either: jh.setBorderPainted(false); Regards, Kim
  • Adil (72 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 (75 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 (80 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...
  • James (87 days 23 hours ago): Is there a way to change the location of the window? They pop up at random locations and the user has to chase them down.
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