Marcel – 12 years and ~25 releases since I wrote this article, it is no surprise at all that some things no longer work the same way. In fact, the surprising thing is that many things still do work the same way, not the reverse. In this specific case, you’d need to rerun the profiler to see where the bottlenecks are in the new code, similar to what I described in the article.

Also see my response above to this matter.

I am trying to set the legend to Static, but this command seems not to work in R2022a anymore:

set(gca,'LegendColorbarListeners',[]);

Any ideas?
THANKS / marcel

@Kavya – I’m afraid that the slowness of uifigures (created by App-Designer) is due to inherent limitations in the uifigures, not to the dynamic/static nature of the colorbar or legend. It’s true that static colorbars/legend will improve the speed a bit, but this will most probably be overshaddowed by uifigure’s underlying slowness.

MathWorks is well aware of the slowness of uifigures and are actively improving this aspect in each new Matlab release, so upgrading to the latest Matlab release might help. However, note that uifigures are slower than Java-based figures even today (R2018b). Hopefully this performance gap will finally be closed in an upcoming Matlab release.

I’m working in my project and I want to draw 2 line in one axis, so I want to use set() function but I don’t know how to code, Anyone had this problem please let me know.

Thanks in advance

Thanks Yair, appreciate the response. I had a bug in setting static axis limits for the plot. I was not setting them on the plot with the legend (but rather another plot mistakenly). I set static limits by manually calculating my own max and min for x- and y-values. Once this was corrected, this got rid of all the legend update calls. It reduced the number of function calls as enumerated by profile(‘info’) from about 90 to 5, and time to update the plot (using set on XData and YData in all cases) from ~0.20 seconds to ~0.02 seconds, a 10x improvement. Persistence! Thanks, Yair.

@Alex – you can try the following in R2014b onward:

my_ax.AutoListeners__ = {};

Note that there are less risky alternatives for disabling legend for specific plot lines, for example:

hasbehavior(hPlotLine,'legend',false);

as described here: http://undocumentedmatlab.com/blog/handle-graphics-behavior

set(my_ax, 'LegendColorbarListeners',[]);  % my_ax is the axes where the legend is
Error using matlab.graphics.axis.Axes/set
There is no LegendColorbarListeners property on the Axes class.

However, if I change it to setappdata , that works: setappdata(my_ax, ‘LegendColorbarListeners’,[]). I can also do the other two calls with setappdata, but they don’t seem to help performance at all. I set them before and after making the legend and also at beginning of my ‘update’ function, to no avail — still a whole bunch of slow legend updates. Any ideas to make static legend in 2014b?

@chfakht – I assume that there is some programmatic or algorithmic bug in your program. From what you describe, it seems that the problem is not in the code performance (speed), but rather in the code correctness. If you’d like me to help you debug your program, contact me by email for a consulting offer.