How to set default legend properties in R2017a?

I have seen solutions to this question that seem to no longer apply for R2017a.

The 'Legend' Illustration Object has a 'AutoUpdate' Text Property that is breaking all the plot routines that I have written over the years. I would very much like to set the default to 'off'.

The following does not work:

>> set(groot,'LegendAutoUpdate','off')
Error using matlab.ui.Root/set
There is no LegendAutoUpdate property on the Root class. 

>> set(groot,'factoryLegendAutoUpdate','off')
Error using matlab.ui.Root/set
Factory properties can only be queried, not set. 

>> set(0,'LegendAutoUpdate','off')
Error using set
There is no LegendAutoUpdate property on the Root class.

I don't want to wait until I instantiate and have a Legend handle.

I want to change the default.

[David Christhilf]

This works:

set(0,'DefaultLegendAutoUpdate','off')

[David Christhilf]

Yes this works once a session is started, but it gets overridden if I put it in the startup.m script.

This seems to be a "feature that won't go away". :-(

[Walter Roberson]

It is not possible to permanently change default properties; startup script is about the closest you can get.

I do not know why it would not work in a startup script through -- unless perhaps you have multiple startup scripts ?

[David Christhilf]

I just have the one startup.m script. It changes from the default directory to a directory for SVN working directories.

I put the following in, both before and after the change of directory.

MATLAB code:
disp('Setting ''DefaultLegendAutoUpdate'' to ''off'' now.')
set(0,'DefaultLegendAutoUpdate','off')
get(0,'DefaultLegendAutoUpdate')

The comment never displays, even though the 'pwd' does display.

MATLAB code:
cd ../../svnWork
addpath('.')
pwd

So for now I just add the set(0,'DefaultLegendAutoUpdate','off') command to the beginning of any plot script that is giving me trouble, so that's ok. After the first occurrence, it isn't needed again anyway.

I tried putting a 'clean-up' routine after the plotting, but changing 'AutoUpdate' to 'off' doesn't turn off the added items. That actually makes sense.

[KAE]

The earlier solution works for me: if I execute the following line at either the command line or in my startup.m file,

set(0,'DefaultLegendAutoUpdate','off')

then I don't get 'data1', 'data2' entries for the code in my question here. I will add that I am running R2018b.

[blues]

Thanks for this trick. It appears in version R2019b as well.