There is currently no property within MATLAB that allows this toolbar to be displayed by default.
To work around this issue follow the steps listed below:
1. Create the following function within any directory on the MATLAB path:
function defaultplotedittoolbar
plotedit({'plotedittoolbar',gcf,'toggle'})
2. Add the following line to your startup.m file (If startup.m does not exist, create it and place it in any directory on the MATLAB path).
set(0,'defaultfigurecreatefcn','defaultplotedittoolbar')
Now, the Plot Edit Toolbar will be displayed in a figure by default.
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