create an indefinite progress bar in matlab

To create an indefinite progress bar in MATLAB, first create a GUI window using the uifigure function. Then, add a uibuttongroup to the window and position it according to your preferences using the Position property. Add a uilabel to the uibuttongroup and set its Text property to the message you want to display. Finally, add a uilamp to the uibuttongroup and set its Color property to represent the progress of the task in question.

Here's a sample code for the same:

main.m
f = uifigure;
bg = uibuttongroup(f,'Position',[100 100 150 150]);
label = uilabel(bg,'Position',[10 100 100 22],'Text','Processing... Please wait');
lamp = uilamp(bg,'Position',[10 50 120 22],'Color','green');
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In this code, f is the object created by uifigure, bg is the uibuttongroup, label is the uilabel with "Processing...Please wait" message and lamp the uilamp representing the progress.

You can customize the code further by adding a timer, progress bar or other indicators to make the bar more interactive.