Example to change the line width from the default:
For illustration, to change the line width from the default of 0.5 to 1.5:
As long as the Figure Window is open and this object handle is still valid, the width of the line will be increased.
Also the properties can be set in the original function call. For illustration, this will increase the line width as shown in figure.
>> hl = plot(x,y, 'Linewidth', 2.5);