This enhancement has been incorporated in Control System Toolbox 8.2 (R2008b). For previous product releases, read below for any possible workarounds:
The reason for the loss of functionality to edit the Bode and Transfer function Line properties using the Figure Toolbar is the new organization structure of the graphics objects. While in previous releases the Line Objects were direct children of the respective Axes, in the current release, the Line Objects are children of a HGGROUP object, which in turn is the child of the Axes.
To access the Line object properties from the command line, refer to the sample MATLAB code shown below:
clear all
close all
clc
g = tf([1 0.1 7.5],[1 0.12 9 0 0]);
bode(g)
h.axes = get(gcf, 'Children');
h.axes1_children = get(h.axes(1), 'Children');
h.axes1_grandchildren = get(h.axes1_children(1), 'Children');
set(h.axes1_grandchildren, 'LineWidth', 2)
Best Answer