Why does the BODE function in the Control System Toolbox not propagate the line width of my axes to the phase plot?

I create axes on a figure and set the line width of the axes to 2.0 by typing the following at the MATLAB command prompt:

set(gca,'linewidth',2.0)

Then, I make a Bode plot of a system, by the following command:

bode(tf([1 1],[1 2 1]));

My BODE plot only retains the line width of my axes lines on the magnitude plot, but my phase plot axis line width has the default value of 0.5.

Answer 1

[MathWorks Support Team]

This enhancement has been incorporated in Release 2006a (R2006a). For previous product releases, read below for any possible workarounds:

This has been verified as a bug in the Control System Toolbox in the way that BODE handles current axes properties.

Currently, to work around this issue, try the following directly after using the BODE function:

current_axis = gca;

h = findall(gcf,'type','axes','visible','on');

set(h,'linewidth',2.0);

axes(current_axis);