相包裹-Matlab波特图

Question

A quick question!

I am using MATLAB R2015b. While using bode plot with option 'PhaseWrapping' --> on I am getting the limit from 0 to 360 instead of convention -180 to 180. I can't find anything on the net. Any answers would be much appreciated.

Thanks!

Minimum Working Example

    PP                  = bodeoptions;
    PP.Grid             = 'on';
    PP.XLabel.FontSize  = 12;
    PP.YLabel.FontSize  = 12;
    PP.Title.FontSize   = 12;
    PP.Xlim             = [1e-3 1e3];
    PP.PhaseWrapping    = 'on';

    s = tf('s');
    temp = 1/s;

    bode(temp,PP);

What this should give me is a phase of -90 but it gives me 270 .

Answer 1

Bode plots have also the option of adjust phase offsets. You can either find the option in the right-click menu--> Properties... --> Options or adjust it via

PP.PhaseMatching = 'on'
PP.PhaseMatchingFreq = 1
PP.PhaseMatchingValue = -90

In 2016b MWE shows -90 by default though.