my root locus plot wont show the datatip

i have a root locus plot here:

k = 1;
s = tf('s');
Gs = 1/(s^2+s);
Ks = k*(s+2)/(s+10);
sys = Gs*Ks/(1+Gs*Ks);
rlocus(sys);

But the problem is that, whenever i click on the line, the data won't display, just x and y coordinate. is there any fix to this?

Answer 1

[Kiran Felix Robert]

Hi Zain,

I assume that you are using the MATLAB live editor for root locus plot. This is a known issue, it is reported to the developers and the concerned people are looking into it.

One known workaround is to:

1. Create the root locus plot with either 'rlocus' command or the 'rlocusplot' command from a MATLAB script file or the command line.

2. Then use data cursor to examine various points of the root locus plot.

Kiran Felix Robert

[Zain Ahmed]

I wan't the developers to fix that issue immediately

[Matteo Ceriotti]

The fact that the "interactive" features of some plots such as Bode diagrams, Root loci and p-z maps do not work in the live editor is big deal for me. One of the advantages of the live editor is to show step-by-step how the code works to students, and interactively explore results and changes, but this is a major feature which is lacking.

[Mansouri Hajar]

October 2021 and it still doesn't work !!

[Francisco Arredondo]

hey so i was dealing with the same problem, copy the code into a script file, it worked for me

[Junyao Liu]

Hi Kiran, is there any update on this for r2022b? The data still don't show besides (X,Y) in the live editor, and I just don't like to use .m if I can help it

[Henry Asa]

Any estimates/updates on when this will be fixed? I prefer using live scripts but this functionality is critical.

[sihan zhang]

still not working on the R2022b version

Answer 2

[Ahmad]

clear all;clf;

numerator = [1 4];

denominator = [1 8 7 0];

sys = tf(numerator, denominator);

rlocus(sys);

grid on;

title('Root-Locus L(s) = s+4/s^3+8s^2+7s')