Why do I get a Simulation Data Inspector (SDI) plot that only shows one circle/point in R2021b?

Whatever signal I am logging, I see only one point that looks like a stem plot in Simulation Data Inspector (SDI).

If I keep SDI open during simulation, the stem point moves up and down. I also noticed that there was a "t=..." time display in the top right corner. I restarted MATLAB but this behavior doesn't seem to go away.

Answer 1

[MathWorks Support Team]

It appears that the subplot is configured as an array plot which is a new R2021b feature:https://www.mathworks.com/help/simulink/ug/view-multidimensional-signals-using-the-array-plot.html

To change an array plot back to a regular time plot, click the Layout button then select "Edit View". From the Visualization Gallery, drag and drop the "Time Plot" icon onto a subplot.

You can also use the following command to reset SDI completely:

>> Simulink.sdi.clearPreferences

See the following page to learn more about Simulink.sdi.clearPreferences:

https://www.mathworks.com/help/simulink/slref/simulink.sdi.clearpreferences.html