Failure to run the nonlinear_resistor_on example

[hurak]

Hi,
after having bought your 2020 book on Piecewise Affine Control: Continuous Time, Sampled Data, and Networked Systems, I wanted to reproduce the examples you give in the book. Then I have learnt about the PWATOOLS toolbox for Matlab. Although it seems not updated for a few years, I installed it in my recent Matlab (R2022a) and tried running the basic example of a nonlinear resistor you describe in Chapter 4 of the manual and for which you also give a convenience script in the examples directory.

Stepping into the directory I run in Matlab

>> nonlinear_resistor_non
Unrecognized field name "Resolution".

Error in PWAComp (line 21)
nlsys.Resolution    = model.Resolution;

Error in nonlinear_resistor_non (line 41)
    [pwainc, pwasys, nlsys]=PWAComp(model);

Indeed, the created model has no such field:

>> model

model = 

  struct with fields:

                          A: [2×2 double]
                        aff: [2×1 double]
                         Bx: [2×1 double]
                     Domain: {[-20 20]  [-20000 20000]}
                         fx: @resistor_nonlinearity
            NonlinearDomain: [2×1 double]
                        xcl: [2×1 double]
                        mtd: 'Multiresolution'
                         NR: 3
                      Rstar: [0.2000 0.6000]
    NonlinearStateEquations: [0 1]

This suggests that it is perhaps not related to my using a newer Matlab version than you guys used back in 2011.

Is there some easy fix for this?

And a more general question: is the use of the toolbox still recommended? Perhaps it was just some academic-paper accompanying code, which was not intended for the use by the public. It looks like quite a lot of work has already been invested into the toolbox. Preparing a grad course on hybrid systems, I am now looking around for suitable tools.