Error while running the lotka_volterra_pe.py example

[ankur-gupta]

Hi, I used to be able to run the lotka_volterra_pe.py example but it seems to throw this error now:

and where phi is defined by
y[0] = x[0]
y[1] = x[1]
---------------------------------------------------------------------------
NotImplementedError                       Traceback (most recent call last)
/home/ankur/toolbox/numerical-software-examples/examples/casiopeia/example.py in <module>()
     62
     63 pe = cp.pe.LSq(system = system, time_points = T, xinit = yN, \
---> 64     ydata = yN, wv = wv, discretization_method = "collocation")
     65
     66 pe.run_parameter_estimation()

...
...
...

NotImplementedError: Wrong number or type of arguments for overloaded function 'Function_map'.
  Possible prototypes are:
    map(self,int,str)
    map(self,str,str,int,[int],[int],dict)
    map(self,str,str,int,[str],[str],dict)
  You have: '(Function,[DM|np.array(float)|MX])'

I am running casiopeia 0.2.0 and casadi version 3.2.0 on a Ubuntu 17.04. I would be grateful if you could take a look and help me.

[adbuerger]

Hi again! I did not yet find the time to get casiopeia working with CasADi 3.2.0, for the moment you would need to use CasADi 3.1.0 to make it work. Does that solve your problem?

[ankur-gupta]

Thanks, I tested it out with casadi 3.1.1 and that worked! Perhaps the interface changed in casadi v3.2.3.