[SOLVED] error while creating a 2-tuple as input for model.simulate() of fmu model with pyfmi

error while creating a 2-tuple as input for model.simulate() of fmu model with pyfmi

I have a fmu created in gt-suite. I am trying to work with it in python using python PyFMI package. My code

from pyfmi import load_fmu
import numpy as np

model = load_fmu('AHUPIv2b.fmu')

t = np.linspace(0.,100.,100) 
u = np.linspace(3.5,4.5,100)
v = np.linspace(900,1000,100)
u_traj = np.transpose(np.vstack((t,u)))
v_traj = np.transpose(np.vstack((t,v)))

input_object = (('InputVarI','InputVarP'),(u_traj,v_traj))
res = model.simulate(final_time=500, input=input_object, options={'ncp':500})

res = model.simulate(final_time=10)

model.simulate takes input as one of its parameters, Documentation says

input --
        Input signal for the simulation. The input should be a 2-tuple
        consisting of first the names of the input variable(s) and then
        the data matrix.

'InputVarI','InputVarP' are the input variables and u_traj,v_traj are data matrices.

My code gives an error gives an error -

TypeError: tuple indices must be integers or slices, not tuple

Is the input_object created wrong? Can someone help with how to create the input tuples correctly as per the documentation?

Solution

The input object is created incorrect. The second variable in the input tuple should be a single data matrix, not two data matrices.

The correct input should be:

data = np.transpose(np.vstack((t,u,v)))
input_object = (['InputVarI','InputVarP'],data)