Using pyomo module in Matlab

Hi everyone,

I'm currtly working on a project involving pyomo in matlab. I've managed to use other python modules in matlab (numpy for example), in different ways without any problem. It seems I've also succeed in creating a pyomo ConcreteModel from matlab. However, I can't get RangeSet() to work. I'll explain what I've tired and I hope someone can see what I've done wrong.

Fisrt with line command:

mod = py.importlib.import_module('pyomo');

py.RangeSet()           % Option 1
py.pyomo.RangeSet()     % Option 2
py.mod.RangeSet()       % Option 3

None of this is working, each time I get the same error 'Unable to resolve the name py.RangeSet.'

Second I've try calling a pyhton file (testRangeFile.py):

mod = py.importlib.import_module('pyomo');
test = py.importlib.import_module('testRangeFile');

test.testRange(2)
test.testRangeFile.testRange(2)

My pyhton fuction for testing being:

def testRange(value):
    from pyomo.environ import pyomo     % also tried importing outside def
    return pyomo.RangeSet(value)

In that case the error is 'Unrecognized method, property, or field 'testRange' for class 'py.module'.'

I don't know what else to try, and I can't figure out why this is not working when the other modules/functions are. If someone as an explanation so I uderstand best how this works it would help a lot.

Thanks for reading :)

PS: I'm using 2020b

[hossein jbn]

Hi my friend

i would like to add pyomo in matlab but i don't know how i can do it. please guide me. to contact me you can send an email to [e-mail].

thanks a lot

Answer 1

[Ileperff]

I did'nt managed to solve this problem. But in case some faces the same issue, I avoided it by recreating RangeSet() on my own (which is quite easy) and then call it in Matlab:

def MyRangeSet(value):
    array = []
    for i in range(1, value+1):
        array.append(i)
    return array