anyway to convert directed networks to undirected network

[ChiWeiOng]

Dear all,

I am a newbie trying to run openpnm. I am facing problem on running a function on directed network when I want to assign viscosity value to a variable, however, I am facing an error on running it on the directed network.

any function or tools I can convert directed network to undirected network in order to do it?

import numpy as np
import openpnm as op
op.visualization.set_mpl_style()
from openpnm.io import network_from_csv

print(op.__version__)

pn= network_from_csv('syntheticnetworkv2.csv')
print(pn)

ax = op.visualization.plot_coordinates(pn)
ax = op.visualization.plot_connections(pn, ax=ax)
water = op.phase.Water(network=pn, name="water")

print(water)
print(water['pore.viscosity'])

R = pn['throat.diameter']/2
L = pn['throat.length']
mu = water['throat.viscosity'] 
water['throat.hydraulic_conductance'] = np.pi*R**4/(8*mu*L)
print(water['throat.hydraulic_conductance'])

The error showed me that

  File "/home/user/Desktop/graphynetwork/directed.py", line 27, in <module>
    mu = water['throat.viscosity']

  File "/home/user/anaconda3/lib/python3.8/site-packages/openpnm/phase/_phase.py", line 103, in __getitem__
    vals = self.interpolate_data(element + '.' + prop)

  File "/home/user/anaconda3/lib/python3.8/site-packages/openpnm/core/_base2.py", line 466, in interpolate_data
    values = from_neighbor_pores(self, prop='pore.'+prop, mode=mode)

  File "/home/user/anaconda3/lib/python3.8/site-packages/openpnm/models/misc/_neighbor_lookups.py", line 114, in from_neighbor_pores
    P12 = network.find_connected_pores(throats)

  File "/home/user/anaconda3/lib/python3.8/site-packages/openpnm/network/_network.py", line 435, in find_connected_pores
    pores = topotools.find_connected_sites(bonds=Ts, network=self,

  File "/home/user/anaconda3/lib/python3.8/site-packages/openpnm/topotools/_graphtools.py", line 37, in find_connected_sites
    return queries.find_connected_nodes(inds=bonds, **kwargs)

  File "/home/user/anaconda3/lib/python3.8/site-packages/openpnm/_skgraph/queries/_funcs.py", line 135, in find_connected_nodes
    raise Exception("This function is not implemented for directed networks")

Exception: This function is not implemented for directed networks

syntheticnetworkv2.csv

[jgostick]

Hi @ChiWeiOng
Sorry for the late response here. There is not specific function for this, but I agree that there should be! It's not hard to do though:

pn['throat.conns'] = np.sort(pn['throat.conns'], axis=1)

[ChiWeiOng]

Dear @jgostick .

oh ya, that's right. I will sort them out with your hints. Thank you very much!