map_to_regions

Maps pore values from a network onto the image from which it was extracted

import matplotlib.pyplot as plt
import numpy as np
import openpnm as op

import porespy as ps

ws = op.Workspace()
ws.settings["loglevel"] = 50
np.random.seed(10)
ps.visualization.set_mpl_style()

[00:39:22] ERROR    PARDISO solver not installed, run `pip install pypardiso`. Otherwise,          _workspace.py:56
                    simulations will be slow. Apple M chips not supported.                                         

Create image and extract network

im = ps.generators.blobs(shape=[400, 400], porosity=0.6)
ps.imshow(im)
snow_output = ps.networks.snow2(im, voxel_size=1)
pn = op.io.network_from_porespy(snow_output.network)

Plot the pore network

fig, ax = plt.subplots()
op.visualization.plot_connections(pn, c="w", linewidth=2, ax=ax)
op.visualization.plot_coordinates(pn, c="w", s=100, ax=ax)
plt.imshow(snow_output.regions.T, origin="lower")
plt.axis("off");

Now assign some values to the network:

pn["pore.values"] = np.random.rand(pn.Np)

And now assign these values to the image regions:

reg = ps.networks.map_to_regions(regions=snow_output.regions.T, values=pn["pore.values"])
plt.imshow(reg, origin="lower");