import os
import discretisedfield as df
test_filename = os.path.join(
"..", "discretisedfield", "tests", "test_sample/", "skyrmion.omf"
)
f = df.Field.fromfile(test_filename)
f.mesh.n
(20, 20, 1)
f.plane("z").angle.mpl_scalar(cmap="viridis", filter_field=f.norm)
f.plane("z").angle.mpl_scalar(lightness_field=f.z, filter_field=f.norm)