2.2-contouring
%matplotlib inline
from pyvista import set_plot_theme
set_plot_theme('document')Contouring¶
Generate iso-lines or -surfaces for the scalars of a surface or volume.
3D meshes can have 2D iso-surfaces of a scalar field extracted and 2D surface meshes can have 1D iso-lines of a scalar field extracted.
from pyvista import examples
import pyvista as pv
import numpy as npIso-Lines¶
Let's extract 1D iso-lines of a scalar field from a 2D surface mesh.
mesh = examples.load_random_hills()
contours = mesh.contour()
p = pv.Plotter()
p.add_mesh(mesh, opacity=0.85)
p.add_mesh(contours, color="white", line_width=5)
p.show()Loading...
Iso-Surfaces¶
Let's extract 2D iso-surfaces of a scalar field from a 3D mesh.
mesh = examples.download_embryo()
contours = mesh.contour(np.linspace(50, 200, 5))
p = pv.Plotter()
p.add_mesh(mesh.outline(), color="k")
p.add_mesh(contours, opacity=0.25, clim=[0, 200])
p.camera_position = [(-130.99381142132086, 644.4868354828589, 163.80447435848686),
(125.21748748157661, 123.94368717158413, 108.83283586619626),
(0.2780372840777734, 0.03547871361794171, 0.9599148553609699)]
p.show()Loading...