Create a simple PyVista PolyData from a set of points.

create_surf.py

"""
Basic example to show how to turn a set of points into a surface, assign values,
and plot it using PyVista.

Points are stored in "data.csv". Points are structured and it's possible, though
slightly harder, to create a pyvista.StructuredGrid using them. Instead, its
much easier to simply to use the delaunay_2d filter.

"""
import numpy as np
import pyvista

# load data
data = np.loadtxt('data.csv', skiprows=1, delimiter=',')
points = data[:, :3]
values = data[:, -1]

# create point cloud
pc = pyvista.PolyData(points)
pc['values'] = values

# create a surface
mesh = pc.delaunay_2d()

# plot it
mesh.plot(
    cmap='jet', cpos='xy', show_scalar_bar=False, background='w'
)

data.csv