Combine Tables

This example will demonstrate how to to merge to vtkTable objects with the same number of rows into a single vtkTable.

This example demos PVGeo.filters.CombineTables

Please note that this example only works on version of PyVista>=0.22.0

import numpy as np
import pyvista as pv

from PVGeo.filters import CombineTables

Create some input tables

t0 = pv.Table()
t1 = pv.Table()

# Populate the tables
n = 100
titles = ('Array 0', 'Array 1', 'Array 2')
arr0 = np.random.random(n)  # Table 0
arr1 = np.random.random(n)  # Table 0
t0[titles[0]] = arr0
t0[titles[1]] = arr1
arr2 = np.random.random(n)  # Table 1
t1[titles[2]] = arr2
arrs = [arr0, arr1, arr2]

t0

Header	Data Arrays
Table Information N Rows 100 N Arrays 2	Name Type N Comp Min Max Array 0 float64 1 3.187e-03 9.550e-01 Array 1 float64 1 1.520e-03 9.970e-01

t1

Header	Data Arrays
Table Information N Rows 100 N Arrays 1	Name Type N Comp Min Max Array 2 float64 1 2.503e-03 9.949e-01

# Now use the `CombineTables` filter:
output = CombineTables().apply(t0, t1)
output

Header	Data Arrays
Table Information N Rows 100 N Arrays 3	Name Type N Comp Min Max Array 0 float64 1 3.187e-03 9.550e-01 Array 1 float64 1 1.520e-03 9.970e-01 Array 2 float64 1 2.503e-03 9.949e-01

# Here I verify the result
for i in range(len(titles)):
    arr = output[titles[i]]
    assert np.allclose(arr, arrs[i], rtol=0.0001)