pyvista.PolyData.n_verts

property PolyData.n_verts: int

Return the number of vertices.

A vertex is a 0D cell, which is usually a cell that references one point, a vtkVertex. It can also be a vtkPolyVertex. See pyvista.PolyData.n_points for the more common measure.

Examples

Create a simple mesh containing just two points and return the number of vertices. By default, when constructing a PolyData with points but no cells, vertices are automatically created, one per point.

>>> import pyvista as pv
>>> mesh = pv.PolyData([[1.0, 0.0, 0.0], [1.0, 1.0, 1.0]])
>>> mesh.n_points, mesh.n_verts
(2, 2)

If any other cells are specified, these vertices are not created.

>>> import pyvista as pv
>>> mesh = pv.PolyData(
...     [[1.0, 0.0, 0.0], [1.0, 1.0, 1.0]], lines=[2, 0, 1]
... )
>>> mesh.n_points, mesh.n_verts
(2, 0)