Data Sets

Data Sets#

Datasets are any spatially referenced information and usually consist of geometrical representations of a surface or volume in 3D space. In VTK, this superclass is represented by the vtk.vtkDataSet abstract class.

In VTK, datasets consist of geometry, topology, and attributes to which PyVista provides direct access:

  • Geometry is the collection of points and cells in 2D or 3D space.

  • Topology defines the structure of the dataset, or how the points are connected to each other to form a cells making a surface or volume.

  • Attributes are any data values that are associated to either the points or cells of the dataset

All of the following data types are listed subclasses of a dataset and share a set of common functionality which we wrap into the base class pyvista.DataSet.

For additional details regarding PyVista’s data model, please see PyVista Data Model.

Dataset API Reference#

The pyvista.DataSet class holds attributes that are common to all spatially referenced datasets in PyVista. This base class is analogous to VTK’s vtk.vtkDataSet class.

The pyvista.DataSetAttributes class contains the methods to access arrays associated with cells, points, and the DataSet in general (fields).

pyvista.DataSet(*args, **kwargs)

Methods in common to spatially referenced objects.

pyvista.DataSetAttributes(vtkobject, ...)

Python friendly wrapper of vtk.DataSetAttributes.

pyvista.core.dataset.ActiveArrayInfo(...)

Active array info class with support for pickling.

pyvista.core.utilities.arrays.FieldAssociation(value)

Represents which type of vtk field a scalar or vector array is associated with.