Python Examples¶

Please see this page to learn how to setup your environment to use VTK in Python.

It would be appreciated if there are any Python VTK experts who could convert any of the c++ examples to Python!

VTK Classes Summary¶

This Python script, SelectExamples, will let you select examples based on a VTK Class and language. It requires Python 3.7 or later. The following tables will produce similar information.

• VTK Classes with Examples, this table is really useful when searching for example(s) using a particular class.

• VTK Classes with No Examples, please add examples in your area of expertise!

Tutorials¶

If you are new to VTK then these tutorials will help to get you started.

Hello World¶

Example Name	Description	Image
A hello world example	Cylinder example from the VTK Textbook and source code. A hello world example.

Simple Operations¶

Input and Output¶

Graph Formats¶

3D File Formats¶

Standard Formats¶

Input¶

Example Name	Description	Image
CSVReadEdit	Read and edit a CSV file using pandas and numpy.
CSVReadEdit1	Read and edit a CSV file using pandas and vtkDelimitedTextReader.
PolyDataToImageDataConverter	Converts PolyData to binary LabelImage.
ReadExodusData	A simple script for reading and viewing ExodusII data interactively.
ReadPLOT3D	Read CFD (computational fluid dynamics) data produced by PLOT3D.
ReadSLC	Read an SLC file.
ReadSTL	Read an STL file.
ReadUnstructuredGrid	Using vtkUnstructuredGridReader to read a (legacy) *.vtk file
ReadVTP	Read a VTK XML PolyData file.
TransientHDFReader	Read transient data written inside a vtkhdf file.

Importers¶

Example Name	Description	Image
3DSImporter	Import a 3D Studio scene that includes multiple actors.

Output¶

Example Name	Description	Image
WritePLY
WriteSTL

VTK Formats¶

Input¶

Example Name	Description	Image
ReadImageData	Read an image data (.vti) file
ReadPolyData	Read a polygonal data (.vtp) file

Output¶

Legacy VTK Formats¶

Example Name	Description	Image
ReadLegacyUnstructuredGrid	Read an unstructured grid that contains 11 linear cells.
WriteLegacyLinearCells	Write each linear cell into a legacy UnstructuredGrid file.
WriteXMLLinearCells	Write each linear cell into an XML UnstructuredGrid file (.vtu).

Image Format¶

Input¶

Example Name	Description	Image
HDRReader	Read a high-dynamic-range imaging file.
ReadDICOM	Read DICOM file.
ReadDICOMSeries	This example demonstrates how to read a series of DICOM images and scroll through slices

Output¶

Example Name	Description	Image
ImageWriter	Write an imagefile based on the file extension.

Geometric Objects¶

Example Name	Description	Image
Axes
Circle	A disk is shown however this can be modified to show a circle.
ColoredLines
Dodecahedron	Create a dodecahedron using vtkPolyhedron.
EllipticalCylinder	Create an elliptical cylinder using extrusion.
EllipticalCylinderDemo	Show the base and extrusion vector.
GeometricObjectsDemo
Planes	We create a convex hull of the planes for display purposes.
PlanesIntersection
PolygonIntersection	IntersectWithLine()
SourceObjectsDemo	Examples of source objects that procedurally generate polygonal models. These nine images represent just some of the capability of VTK. From upper left in reading order: sphere, cone, cylinder, cube, plane, text, random point cloud, disk (with or without hole), and line source. Other polygonal source objects are available; check subclasses of vtkPolyDataAlgorithm.

Cells¶

Example Name	Description	Image
Cell3DDemonstration	Sample objects are generated from the classes derived from vtkCell3D and displayed.
CellTypeSource	Generate tessellated cells.
ConvexPointSet	Generate a ConvexPointSet cell.
Hexahedron
LinearCellsDemo	Linear cell types found in VTK. The numbers define the ordering of the points making the cell.
LongLine	Manually create a polyline.
Point
PolyLine
Polygon
Polyhedron	Create an unstructured grid representation of a polyhedron (cube) and write it out to a file.
Pyramid
Quad
Tetrahedron
Triangle
TriangleStrip
Vertex

Sources¶

Example Name	Description	Image
Arrow
Cone
Cube	Manually build a polygonal cube.
Cube1	A nice simple example that demonstrates the operation of the VTK pipeline.
Cylinder
Disk	A circle with a hole in it.
EarthSource	Create the Earth.
Frustum
Line
OrientedArrow	Orient an arrow along an arbitrary vector.
OrientedCylinder	Orient a cylinder along an arbitrary vector.
Plane
PlatonicSolids	All five platonic solids are displayed.
PolyLine1	This example demonstrates how to create a polygon through several ordered points.
RegularPolygonSource
ShrinkCube	Applying shrink filter to an object.
Sphere
TessellatedBoxSource	Generate a box with tessellated sides.
TextActor	2D "HUD-type" text

Non Linear¶

Example Name	Description	Image
IsoparametricCellsDemo	Nonlinear isoparametric cell types in VTK.
QuadraticHexahedron	Create and tessellate a nonlinear cell.
QuadraticHexahedronDemo	Interactively adjust chord error.
QuadraticTetra	Create and tessellate a nonlinear cell.
QuadraticTetraDemo	Interactively adjust chord error.

Parametric Objects¶

Example Name	Description	Image
ParametricKuenDemo	Interactively change the parameters for a Kuen Surface.
ParametricObjectsDemo	Demonstrates the Parametric classes added by Andrew Maclean and additional classes added by Tim Meehan. The parametric spline is also included. Options are provided to display single objects, add backface, add normals and print out an image.
ParametricSuperEllipsoidDemo	Interactively change the parameters for a SuperEllipsoid Surface.
ParametricSuperToroidDemo	Interactively change the parameters for a SuperToroid Surface.

Implicit Functions and Iso-surfaces¶

Example Name	Description	Image
BooleanOperationImplicitFunctions	Demonstrate booleans of two different implicit functions
ContourTriangulator	Create a contour from a structured point set (image) and triangulate it.
CutWithScalars	Cut a surface with scalars.
DiscreteMarchingCubes	Generate surfaces from labeled data.
ExtractData	Implicit functions used to select data: Two ellipsoids are combined using the union operation used to select voxels from a volume. Voxels are shrunk 50 percent.
ExtractLargestIsosurface	Extract largest isosurface.
Hello	Implicit modelling used to thicken a stroked font.
IceCream	How to use boolean combinations of implicit functions to create a model of an ice cream cone.
ImplicitQuadric	Create an ellipsoid using an implicit quadric
ImplicitSphere	Demonstrate sampling of a sphere implicit function
ImplicitSphere1	Demonstrate sampling of a sphere implicit function
Lorenz	Visualizing a Lorenz strange attractor by integrating the Lorenz equations in a volume.
MarchingCases	Explore the Marching Cubes cases.
MarchingCasesA	The 256 possible cases have been reduced to 15 cases using symmetry.
MarchingCasesB	Marching cubes complementary cases. Cases 3c, 6c, 7c, 10c, 12c and 13c are displayed.
MarchingCasesC	Marching cubes, case 3 is rotated 90 degrees about the y-axis with no label.
MarchingCasesD	Marching cubes, case 7 is rotated 180 degrees about the y-axis with no label.
MarchingCubes	Create a voxelized sphere.
SampleFunction	Sample and visualize an implicit function.
SmoothDiscreteMarchingCubes	Generate smooth surfaces from labeled data.

Working with 3D Data¶

Example Name	Description	Image
AlignTwoPolyDatas	Align two vtkPolyData's.
AppendFilter	Append different types of data,
BooleanOperationPolyDataFilter	This example performs a boolean operation (Intersection, Union, Difference) of two PolyData
Bottle	Rotationally symmetric objects.
CappedSphere	Rotate an arc to create a capped sphere.
CellsInsideObject	Extract cells inside a closed surface.
ColoredTriangle	Creates a file TriangleColored.vtp.
CombinePolyData	This example combines Polydata objects, and displays the result to the screen.
ConnectivityFilter	Color any dataset type based on connectivity.
Curvatures	Compute Gaussian, and Mean Curvatures.
CurvaturesAdjustEdges	Get the Gaussian and Mean curvatures of a surface with adjustments for edge effects.
CurvaturesDemo	Demonstrates how to get the Gaussian and Mean curvatures of a surface.
ExtractPolyLinesFromPolyData	Extract polylines from polydata.
ExtractSelection	Extract selected points.
ExtractSelectionUsingCells	Extract cell, select cell.
FilledPolygon
Finance	Visualization of multidimensional financial data. The gray/wireframe surface represents the total data population. The red surface represents data points delinquent on loan payment.
FinanceFieldData	Visualization of multidimensional financial data. The yellow surface represents the total data population. The red surface represents data points delinquent on loan payment.
Glyph2D
Glyph3D
ImplicitPolyDataDistance
IterateOverLines	Iterate through the lines of a PolyData.
IterativeClosestPoints
LineOnMesh
MeshLabelImageColor
Outline
PerlinNoise
PolyDataContourToImageData
PolyDataToImageDataStencil
RotationAroundLine
RuledSurfaceFilter
SmoothMeshGrid
SolidColoredTriangle	Writes out a file TriangleSolidColor.vtp.
Spring	Rotation in combination with linear displacement and radius variation.
TransformPolyData	Apply a Transformation to a PolyData.
TriangleColoredPoints
TriangleCornerVertices
TriangleCorners
TriangulateTerrainMap	Generate heights (z values) on a 10x10 grid (a terrain map) and then triangulate the points to form a surface.
TubeFilter	Give lines a thickness (produce a cylinder around lines).
VertexGlyphFilter	Add a vertex to each point.
WarpTo	Deform geometry by warping towards a point.
WarpVector	This example warps/deflects a line.
WriteTriangleToFile

Data Types¶

Example Name	Description	Image
CompositePolyDataMapper
MultiBlockDataSet	Demonstrates how to make and use VTK's MultiBlock type data
OverlappingAMR	Demonstrates how to create and populate a VTK's Overlapping AMR Grid type Data

Data Type Conversions¶

Point Cloud Operations¶

Example Name	Description	Image
PointSource	Generate a random point cloud.

Working with Meshes¶

This section includes examples of manipulating meshes.

Example Name	Description	Image
BoundaryEdges	Find the edges that are used by only one face.
ClosedSurface	Check if a surface is closed.
ColoredElevationMap	Color a mesh by height.
Decimation	Reduce the number of triangles in a mesh.
DeformPointSet	Use the vtkDeformPointSet filter to deform a vtkSphereSource with arbitrary polydata.
DelaunayMesh	Two-dimensional Delaunay triangulation of a random set of points. Points and edges are shown highlighted with sphere glyphs and tubes.
PointInterpolator	Plot a scalar field of points onto a PolyData surface.

Clipping¶

Example Name	Description	Image
CapClip	Cap a clipped polydata with a polygon.
ClipDataSetWithPolyData	Clip a vtkRectilinearGrid with arbitrary polydata. In this example, use a vtkConeSource to generate polydata to slice the grid, resulting in an unstructured grid.
ClipDataSetWithPolyData1	Clip a vtkRectilinearGrid with arbitrary polydata. In this example, use a vtkConeSource to generate polydata to slice the grid, resulting in an unstructured grid.
SolidClip	Create a "solid" clip. The "ghost" of the part clipped away is also shown.

Working with Structured 3D Data¶

This section includes vtkImageData, vtkExplicitStructuredGrid, vtkStructuredGrid, vtkStructuredPoints and vtkRectilinearGrid.

"ImageData" is not the traditional "flat, 2D image" you are used to. It is a special VTK data structure in the collection of 3D data structures provided by VTK. Image data can represent at typical 2D image, but also, a 3D volume.

vtkImageData¶

Example Name	Description	Image
ImageWeightedSum	Add two or more images.

vtkExplicitStructuredGrid¶

Example Name	Description	Image
CreateESGrid	Create an explicit structured grid and convert this to an unstructured grid or vice versa.
LoadESGrid	Load a VTU file and convert the dataset to an explicit structured grid.

vtkStructuredGrid¶

Example Name	Description	Image
BlankPoint	Blank a point of a vtkStructuredGrid.
SGrid	Creating a structured grid dataset of a semi-cylinder. Vectors are created whose magnitude is proportional to radius and oriented in tangential direction.

vtkStructuredPoints¶

Example Name	Description	Image
Vol	Creating a image data dataset. Scalar data is generated from the equation for a sphere. Volume dimensions are 26 x 26 x 26.

vtkRectilinearGrid¶

Example Name	Description	Image
RGrid	Creating a rectilinear grid dataset. The coordinates along each axis are defined using an instance of vtkDataArray.
RectilinearGrid	Create a rectilinear grid.
VisualizeRectilinearGrid	Visualize the cells of a rectilinear grid.

Working with Unstructured 3D Data¶

This section includes vtkUnstructuredGrid.

vtkUnstructuredGrid¶

Example Name	Description	Image
ClipUnstructuredGridWithPlane	Clip a UGrid with a plane.
ClipUnstructuredGridWithPlane2	Clip a UGrid with a plane.
UGrid	Creation of an unstructured grid.

Registration¶

Medical¶

Example Name	Description	Image
GenerateCubesFromLabels	Create cubes from labeled volume data.
GenerateModelsFromLabels	Create models from labeled volume data.
MedicalDemo1	Create a skin surface from volume data.
MedicalDemo2	Create a skin and bone surface from volume data.
MedicalDemo3	Create skin, bone and slices from volume data.
MedicalDemo4	Create a volume rendering.
TissueLens	Cut a volume with a sphere.

Surface reconstruction¶

Example Name	Description	Image
GaussianSplat	Create a surface from Unorganized Points (Gaussian Splat).

Utilities¶

Example Name	Description	Image
CheckVTKVersion	Check the VTK version and provide alternatives for different VTK versions.
JSONColorMapToLUT	Take a JSON description of a colormap and convert it to a VTK colormap.
ColorMapToLUT	Use vtkDiscretizableColorTransferFunction to generate a VTK colormap.
ConstrainedDelaunay2D	Perform a 2D Delaunay triangulation on a point set respecting a specified boundary.
Delaunay2D
LUTUtilities	A utility class for vtkLookupTable allowing you to output the table contents or to compare tables.
MultipleRenderWindows	Multiple Render Windows.
MultipleViewports	Multiple Viewports.
RescaleReverseLUT	Demonstrate how to adjust a colormap so that the colormap scalar range matches the scalar range on the object. You can optionally reverse the colors.
ResetCameraOrientation	Reset camera orientation to a previously saved orientation.
SaveSceneToFieldData	Save a vtkCamera's state in a vtkDataSet's vtkFieldData and restore it.
SaveSceneToFile	Save a vtkCamera's state in a file and restore it.
SelectExamples	Given a VTK Class and a language, select the matching examples.
Screenshot
ShareCamera	Share a camera between multiple renderers.
VTKImportsForPython	Generate import statements for the VTK classes in your Python code.
VTKModulesForCxx	Generate a find_package(VTK COMPONENTS ...) command for CMake.
VTKWithNumpy
Variant
XMLColorMapToLUT	Take an XML description of a
colormap and convert it to a VTK colormap.

Arrays¶

Events¶

Math Operations¶

Graphs¶

Example Name	Description	Image
ColorEdges	Color edges.
ColorVertexLabels	Set the color of vertex labels.
ColorVerticesLookupTable	Color vertices.
ConstructGraph	Construct a graph.
ConstructTree	Construct a tree.
CreateTree	Create a tree and label the vertices and edges.
EdgeWeights
GraphToPolyData	Convert a graph to a PolyData.
LabelVerticesAndEdges	Label vertices and edges.
NOVCAGraph
RandomGraphSource	Create a random graph.
ScaleVertices	Size/scale vertices based on a data array.
SelectedVerticesAndEdges
SideBySideGraphs	Display two graphs side by side.
VisualizeDirectedGraph	Visualize a directed graph.
VisualizeGraph

Graph Conversions¶

Data Structures¶

Timing Demonstrations¶

KD-Tree¶

Oriented Bounding Box (OBB) Tree¶

Octree¶

Modified BSP Tree¶

HyperTreeGrid¶

Example Name	Description	Image
HyperTreeGridSource	Create a vtkHyperTreeGrid.

VTK Concepts¶

Rendering¶

Example Name	Description	Image
AmbientSpheres	Demonstrates the effect of ambient lighting on spheres.
CameraBlur	Example of a scene rendered with focal depth.
ColoredSphere	A simple sphere.
Cone3	Four frames of output, based on the VTK example Cone3.py.
Cone4	Modifying properties and transformation matrix based on the VTK example Cone4.py.
DiffuseSpheres	Demonstrates the effect of diffuse lighting on spheres.
FlatVersusGouraud	Flat and Gouraud shading. Different shading methods can dramatically improve the look of an object represented with polygons. On the top, flat shading uses a constant surface normal across each polygon. On the bottom, Gouraud shading interpolates normals from polygon vertices to give a smoother look.
GradientBackground	Demonstrates the background shading options.
LayeredActors	Demonstrates the use of two linked renderers. The orientation of objects in the non active layer is linked to those in the active layer.
Mace	An example of multiple inputs and outputs.
Model	Illustrative diagram of graphics objects.
MotionBlur	Example of motion blur.
OutlineGlowPass	Demonstrates how to render a object in a scene with a glowing outline.
PBR_Anisotropy	Render spheres with different anisotropy values.
PBR_Clear_Coat	Render a cube with custom texture mapping and a coat normal texture.
PBR_Edge_Tint	Render spheres with different edge colors using a skybox as image based lighting.
PBR_HDR_Environment	Renders spheres with different materials using a skybox as image based lighting.
PBR_Mapping	Render a cube with custom texture mapping.
PBR_Materials	Renders spheres with different materials using a skybox as image based lighting.
PBR_Materials_Coat	Render spheres with different coat materials using a skybox as image based lighting.
PBR_Skybox	Demonstrates physically based rendering, a skybox and image based lighting.
PBR_Skybox_Texturing	Demonstrates physically based rendering, a skybox, image based lighting and texturing.
PBR_Skybox_Anisotropy	Demonstrates physically based rendering, a skybox, image based lighting, and anisotropic texturing.
Rainbow	Use and manipulation of vtkLookupTables.
Rotations	Rotations of a cow about her axes.
RotationsA	Perform six rotations of a cow about her x-axis (Figure 3-31a).
RotationsB	Perform six rotations of a cow about her y-axis (Figure 3-31b).
RotationsC	Perform six rotations of a cow about her z-axis (Figure 3-31c).
RotationsD	First a rotation of a cow about her x-axis, then six rotations about her y-axis (Figure 3-31d).
Shadows	Draw model with shadows.
SpecularSpheres	Demonstrates the effect of specular lighting on spheres.
StippledLine	Draw a stippled line.
StripFran	Triangle strip examples. (a) Structured triangle mesh consisting of 134 strips each of 390 triangles. (b) Unstructured triangle mesh consisting of 2227 strips of average length 3.94, longest strip 101 triangles. Images are generated by displaying every other triangle strip.
TransformSphere	The addition of a transform filter to ColoredSphere.
TransparentBackground	Demonstrates the use of two renderers. Notice that the second (and subsequent) renderers will have a transparent background.
WalkCow	This generates Figs. 3-32, 3-33 found in VTKTextbook.pdf.
WalkCowA	This generates Fig. 3-33a found in VTKTextbook.pdf.
WalkCowB	This generates Fig. 3-33b found in VTKTextbook.pdf.

Lighting¶

Example Name	Description	Image
ShadowsLightsDemo	Show lights casting shadows.

Texture Mapping¶

Example Name	Description	Image
AnimateVectors	One frame from a vector field animation using texture maps.
TextureCutQuadric	Cut a quadric with boolean textures.
TextureCutSphere	Examples of texture thresholding. (b) Boolean combination of two planes to cut nested spheres.
TexturePlane	Example of texture mapping.
TextureThreshold	Demonstrate the use of scalar thresholds to show values of flow density on three planes.

Tutorial¶

If you are new to VTK then these tutorials will help to get you started.

Tutorial	Description	Image
Step 1	Create a cone, render it and rotate it through 360°.
Step 2	Adding an observer.
Step 3	Using multiple renderers within a render window.
Step 4	The creation of multiple actors and the manipulation of their properties and transformations.
Step 5	Introducing the concept of interaction.
Step 6	Using a 3D widget.

Visualization¶

See this tutorial for a brief explanation of the VTK terminology of mappers, actors, etc.

Example Name	Description	Image
AlphaFrequency	Linearly extrude fonts to show letter frequencies in text.
AnatomicalOrientation	Show a labelled set of anatomical planes transecting a human figure.
AnnotatedCubeActor	Annotated cube.
AssignCellColorsFromLUT	Demonstrates how to assign colors to cells in a vtkPolyData structure using lookup tables.
BillboardTextActor3D	Label points with billboards.
BlobbyLogo	A logo created with vtkImplicitModeller.
Blow	Ten frames from a blow molding finite element analysis.
BluntStreamlines	Demonstrates airflow around a blunt fin using streamlines.
Camera	Positioning and aiming the camera.
CameraModel1	Illustrate camera movement around the focal point.
CameraModel2	camera movement centered at the camera position.
CarotidFlow	Visualizing blood flow in the human carotid arteries. Streamtubes of flow velocity are generated.
CarotidFlowGlyphs	Visualizing blood flow in human carotid arteries. Cone glyphs indicate flow direction and magnitude.
ClampGlyphSizes	Use vtkGlyph3D with ClampingOn to limit glyph sizes
ClipSphereCylinder	A plane clipped with a sphere and an ellipse. The two transforms place each implicit function into the appropriate position. Two outputs are generated by the clipper.
CollisionDetection	Collison between two spheres.
ColorAnActor	Colour the actor.
ColorSeriesPatches	Creates a HTML file called VTKColorSeriesPatches
ColoredAnnotatedCube	How to color the individual faces of an annotated cube.
CombustorIsosurface	Generate an isosurface of constant flow density.
ComplexV	ComplexV from the VTK Textbook.
ContourQuadric	Contouring a quadric function.
CreateBFont	A scanned image clipped with a scalar value of 1/2 its maximum intensity produces a mixture of quadrilaterals and triangles.
CreateColorSeriesDemo	Create a custom vtkColorSeries.
CubeAxesActor	Display three orthogonal axes with labels.
CurvatureBandsWithGlyphs	Demonstrates the coloring of a surface by partitioning the gaussian curvature of a surface into bands and using arrows to display the normals on the surface.
CutStructuredGrid	Cut through structured grid with plane. The cut plane is shown solid shaded. A computational plane of constant k value is shown in wireframe for comparison. The colors correspond to flow density. Cutting surfaces are not necessarily planes: implicit functions such as spheres, cylinders, and quadrics can also be used.
Cutter	How to use vtkCutter by cutting through a cube.
DataSetSurface	Cutting a hexahedron with a plane. The red line on the surface shows the cut.
DecimateFran	Examples of decimation algorithm. (a) Decimation of laser digitizer data.
DecimateHawaii	Examples of decimation algorithm. (b) Decimation of terrain data.
DisplacementPlot	Show modal lines for a vibrating beam.
DisplayCoordinateAxes	Display coordinate axes.
DisplayQuadricSurfaces	Create and display a quadratic surface.
ElevationBandsWithGlyphs	Demonstrates the coloring of a surface by partitioning the elevation into bands and using arrows to display the normals on the surface.
ExponentialCosine	Carpet plots. Visualization of an exponential cosine function. Function values are indicated by surface displacement. Colors indicate derivative values.
FlyingHeadSlice	Flying edges used to generate contour lines.
FrogBrain	The frog's brain. Model extracted without smoothing (left) and with smoothing (right).
FroggieSurface	Construct surfaces from a segmented frog dataset. Up to fifteen different surfaces may be extracted. You can turn on and off surfaces and control the camera position.
FroggieView	View surfaces of a segmented frog dataset using preprocessed *.vtk tissue files. You can turn on and off surfaces, control their opacity through the use of sliders and control the camera position.
FrogSlice	Photographic slice of frog (upper left), segmented frog (upper right) and composite of photo and segmentation (bottom). The purple color represents the stomach and the kidneys are yellow.
GlyphTable	Vary the shapes of glyphed points using a glyph table
Hanoi	Towers of Hanoi.
HanoiInitial	Towers of Hanoi - Initial configuration.
HanoiIntermediate	Towers of Hanoi - Intermediate configuration.
HardwareSelector
Hawaii	Visualize elevations by coloring the scalar values with a lookup table.
HeadBone	Marching cubes surface of human bone.
HeadSlice	Marching squares used to generate contour lines.
HyperStreamline	Example of hyperstreamlines, the four hyperstreamlines shown are integrated along the minor principle stress axis. A plane (colored with a different lookup table) is also shown.
IronIsoSurface	Marching cubes surface of iron-protein.
IsosurfaceSampling	Demonstrates how to create point data on an isosurface.
Kitchen	Demonstrates stream tracing in a kitchen.
KochSnowflake	This example draws a Koch snowflake fractal using recursive functions and some of the convenient tools in the toolkit.
LOx	Streamtubes created by using the computational grid just in front of the post as a source for seeds.
LOxGrid	Portion of computational grid for the LOx post.
LOxSeeds	Streamlines seeded with spherical cloud of points. Four separate cloud positions are shown.
LoopShrink	A network with a loop. VTK 5.0 does not allow you to execute a looping visualization network; this was possible in previous versions of VTK.
Motor	Texture cut used to reveal internal structure of a motor. Two cut planes are used in combination with transparent texture.
NamedColorPatches	Creates a HTML file called VTKNamedColorPatches
NamedColors	Demonstrates how to use the vtkNamedColors class.
NormalsDemo	Demo different options to generate normals.
Office	Using random point seeds to create streamlines.
OfficeA	Corresponds to Fig 9-47(a) in the VTK textbook.
OfficeTube	The stream polygon. Sweeping a polygon to form a tube.
OrientedGlyphs	Create oriented glyphs from vector data.
PineRootConnectivity	Applying the connectivity filter to remove noisy isosurfaces.
PineRootConnectivityA	The isosurface, with no connectivity filter applied.
PineRootDecimation	Applying the decimation and connectivity filters to remove noisy isosurfaces and reduce data size.
PlateVibration	Demonstrates the motion of a vibrating beam.
PointDataSubdivision	Demonstrates the use of the vtkLinearSubdivisionFilter and vtkButterflySubdivisionFilter.
PointSize
ProbeCombustor	Probing data in a combustor. Probes are regular arrays of 50 by 50 points that are then passed through a contouring filter.
ProgrammableGlyphFilter	Generate a custom glyph at each point.
ProgrammableGlyphs	Generate programmable glyphs.
PseudoVolumeRendering	Here we use 20 cut planes, each with an opacity of of 0.25. They are then rendered back-to-front to simulate volume rendering.
QuadricVisualization	Visualizing a quadric function.
SingleSplat	Elliptical splatting. (a) Single elliptical splat with eccentricity E=10. Cone shows orientation of vector.
SphereTexture	Apply an ImageData texture to an sphere
SpikeFran	Glyphs indicate surface normals on model of human face. Glyph positions are randomly selected.
SplatFace	Elliptical splatting. (b) Surface reconstructed using elliptical splats into 100^3 volume followed by isosurface extraction. Points regularly subsampled and overlaid on original mesh.
Stocks	Two views from the stock visualization script. The top shows closing price over time; the bottom shows volume over time.
StreamLines	Seed streamlines with vectors from a structured grid.
StreamlinesWithLineWidget	Using the vtkLineWidget to produce streamlines in the combustor dataset. The StartInteractionEvent turns the visibility of the streamlines on; the InteractionEvent causes the streamlines to regenerate themselves.
TensorAxes	Display the scaled and oriented principal axes of the stress tensor.
TensorEllipsoids	Display the scaled and oriented principal axes as tensor ellipsoids representing the stress tensor.
TextSource
VectorText	Display high resolution text.
VelocityProfile	Warping the geometry of three planes to show flow momentum.
WarpCombustor	Carpet plots of combustor flow energy in a structured grid. Colors and plane displacement represent energy values.
WindowTitle

Working with vtkImageData¶

Example Name	Description	Image
ImageDataGeometryFilter	Convert a vtkImageData to a vtkPolyData.
ImageNormalize	Normalize an image.
SumVTKImages	A function to simplify the summing of images, where you can pass a list of images and weights.
WriteReadVtkImageData	Generate, edit and read out vtk image data.

Volume Rendering¶

Example Name	Description	Image
SimpleRayCast	Volume rendering of a high potential iron protein.

User Interaction¶

Example Name	Description	Image
CallBack	Setting up a callback with client data. Two different methods are demonstrated.
CellPicking	Cell Picking.
HighlightPickedActor	Pick and highlight an actor based on mouse clicks.
HighlightWithSilhouette	Highlight a picked actor by adding a silhouette.
InteractorStyleTrackballActor
InteractorStyleTrackballCamera
MouseEvents	Subclass the interactor style.
MouseEventsObserver	Use an observer.

Working with Images¶

Example Name	Description	Image
Actor2D	2D actor and mapper.
BackgroundImage	Display an image as the "background" of a scene, and render a superquadric in front of it.
Cast	Cast an image to a different type.

Image Processing¶

Example Name	Description	Image
Attenuation	This MRI image illustrates attenuation that can occur due to sensor position. The artifact is removed by dividing by the attenuation profile determined manually.
EnhanceEdges	High-pass filters can extract and enhance edges in an image. Subtraction of the Laplacian (middle) from the original image (left) results in edge enhancement or a sharpening operation (right).
GaussianSmooth	Low-pass filters can be implemented as convolution with a Gaussian kernel.
HybridMedianComparison	Comparison of median and hybrid-median filters. The hybrid filter preserves corners and thin lines, better than the median filter.
IdealHighPass	This figure shows two high-pass filters in the frequency domain. The Butterworth high-pass filter has a gradual attenuation that avoids ringing produced by the ideal high-pass filter with an abrupt transition.
ImageGradient	Create an imaging pipeline to visualize gradient information.
ImageWarp	Combine the imaging and visualization pipelines to deform an image in the z-direction. The vtkMergeFilter is used to combine the warped surface with the original color data.
IsoSubsample	This figure demonstrates aliasing that occurs when a high-frequency signal is subsampled. High frequencies appear as low frequency artifacts. The left image is an isosurface of a skull after subsampling. The right image used a low-pass filter before subsampling to reduce aliasing.
MedianComparison	Comparison of Gaussian and Median smoothing for reducing low-probability high-amplitude noise.
MorphologyComparison	This figure demonstrates various binary filters that can alter the shape of segmented regions.
Pad	Convolution in frequency space treats the image as a periodic function. A large kernel can pick up features from both sides of the image. The lower-left image has been padded with a constant to eliminate wraparound during convolution. On the right, mirror padding has been used to remove artificial edges introduced by borders.
VTKSpectrum	The discrete Fourier transform changes an image from the spatial domain into the frequency domain, where each pixel represents a sinusoidal function. This figure shows an image and its power spectrum displayed using a logarithmic transfer function.

Widgets¶

Example Name	Description	Image
BalloonWidget	Uses a vtkBalloonWidget to draw labels when the mouse stays above an actor.
BoxWidget	This 3D widget defines a region of interest that is represented by an arbitrarily oriented hexahedron with interior face angles of 90 degrees (orthogonal faces). The object creates 7 handles that can be moused on and manipulated.
CameraOrientationWidget	Demonstrates a 3D camera orientation widget.
CompassWidget	Draws an interactive compass.
ContourWidget	Draw a contour (line) which can be deformed by the user
ImplicitPlaneWidget2	Clip polydata with an implicit plane.
OrientationMarkerWidget	Draws two cubes. One of them can be clicked to be rotated, and will rotate the second one. The second one has annotations on it, and can also be moved.
OrientationMarkerWidget1	Display a polydata as an orientation icon.
ScalarBarWidget	The ScalarBarWidget displays a scalar bar that is movable and changes orientation automatically when close to the borders of the image. It needs a ScalarBarActor
SphereWidget	This 3D widget defines a sphere that can be interactively placed in a scene.
SplineWidget	This example shows how to use vtkSplineWidget with a callback being used to get the length of the spline widget.
TextWidget	Annotate a VTK image with movable text

Plotting¶

Example Name	Description	Image
MultiplePlots	Display multiple plots by using viewports in a single render window.
ScatterPlot	Scatter plot.
SpiderPlot	Spider plot.
SurfacePlot	Surface plot.

Animation¶

Example Name	Description	Image
Animation	Move a sphere across a scene.

Annotation¶

Example Name	Description	Image
MultiLineText	Display multiline text.
TextOrigin	This example demonstrates the use of vtkVectorText and vtkFollower. vtkVectorText is used to create 3D annotation.

InfoVis¶

Example Name	Description	Image
ParallelCoordinatesExtraction	Extract data based on a selection in a Parallel Coordinates View.
ParallelCoordinatesView	How to use Parallel Coordinates View to plot and compare data set attributes.
SelectedGraphIDs	Callback on vtkAnnotationLink in a Graph Layout View when selection is changed.

PyQt¶

Example Name	Description	Image
EmbedInPyQt	Shows how to easily embed VTK in PyQt with QVTKRenderWindowInteractor, first example
EmbedInPyQt2	Shows how to embed VTK in PyQt with QVTKRenderWindowInteractor, second example