Topology ToolKit

Efficient, generic and easy
Topological data analysis and visualization


 ·  We had a great TTK Hackathon at TopoInVis 2019! Thanks everybody! [June 16, 2019]
 ·  TTK will be presented in a tutorial at IEEE VIS 2019! [June 5, 2019]
 ·  Join us at TopoInVis in Sweden for a TTK Hackathon! [May. 4, 2019]
 ·  New TTK release! Checkout the ChangeLog. [Nov. 13, 2018]
 ·  Join us on Sunday afternoon at IEEE VIS 2018 for our TTK tutorial! [October 19, 2018]
 ·  New TTK release! Checkout the ChangeLog. [Jul. 30, 2018]
 ·  TTK will be presented in an invited session at ACM SIGGRAPH 2018. [Jul. 30, 2018]

The Topology ToolKit (TTK) is an open-source library and software collection for topological data analysis in scientific visualization.

TTK can handle scalar data defined either on regular grids or triangulations, either in 2D or in 3D. It provides a substantial collection of generic, efficient and robust implementations of key algorithms in topological data analysis. It includes:
 · For scalar data: critical points, integral lines, persistence diagrams, persistence curves, merge trees, contour trees, Reeb graphs, Morse-Smale complexes, topological simplification, topology-aware compression, harmonic design;
 · For bivariate scalar data: fibers, fiber surfaces, continuous scatterplots, Jacobi sets, Reeb spaces;
 · For uncertain scalar data: mandatory critical points;
 · For time-varying scalar data: critical point tracking, nested tracking graphs;
 · For high-dimensional / point cloud data: dimension reduction;
 · and more!
If you need to robustly analyze your acquired or simulated scientific data, you may want to use TTK.
> Check out our gallery page for some TTK eye candy!

TTK makes topological data analysis accessible to end users thanks to easy-to-use plugins for the visualization front end ParaView. Thanks to ParaView, TTK supports a variety of input data formats.
> Check out our video tutorials to see TTK in action!

TTK is written in C++ but comes with a variety of bindings (VTK/C++, Python) and standalone command-line programs. It is modular and easy to extend. We have specifically developed it such that you can easily write your own data analysis tools as TTK modules.
> Check out our developer documentation

TTK is open-source (BSD license). You can use it at your convenience, for open-source or proprietary projects. You are also welcome to contribute.
> Check out our contribution page