grid2tri - Gridded Surface to Irregular Triangulation
Converts a regular gridded surface into an irregular triangulation by iteratively adding vertices to an initial triangulation until the difference is smaller than some user set tolerance(s). Returns a triangulation interpolant that can be evaluated on scattered or gridded query locations. The size of a triangulation interpolant is usually much smaller than the corresponding gridded interpolant as the triangulation is adapted to surface, i.e., the resolution is not uniform but finer in areas where needed.
The routines support triangulation of gridded surfaces with undefined NaN-areas (for example holes) and “hot-start” to refine a previous triangulation. There are a number of options for the triangulation, for the error tolerances/convergence criteria and for printing/plotting. All files have detailed help and demos are included.
The routines are, for example, useful for converting GIS data from DEM- to TIN-format and for converting gridded data to a triangulation that can be used in a PDE solver.
Citation pour cette source
Patrik Forssén (2024). grid2tri - Gridded Surface to Irregular Triangulation (https://www.mathworks.com/matlabcentral/fileexchange/54007-grid2tri-gridded-surface-to-irregular-triangulation), MATLAB Central File Exchange. Récupéré le .
Compatibilité avec les versions de MATLAB
Plateformes compatibles
Windows macOS LinuxCatégories
- Mathematics and Optimization > Partial Differential Equation Toolbox > Geometry and Mesh >
- Mathematics and Optimization > Partial Differential Equation Toolbox > General PDEs > Visualization >
Tags
Remerciements
Inspiré par : mesh2tri, Line Simplification
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grid2tri/
Version | Publié le | Notes de version | |
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1.0.0.0 | Added image |