jburkardt

MPAS_GRID_DISPLAY_OPENGL\ Display MPAS Grids {#mpas_grid_display_opengl-display-mpas-grids align=”center”} ============================

MPAS_GRID_DISPLAY_OPENGL, C++ programs which read information from an MPAS Grid file, stored in NETCDF format, and display the main (mainly hexagonal) mesh or the dual triangulation, using OpenGL.

Usage: {#usage align=”center”}

grid_cells filename.nc

where

displays a plot of the polygonal faces of the primal mesh.

triangulation_faces filename.nc

where

displays a plot of the faces of the dual triangulation.

triangulation_lines filename.nc

where

displays a plot of the lines of the dual triangulation.

Licensing: {#licensing align=”center”}

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Languages: {#languages align=”center”}

MPAS_GRID_DISPLAY_OPENGL is available in a C++ version.

FERN_OPENGL, a C++ program which uses OpenGL to display the Barnsley fractal fern.

MPAS_DRAW, a C++ program which reads an MPAS NETCDF file and allows the interactive user to select grid and solution information to be displayed using OpenGL.

MPAS_GRID_DISPLAY, MATLAB programs which can read an MPAS NETCDF grid file and display the primary polygonal mesh or the dual triangular mesh.

NETCDF, a data directory which contains examples of NETCDF files, a format for the interchange of scientific data.

NETCDF_MPAS, a data directory which contains examples of MPAS grid data stored as NETCDF files.

NETCDF_MPAS, a C++ library which reads MPAS grid data stored as NETCDF files.

Reference: {#reference align=”center”}

  1. The MPAS home page, http://mpas-dev.github.io.
  2. Russ Rew, Glenn Davis, Steve Emmerson, Harvey Davies, Ed Hartne,\ The NetCDF User’s Guide,\ Unidata Program Center, March 2009.
  3. Todd Ringler, John Thuburn, Joseph Klemp, William Skamarock,\ A unified approach to energy conservation and potential vorticity dynamics for arbitrarily-structured C-grids,\ Journal of Computational Physics,\ Volume 229, Number 9, 1 May 2010, pages 3065-3090.

Source Code: {#source-code align=”center”}

GRID_CELLS retrieves the information defining the polygonal grid cells, and displays them.

TRIANGULATION_FACES retrieves the 3 cell centers around each vertex, and draws the corresponding faces of the triangulation. The display is a triangulated sphere surface.

TRIANGULATION_LINES retrieves the pairs of cell centers that are neighbors, and draws lines to connect them. This actually creates the lines of the triangulation. The display is a triangulated sphere, but there are no areas filled in on the surface, so you can see through to the other side.

Examples and Tests: {#examples-and-tests align=”center”}

You can go up one level to the MATLAB source codes.

Last revised on 02 January 2011.