sphere_grid_test

sphere_grid_test, a MATLAB library which calls sphere_grid() to construct a variety of sets of points over the surface of a sphere in 3D.

Licensing:

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

Related Data and Programs:

sphere_grid, a MATLAB library which provides a number of ways of generating grids of points, or of points and lines, or of points and lines and faces, on the surface of the unit sphere in 3D.

Source Code:

• sphere_grid_test.m, calls all the tests;
• sphere_grid_test.sh, runs all the tests;
• sphere_grid_test.txt, the output file.

• sphere_grid_test01.m, tests SPHERE_GRID_ICOS_NUM;
• sphere_grid_test02.m, tests SPHERE_GRIDPOINTS_ICOS1;
• sphere_grid_test03.m, tests SPHERE_GRIDPOINTS_ICOS2;
• sphere_grid_test04.m, tests SPHERE_LL_POINTS;
• sphere_grid_test05.m, tests SPHERE_SPIRALPOINTS;
• sphere_grid_test06.m, tests SPHERE_LL_LINES;
• sphere_grid_test07.m, tests SPHERE_GRID_Q4;
• sphere_grid_test08.m, tests SPHERE_GRID_T3;
• sphere_grid_test09.m, tests SPHERE_UNIT_SAMPLE.
• sphere_grid_test10.m, tests SPHERE_CUBED_POINTS.
• sphere_grid_test11.m, uses SPHERE_LL_POINTS and SPHERE_LL_LINES to draw a sphere with a latitude/longitude grid on it.
• sphere_grid_test12.m, uses SPHERE_LL_POINTS and SPHERE_LLQ_LINES to draw a sphere with a latitude/longitude quadrilateral grid on it.
• sphere_grid_test13.m, uses SPHERE_CUBED_POINTS and SPHERE_CUBED_LINES to draw a sphere with a cubed sphere grid.

Data files and images of the sphere grids were created by the example program.

• sphere_cubed_grid.png the points and lines of a cubed sphere grid.
• sphere_icos1_points_f3.xyz the point coordinates for an icosahedral grid with factor 3.
• sphere_icos1_points_f3.png an image.
• sphere_icos1_points_f4.xyz the point coordinates for an icosahedral grid with factor 4.
• sphere_icos1_points_f4.png an image.
• sphere_icos1_points_f5.xyz the point coordinates for an icosahedral grid with factor 5.
• sphere_icos1_points_f5.png an image.
• sphere_icos1_points_f7.xyz the point coordinates for an icosahedral grid with factor 7.
• sphere_icos1_points_f7.png an image.
• sphere_icos1_points_f9.xyz the point coordinates for an icosahedral grid with factor 9.
• sphere_icos1_points_f9.png an image.
• sphere_icos2_grid_f3.xyz the point coordinates for an icosahedral grid with factor 3.
• sphere_grid_spiral_n500.xyz the point coordinates for a sprial sphere grid with 500 points.
• sphere_ll_grid.png an image of a sphere with a latitude/longitude grid on it.
• sphere_llq_grid.png an image of a sphere with a latitude/longitude quadrilateral grid on it.
• sphere_sample_1000.xyz the point coordinates for a random sample of 1000 sphere points.