**XYZ** is a data directory which
contains examples of XYZ files, a very simple format
for recording points in 3D space.

An **XYZ** file has a simple structure:

- Comment lines begin with '#" in column 1, and may appear anywhere;
- Blank lines may appear anywhere.
- The coordinates of a point are written on a single line, separated by spaces;

```
# Corners of a tetrahedron
#
0.0 0.0 0.0
1.0 0.0 0.0
0.0 1.0 0.0
0.0 0.0 1.0
```

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

TABLE, a data directory which contains examples of TABLE files, a simple format for N points in M dimensions;

XY, a data directory which contains examples of XY files, a simple 2D graphics point format;

XYZL, a data directory which contains examples of XYZL files, a simple 3D graphics point and line format;

- crystal_4000.xyz, 4000 points in an FCC crystal (data created by CRYSTAL_COORDINATES.F90)
- crystal_4000.png, a PNG image of the data.
- cube.xyz, the 8 vertices of a cube.
- dodecahedron.xyz, the 20 vertices of a dodecahedron.
- helix_201.xyz, 201 points on a helix;
- helix_201.png, a PNG image of the data.
- icosahedron.xyz, the 12 vertices of an icosahedron.
- octahedron.xyz, the 6 vertices of an octahedron.
- sphere_122.xyz 122 points on the surface of a sphere;
- sphere_482.xyz 482 points on the surface of a sphere;
- sphere_spiral_700.xyz, 700 points spiral around the surface of the unit sphere;
- sphere_spiral_700.png, a PNG image of the data.
- teapot_306.xyz, 306 points on a teapot;
- teapot_306.png, a PNG image of the data.
- tetrahedron.xyz, the 4 vertices of a tetrahedron;
- truncated_icosahedron.xyz, the 60 vertices of a truncated icosahedron;
- truncated_icosahedron.png, a PNG image of the data.
- truncated_octahedron.xyz, the 24 vertices of a truncated octahedron;
- uniform_100.xyz, 100 points uniformly distributed in the unit cube;

You can go up one level to the DATA page.