.. _io_track: ================= Track File Format ================= The current revision of the particle track file format is 2.0. **/** :Attributes: - **filetype** (*char[]*) -- String indicating the type of file. - **version** (*int[2]*) -- Major and minor version of the track file format. - **n_particles** (*int*) -- Number of particles for which tracks are recorded. - **n_coords** (*int[]*) -- Number of coordinates for each particle. :Datasets: - **coordinates_** (*double[][3]*) -- (x,y,z) coordinates for the *i*-th particle.