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Code for calculating mean-field quantities in N-body simulations, for example the density at every particle position. Smooth can calculate several mean quantities for all particles in an N-Body simulation output file. The program produces a file for each type of output specified by the user. Example outputs are calculation of the density, mean velocity, mean speed, velocity dispersion, mach number, and phase density. These output files contain one "smoothed" quantity per particle. The output files produced by smooth are in the tipsy array format. This means that tipsy can color the particles of a simulation according to the particular smooth output produced, for example the density of every particle.

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