dv

zdm.cosmology.dv(z)

Comoving volume element via linear interpolation (fast, array-compatible).

Requires prior call to init_dist_measures() to populate lookup tables.

Parameters:

z (float or array_like) – Redshift(s). Must be within [ZMIN, ZMAX] set during initialization.

Returns:

Volume element in Mpc^3 per unit redshift per steradian.

Return type:

float or ndarray