da

zdm.cosmology.da(z)

Angular diameter distance 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:

Angular diameter distance in Mpc.

Return type:

float or ndarray