Misc. Utilities

utils.calculate_local_densities(obj, group_list)[source]

Calculate the local number and mass density of objects.

Parameters

  • obj (SPHGR object) –

  • group_list (list) – List of objects to perform this operation on.

utils.info_printer(obj, group_type, top)[source]

General method to print data.

Parameters

  • obj (main.CAESAR) – Main CAESAR object.

  • group_type ({'halo','galaxy','cloud'}) – Type of group to print data for.

  • top (int) – Number of objects to print.

utils.memlog(msg)[source]
utils.rotator(vals, ALPHA=0, BETA=0)[source]

Rotate particle set around given angles.

Parameters

  • vals (np.array) – a Nx3 array typically consisting of either positions or velocities.

  • ALPHA (float, optional) – First angle to rotate about

  • BETA (float, optional) – Second angle to rotate about

Examples

>>> rotated_pos = rotator(positions, 32.3, 55.2)