vice.toolkit.hydrodisk.hydrodiskstars.analog_index
==================================================

Type : int

The index of the analog in the hydrodynamical simulation star particle
data. -1 if it has not yet been assigned.

.. note:: Calling this object at a given zone with the formation time
	and the simulation time equal resets the star particle acting as
	the analog.

Example Code
------------
>>> from vice.toolkit.hydrodisk import hydrodiskstars
>>> import numpy as np
>>> example = hydrodiskstars(np.linspace(0, 20, 81))
>>> example.analog_index
-1 # no analog yet
>>> example(2, 1, 1) # final two arguments equal resets analog
15745
>>> example(10, 4, 4)
10
>>> example.analog_index
101206
>>> example.analog_data["rfinal"][example.analog_index]
2.6411
>>> example.analog_data["vrad"][example.analog_data]
92.2085