[yt-users] Halo Analysis in 3.0

[Hilary Egan]

Hi John,

Unfortunately that's a typo in the docs that I should fix. You can access
all_data by calling hc.halos_ds.all_data(). Sorry about the confusion!

-Hilary

On Mon, Oct 20, 2014 at 7:26 AM, John Regan <johnanthonyregan at gmail.com>
wrote:

> Hi All,
>
> I was testing out the new HaloCatalog infrastructure and I got stuck
> pretty quickly :)
>
> When trying to access the halo mass I tried to do so using the all_data()
> function and then the
> particle mass field e.g.
>
> hc = HaloCatalog(data_ds=data_ds, finder_method='hop')
> hc.create()
> ad = hc.all_data()
> masses = ad['particle_mass'][:]
>
> but the script failed on trying to access the all_data function - see
> traceback below. What is the best way to get at the Halo properties?
>
> Cheers,
> John
>
> yt : [INFO     ] 2014-10-20 15:54:11,353 Loaded species (109 new fields)
> /homeappl/home/regan/appl_taito/YT/Dev-3.0/yt/yt/units/yt_array.py:739:
> RuntimeWarning: divide by zero encountered in divide
>   return YTArray(super(YTArray, self).__div__(ro))
> yt : [INFO     ] 2014-10-20 15:54:11,450 Saving halo catalog (2 halos) to
> halo_catalogs/catalog/catalog.
> Traceback (most recent call last):
>   File "BasicHaloFinder.py", line 12, in <module>
>     ad = hc.all_data()
> AttributeError: 'HaloCatalog' object has no attribute 'all_data'
>
>
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>
>
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