Hi Reju,

“halos[0]” is the first halo in the list of halos found by yt’s HaloFinder. 

Rather than looking directly at the source list, I recommend exploring the examples of how to use yt’s cosmology analysis tools:

http://yt-project.org/docs/dev/cookbook/cosmological_analysis.html

and for the details of halo finding:

http://yt-project.org/docs/2.6/analyzing/analysis_modules/running_halofinder.html?highlight=virial_radius

Elizabeth

On May 27, 2014, at 4:01 PM, Reju Sam John <rejusamjohn@gmail.com> wrote:

Dear All,

How to find virial radius from enzo output. From the following page 

http://yt-project.org/docs/2.6/reference/api/generated/yt.analysis_modules.halo_finding.halo_objects.FOFHalo.virial_radius.html?highlight=virial%20radius#yt.analysis_modules.halo_finding.halo_objects.FOFHalo.virial_radius

I came to know that there is a function called virial_radius(). But how to use it?

In the provided example 

>>> vr = halos[0].virial_radius()

what is ' halos[0] ' ?

Thank You

 

--

Reju Sam John

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