Hi Matt,

Those fields are not in my derived field list. That is ds.derived_field_list. Do I have to add them in some way? Or is there a way to check if yt didn't find the cooling??.dat files?

Thanks,

Ari


On Thu, Aug 14, 2014 at 1:54 PM, <yt-users-request@lists.spacepope.org> wrote:
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Today's Topics:

   1. ionization states in ramses data sets (Professor Maller)
   2. Re: ionization states in ramses data sets (Geoffrey So)
   3. Re: ionization states in ramses data sets (Matthew Turk)


----------------------------------------------------------------------

Message: 1
Date: Thu, 14 Aug 2014 13:12:11 -0400
From: Professor Maller <amaller@citytech.cuny.edu>
To: yt-users@lists.spacepope.org
Subject: [yt-users] ionization states in ramses data sets
Message-ID:
        <CACCSjdOxDp+Mmgae1XLYJJvC7vJn52Xu59ppUA+p0mq7Fggz8A@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hi,

Does anyone have code to create derived fields of ionization states, e.g.
HI, for ramses data sets?  If that's a no, does anyone have an example of a
derived field where you have to read in a table and interpolate the field
values.

Thanks,

Ari
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Message: 2
Date: Thu, 14 Aug 2014 10:19:49 -0700
From: Geoffrey So <gsiisg@gmail.com>
To: Discussion of the yt analysis package
        <yt-users@lists.spacepope.org>
Subject: Re: [yt-users] ionization states in ramses data sets
Message-ID:
        <CAM-dO+DM+ygbGg3GG9vrxjSn+JM9mGGgHDXA1UEJu1KYpnJJqw@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hi,

according to
http://yt-project.org/docs/2.6/analyzing/creating_derived_fields.html?

what worked for me for enzo data is the following

def _HINeutralFraction(field, data):
    return data['HI_Density']/(data['HI_Density']+data['HII_Density'])

add_field('HINeutralFraction',function=_HINeutralFraction,
          units=r"\rho_\mathrm{HI}/\rho_\mathrm{H}")

unless there's something strange with ramses dataset, the above should work.

From
G.S.


On Thu, Aug 14, 2014 at 10:12 AM, Professor Maller <
amaller@citytech.cuny.edu> wrote:

> Hi,
>
> Does anyone have code to create derived fields of ionization states, e.g.
> HI, for ramses data sets?  If that's a no, does anyone have an example of a
> derived field where you have to read in a table and interpolate the field
> values.
>
> Thanks,
>
> Ari
>
> _______________________________________________
> yt-users mailing list
> yt-users@lists.spacepope.org
> http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org
>
>
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Message: 3
Date: Thu, 14 Aug 2014 12:22:16 -0500
From: Matthew Turk <matthewturk@gmail.com>
To: Discussion of the yt analysis package
        <yt-users@lists.spacepope.org>
Subject: Re: [yt-users] ionization states in ramses data sets
Message-ID:
        <CALO3=5HE+5eFNfXaWqJ_ApFCZeE_Sy73EEj+O5y7CuqMiVQ9sQ@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8

Hi Ari,

My reading of yt/frontends/ramses/fields.py is that this should be
implemented already, using the cooling_%05i.dat files.  If it's able
to find those files, it will create the appropriate derived fields
from them -- specifically, I think it can do Electron, HI, HII, HeI,
HeII, and HeIII.  Is it not creating those?

On Thu, Aug 14, 2014 at 12:12 PM, Professor Maller
<amaller@citytech.cuny.edu> wrote:
> Hi,
>
> Does anyone have code to create derived fields of ionization states, e.g.
> HI, for ramses data sets?  If that's a no, does anyone have an example of a
> derived field where you have to read in a table and interpolate the field
> values.
>
> Thanks,
>
> Ari
>
> _______________________________________________
> yt-users mailing list
> yt-users@lists.spacepope.org
> http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org
>


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