[yt-users] Custom units.
Kuo-Chuan Pan
pankuoch at msu.edu
Tue Nov 1 11:25:11 PDT 2016
Dear Nathan,
Thanks very much for your help.
entropy is a filed in my FLASH dataset. The unit of entropy is kB/baryon in the code but it is recognised as dimensionless in yt.
The field “entr" is the entropy in my dataset. The derived field “Entropy” is the one I want to visualise.
PNS_DENSITY and PNS_ENTR are just constants.
Many thanks,
Kuo-Chuan
11 def _entrdens(field,data):
12 """
13 create a new derived field to show both entropy and density
14 """
15 dens = data["dens"]
16 entr = data["entr"]
17 entrdens = entr*(np.exp(-(dens.in_cgs()/PNS_DENSITY)**5))+PNS_ENTR
18 return entrdens
19 yt.add_field("Entropy",function=_entrdens,units="dimensionless")
> On Nov 1, 2016, at 2:20 PM, Nathan Goldbaum <nathan12343 at gmail.com> wrote:
>
> Hi Kuo-Chuan,
>
> Can you show us how you've defined your derived field?
>
> Is entropy a derived field as well or is it a field that's included in your dataset? This is the entropy per baryon, right?
>
> -Nathan
>
> On Tue, Nov 1, 2016 at 1:09 PM, Kuo-Chuan Pan <pankuoch at msu.edu <mailto:pankuoch at msu.edu>> wrote:
> Dear all,
>
> I have a custom new derived field based on density (g/cm^3) and entropy (kB/baryon but it is recognised as dimensionless).
> Currently, this new derived field is set to dimensionless (it should be kB/baryon).
>
> Could anyone teach me how to set this new derived filed to its correct unit (which should be kB/baryon)?
> Or is it possible to simply override the field label in my volume rendering plot before using save_annotated()?
>
> Many thanks,
> Kuo-Chuan
> _______________________________________________
> yt-users mailing list
> yt-users at lists.spacepope.org <mailto:yt-users at lists.spacepope.org>
> http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org <http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org>
>
> _______________________________________________
> yt-users mailing list
> yt-users at lists.spacepope.org
> http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.spacepope.org/pipermail/yt-users-spacepope.org/attachments/20161101/7020bdfc/attachment.htm>
More information about the yt-users
mailing list