[yt-users] yt confusion

[Matthew Turk]

Hi Kathy,

On Tue, Apr 29, 2014 at 2:32 PM, Kathy Eastwood <kathy.eastwood at nau.edu> wrote:
> Dear yt folks,
>
> I am sorry to keep bothering you, but I have once again confused myself.
> Below I reference two bits of yt documentation and one yt cookbook example.
>
> http://yt-project.org/docs/2.6/reference/api/generated/yt.data_objects.data_containers.AMRSphereBase.extract_isocontours.html?highlight=extract_isocontours
>
> This is a function that returns the vertices of marching cube triangles
>
>
> http://yt-project.org/docs/2.5/api/generated/yt.data_objects.data_containers.AMRSurfaceBase.html
>
> This creates a surface object which also returns vertices of same marching
> cubes triangles. (Note that there is an error in the Examples section; the
> text there actually refers to the script shown on the previous
> extract_isocontours page.)
>
>
> http://yt-project.org/docs/2.5/cookbook/complex_plots.html#plotting-isocontours
>
> This is an example which uses the output  triangles of the surface object to
> make an isocontour plot
>
> So now I am rather confused. If I want to make an isocontour plot, using the
> vertices of the triangles resulting from the marching cubes method, what is
> the difference between these two? In particular, I have decided that I would
> like to output the vertices to a file and then read them in to some other
> plotting program. Are the two ways shown exactly equivalent? Is one to be
> preferred over the other, particularly if I want to use a sphere data
> container as my source? I have not been able to get the .surface to work
> with just a sphere data container.
>

I believe that they should be the same -- I'm sorry things aren't
working for you as you'd like.  Can you send a sample script?

> thanks
> Kathy
>
> --
> Kathy DeGioia Eastwood, Ph.D.
> Professor of Physics and Astronomy
> Northern Arizona University
> Flagstaff, AZ 86011-6010
> Ph: 928-523-7159   FX: 928-523-1371
> Kathy.Eastwood at nau.edu
> deliveries: 602 S. Humphreys St., Bldg 19 Rm 209
>
>
>
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