Dear yt:

I am trying to do volume rendering for my data and create a time lapse movie.

Is there a way to extract and put lower and upper bound while volume render? This is to maintain a consistency between frames.

My code is below

Thanks in advance


import yt
import numpy as np
import matplotlib.pylab as pl

from yt.visualization.api import Streamlines
from yt.units import km
from mpl_toolkits.mplot3d import Axes3D

ms = 52728000
vector_max=ms-(ms/3)
ms1=ms-vector_max
dims = (260,260,260)

x = np.genfromtxt("/home/sushilkumar.sreekuma/Desktop/MODEL5/UPDATE/Expl_Bt696.mtx",skip_header=2,usecols=1, dtype="f8")
x = x.reshape((17576000, 3), order="F")

field1 = x[:,2].reshape(dims, order="F")
field2 = x[:,1].reshape(dims, order="F")
field3 = x[:,0].reshape(dims, order="F")

data = dict(field_z = field1,
            field_y = field2,
            field_x = field3)

bbox = np.array([[-130, 129], [-130, 129], [-130, 129]])

pf = yt.load_uniform_grid(data, dims, km, bbox=bbox, nprocs=1)

im, sc = yt.volume_render(pf,'field_x',fname='B_rendering_t0696.png',sigma_clip=6)

sc.camera.width = (150, 'km')
sc.camera.switch_orientation()

# Save the zoomed in rendering
sc.save('B_zoomed_rendering_t0696.png')



On Mon, Dec 12, 2016 at 12:54 PM, <yt-users-request@lists.spacepope.org> wrote:
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Today's Topics:

   1. ANN: yt 3.3.3 release (Cameron Hummels)


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

Message: 1
Date: Mon, 12 Dec 2016 10:34:53 -0800
From: Cameron Hummels <chummels@gmail.com>
To: "yt-dev@lists.spacepope.org" <yt-dev@lists.spacepope.org>,
        Discussion of the yt analysis package <yt-users@lists.spacepope.org>
Subject: [yt-users] ANN: yt 3.3.3 release
Message-ID:
        <CACyTu7EM43epAiQkO+vLeq2oc92f5hvw+KM-5+cUdPThTxe=MA@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

We are proud to announce the release of yt 3.3.3!

Version 3.3.3 is a regularly scheduled bugfix release including fixes for a
number of issues reported since the release of yt 3.3.2.  We urge all users
to update to the latest version.

If your python installation is managed via conda, update following:

$ conda update -c conda-forge yt

If your python installation is managed via pip, update following:

$ pip install -U yt

Finally, if you manage your yt installation by running out of a clone of
the yt mercurial repository, update following:

$ yt update

We would like to thank the following people for their contributions to this
release:

Nathan Goldbaum
Cameron Hummels
Ben Keller
Kacper Kowalik
Jonah Miller
Andrew Myers
Hsi-Yu Schive
Britton Smith
Matthew Turk
John Wise
John ZuHone


A summary of changes in this release, along with the number of the pull
request implementing the change follows below:

Additional docstrings for unstructured mesh data.  See PR 2403
<https://bitbucket.org/yt_analysis/yt/pull-requests/2403/some-hopefully-illuminating-docstrings-for/diff>
.

Speedup in clump finding. See PR 2426
<https://bitbucket.org/yt_analysis/yt/pull-requests/2426/opt-typedef-array-returned-in/diff>
.

Speedup in tests. See PR 2427
<https://bitbucket.org/yt_analysis/yt/pull-requests/2427/use-slighlty-smaller-objects-for-certain/diff>
.

Bugfixes and docs for Tipsy data. PR 2430
<https://bitbucket.org/yt_analysis/yt/pull-requests/2430/tipsy-correct-auxiliary-file-footer-skip/diff>
, PR 2431
<https://bitbucket.org/yt_analysis/yt/pull-requests/2431/clarify-the-use-of-cosmology_parameters-in/diff>
.

Bugfix in Ramses time calculation. PR 2433
<https://bitbucket.org/yt_analysis/yt/pull-requests/2433/bugfix-explicitly-use-integer-division-in/diff>
.

Bugfix in octree indexing. PR 2434
<https://bitbucket.org/yt_analysis/yt/pull-requests/2434/bugfix-explicitly-use-integer-division-in/diff>
.

Fixing behavior of ProfilePlots and Profiles PR 2437
<https://bitbucket.org/yt_analysis/yt/pull-requests/2437/bugfix-fix-rich-display-of-profileplot-in/diff>
, PR 2448
<https://bitbucket.org/yt_analysis/yt/pull-requests/2448/bugfix-more-careful-treatment-of-profile/diff>
.

Bugfix for EPSWritter handing dicts in PlotsWindow instances. PR 2440
<https://bitbucket.org/yt_analysis/yt/pull-requests/2440/updating-eps_writer-to-handle-a-plotwindow/diff>
.

Ensuring ion fields utilize dataset's metal-specific fields PR 2442
<https://bitbucket.org/yt_analysis/yt/pull-requests/2442/making-nuclei-density-fields-more-robust/diff>
.

Assure no orphaned mercurial processes PR 2449
<https://bitbucket.org/yt_analysis/yt/pull-requests/2449/interact-with-mercurial-repositories-using/diff>
.

Adding checks for bad values in AbsorptionSpectrum PR 2450
<https://bitbucket.org/yt_analysis/yt/pull-requests/2450/adding-check-for-negative-column-densities/diff>
.

Bugfix in geographic handler PR 2452
<https://bitbucket.org/yt_analysis/yt/pull-requests/2452/fixing-x-y-axis-confusion-in-the/diff>
.

Bringing gadget data more inline with other SPH datasets PR 2456
<https://bitbucket.org/yt_analysis/yt/pull-requests/2456/enabling-gadget-frontend-to-alias/diff>
, PR 2436
<https://bitbucket.org/yt_analysis/yt/pull-requests/2436/bugfix-use-integer-division-in-gadget-io/diff>
.

Bugfix when OpenMP unavailable PR 2458
<https://bitbucket.org/yt_analysis/yt/pull-requests/2458>.

Enable light_ray_solution saved to actual LightRay class PR 2460
<https://bitbucket.org/yt_analysis/yt/pull-requests/2460/save-light-ray-solution-to-dataset/diff>
.

Assure path uses dataset's own unit system. PR 2462
<https://bitbucket.org/yt_analysis/yt/pull-requests/2462/path-unit-should-use-datasets-unit-system/diff>
.

Cameron Hummels,
On behalf of the yt development team

--
Cameron Hummels
NSF Postdoctoral Fellow
Department of Astronomy
California Institute of Technology
http://chummels.org
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