Hi Wolfram, (First off, those are gorgeous images, despite the boundary condition errors!) The issue I think is in the creation of the plot collection. This line: pc = PlotCollection(pf) will default to identifying the location of maximum density in the simulation, and centering the subsequent affiliated plots on that location. To override this, what you likely want to do is manually specify the center you'd like for your plots: pc = PlotCollection(pf, [0.5, 0.5, 0.5]) This should also eliminate the need for the "coord=0.5" argument to add_slice. The reason behind this is that, once upon a time, yt was used mainly by me and a couple other people doing collapse simulations -- where it was simply easier to shorthand the creation of a plot collection to be the point of maximum density. But now that it's moved well beyond that initial use case, it may be time to revisit that -- so that problems like this can be avoided. I'll bring this up on the dev mailing list in the near future, to see if it would be a good decision to change it. If you give the new options, can you let me know if it fixes the problem? Best, Matt On Mon, Nov 22, 2010 at 11:30 AM, Wolfram Schmidt <schmidt@astro.physik.uni-goettingen.de> wrote:

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Hi everyone,

rendering slices from an Enzo simulation with an inflow boundary condition, I noticed something strange (see attached pictures MSC_0050_Slice_y_*.png): It looks like a piece of the domain is chopped off at the right and attached at the left. First I thought that something was wrong with the inflow boundary condition (left edge in the pictures), but then I realized that this would be unlikely because the piece on the left matches at the right edge.

Indeed, visualizing the same data with visit, the slices appear to be ok (see MSC_0500_*_visit.png).

Has anyone an idea what is going on here?

The data are from a 3D AMR simulation with two levels of refinement, inflow on one face and outflow on the other faces.

I used the following yt script to produce the slices:

#!/home/h/nipschul/yt/yt-x86_64/bin/python2.6 # importing modules from yt.mods import * # set up our namespace import yt.extensions.volume_rendering as vr #import pylab

pf =load("064amr2x2_vort+comp/DD0050/MSC_0050") pc = PlotCollection(pf) pc.add_slice("x-velocity",1,coord=0.5) pc.save()

If it helps, I can provide the dataset (its about 140 MB as a zipped archive).

Best regards, Wolfram -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org

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