Mailman 3 August 2013 - yt-users

segmentation fault while extract_obj
by Lucky Puspitarini Aug. 20, 2013

Aug. 20, 2013

Hello all, My name is Luki. I'm new in yt. I have a problem in extracting object from yt. I want to have the surface object in .obj or .ply file so then i can transform it to .u3d for 3d pdf I have a data cube that i build this way. from yt.mods import * from numpy import * myfile=loadtxt("3ddata_300_lowerres.txt") dens=myfile[:,3] densitycube=dens.reshape(61,61,61) mydata=dict(Density=densitycube) bbox=np.array([[-300,300],[-300,300],[-300,300]]) pf=load_uniform_grid(mydata,… [View More]

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How to address yt issues
by Nathan Goldbaum Aug. 20, 2013

Aug. 20, 2013

Hi all, This past week I prepared some slides on how to deal with and report issues that may come up in daily use of yt. The slides are available here: http://ngoldbaum.net/for_agora/get_help.pdf The slides were based on a talk Cameron gave at the first yt workshop at the FLASH center in January 2012 but I went ahead and updated them to reflect current best practices. If you have a minute, please take a look. Cheers, Nathan PS: The slides for the yt-3.0 demo I gave are also available: http://ngoldbaum.net/for_agora/Agora_ytdemo.slides.html

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Trouble plotting 1D scatter data from 3D Athena vtk data.
by Timothy Waters Aug. 20, 2013

Aug. 20, 2013

Hi, Here is the data and simple script to make a scatter or profile plot of my simulation output, https://www.dropbox.com/sh/ibpda938ltsxl0j/2AA2FYDUH8#/ This is a spherically symmetric (cartesian [-0.5,0.5]^3, 32cells^3) hydro simulation with initial conditions density = 1.0 if radius <= 1/3; density falls off as 1/r^2 if r > 1/3; velocity is everywhere 0 The output with these ICs is WP12.0000.vtk. When I run my script the first time using iyt I get the first image with the expected … [View More]

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Cylindrical and Polar Slicing (FLASH)
by Morgan MacLeod Aug. 20, 2013

Aug. 20, 2013

Dear yt gurus, I've enjoyed using yt for a number of FLASH problems in cartesian geometry. Right now I'm just starting on a setup in FLASH 2D polar (eventually also in 3D cylindrical) geometries. These are ordered 2D polar: r, theta 3D cylindrical: r, theta, z I was intrigued when I noticed this image on the yt-blog ( http://blog.yt-project.org/post/WhatsUpWith30.html) -- which is almost exactly what I would like to do. [image: http://blog.yt-project.org/attachments/cylindrical_pixelizer.… [View More]

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Re: [yt-users] Cylindrical and Polar Slicing (FLASH)
by Mark Subbarao Aug. 19, 2013

Aug. 19, 2013

I'll be away till August 19th, with semi-limited connectivity. Will respond when I can. Visit our website: http://www.adlerplanetarium.org

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Re: [yt-users] Cylindrical and Polar Slicing (FLASH)
by Mark Subbarao Aug. 16, 2013

Aug. 16, 2013

I'll be away till August 19th, with semi-limited connectivity. Will respond when I can. Visit our website: http://www.adlerplanetarium.org

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Re: [yt-users] Cylindrical and Polar Slicing (FLASH)
by Mark Subbarao Aug. 16, 2013

Aug. 16, 2013

I'll be away till August 19th, with semi-limited connectivity. Will respond when I can. Visit our website: http://www.adlerplanetarium.org

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Field Cuts in Off-Axis Projections
by Munier Azzam Salem Aug. 14, 2013

Aug. 14, 2013

Hey guys, I've been trying to make slices of density only looking at cooler gas (i.e. with a cut in Temperature). I've found a nice way to do this for simple projections. But my strategy breaks for Off-Axis projections. Specifically, this works fine: * * *field_parameters={'field_cuts':["grid['Temperature'] < 1e6 "]})* *cold_proj = ProjectionPlot(pf,0,'Density',field_parameters=field_parameters)* * * but this does not: *cold_proj = OffAxisProjectionPlot(pf,axis,'… [View More]

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convering_grid question
by barbara ramirez Aug. 14, 2013

Aug. 14, 2013

Hello Everyone! So, I have a question about how does covering grid actually works. I have a Flash simulation output of a 28*28 Mpc box containing a cluster. I am trying to simulate the spectra from a region of size (0.08 Mpc x, 0.08 Mpc y, 28 Mpc z) around the centre, (I will assume z is my line of sight) so I use this line to define the region: #The shape of my region cube = pf.h.covering_grid(level_max, left_edge=newlep, right_edge=newrep,dims=[6, 6, 128]) where level = 5 (max level of … [View More]

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Re: [yt-users] problem with covering_grid for Nyx data sets (Wolfram Schmidt), yt-users Digest, Vol 66, Issue 17
by Wolfram Schmidt Aug. 14, 2013

Aug. 14, 2013

Hi Nathan, thanks a lot for your suggestions! I updated yt to the current development version, which didn't fix the problem. So I tried what you suggested: On 08/06/2013 07:52 PM, yt-users-request(a)lists.spacepope.org wrote: > and then try your script again. If the issue isn't fixed by updating, I > would then try applying the following diff to the nyx frontend: > > diff -r f936432ed45d yt/frontends/nyx/data_structures.py > --- a/yt/frontends/nyx/data_structures.py Tue … [View More]

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