Hi,There are several ways, but assuming you have vtk files as in the example herethis function returns a dictionary of specified variables:def get2DAthenaData(vtk_file,variables):data = {}ds = yt.load(vtk_file)gs = ds.index.select_grids(ds.index.max_level)grid = gs[0] #assuming SMR wasn't used
for var in variables:data[var] = grid[var][:,:,0]return dataExample usage:data = get2DAthenaData('kh.0010.vtk', ['density','pressure','vorticity_z'])rho = data['density']p = data['pressure']w = data['vorticity_z']So if you just want to have access to 1D profiles to compare with a 1D solution, rho[:,0] would be the 1D density profile along x at the first y index.If you instead want to make 2D images, you can just generate the dataset ds and then look into FixedResolutionBuffer.
-TimOn Sat, Nov 29, 2014 at 12:51 PM, almog yalin <almog.yalin@gmail.com> wrote:_______________________________________________AlmogThanks in Advance,Hi.I ran a 2D simulation with Athena and exported the data to vtk files. I was even able to load the file with yt and inspect some of its elements. What I would like to do is to compare the density from the simulation to an analytic solution (which I can evaluate at the grid points). The problem is I cannot figure out how to extract the relevant information from the yt.frontends.athena.data_structures.AthenaDataset object. What I expect are 2d arrays of the x coordinate, y coordinate and density.
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