New issue 673: Aritificial lines in volume-rendering with FLASH 3d data https://bitbucket.org/yt_analysis/yt/issue/673/aritificial-lines-in-volume-r... DooSoo Yoon: Hi, I have some issues that the image of volume rendering shows artificial lines https://www.dropbox.com/s/7gnrzszg2wtp60g/dens_100.png It looks that the lines are produced by misalignment between parent and child grid. Check this image with grid, https://www.dropbox.com/s/jos7g0c7hiwmmb2/dens_100_withgrid.png I'd like to figure out why this happens: whether it is caused by some bugs or I missed any options while load the FLASH data. The slice-plot shows also some NAN regions, https://www.dropbox.com/s/vsxt15mddnebbjf/dens_cut_yt.png I think it happens with same reason. Thanks, DooSoo