[yt-users] Define a derived field of disk surface density
suoqing at physics.ucsb.edu
Mon Mar 17 23:24:13 PDT 2014
I’m working on FLASH 3D Cartesian AMR data, and would like to define a derived field of surface density, so I can use surface density field to calculate other derived fields.
My current script does give desired results (slice_y: http://i.imgur.com/XigIYJc.png slice_z: http://i.imgur.com/kA2Fmlt.png, and the disk is cut from original data). However, it’s extremely inefficient, because I cast a ray through disk height for every cells located on x-y plane surface of each AMR block.
So is there any clever way to define surface density as a derived field in YT, as what the figures attached show? Or some way without defining surface density as a derived field, but I can get access to surface density values when computing other derived fields?
Thanks a lot!
Department of Physics
University of California, Santa Barbara
CA 93106, USA
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