[yt-users] Creating a projection for a derived particle field

[José Mauricio Utreras]

Hi yt users!

Does anybody know how to create a projection for particles using another
field rather than "particle_mass"?

I was using this:

proj = ds.proj('density', 2,data_source=disk_dd,method='sum')
frb = proj.to_frb(width, res, center=[0.5,0.5,0.5])
M_star=frb[('deposit', 'young_stars_mass')].in_units('Msun')

But now I would like to do this with a particle mass field that depends on
the characteristic timescales of the particles rather than the default
field.
Cheers!

José Utreras
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