[yt-users] error on volume rendering on zoom-in simulation

[mohammad safarzadeh]

Hi,
I am trying to do VR on a halo in my zoom-in region which is a dark matter
only sim, but I get a black image when I try this:

L=[1,1,1]

W=1/pf["Mpc"]

n [16]: mi,ma=region.quantities["Extrema"]("particle_density")[0]


In [17]: mi

Out[17]: 0.0


In [18]: ma

Out[18]: 4.5282895435060503e-24


In [21]: np.log10(ma)

Out[21]: -23.344065811694637


mi=-24

ma=np.log10(ma)

tf = ColorTransferFunction((mi,ma))

cam=region.pf.h.camera(c, L, W, Npixels,
tf,fields=["particle_density"],log_fields=True)


ImageArray([[[ 0.,  0.,  0.,  1.],

        [ 0.,  0.,  0.,  1.],

        [ 0.,  0.,  0.,  1.],

        ...,

        [ 0.,  0.,  0.,  1.],

        [ 0.,  0.,  0.,  1.],

        [ 0.,  0.,  0.,  1.]],


       [[ 0.,  0.,  0.,  1.],

        [ 0.,  0.,  0.,  1.],

        [ 0.,  0.,  0.,  1.],

        ...,

        [ 0.,  0.,  0.,  1.],

        [ 0.,  0.,  0.,  1.],

        [ 0.,  0.,  0.,  1.]],….


what is the mistake that I am doing?


-Regards,

Mohammad
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