[yt-users] set_zlim( ) is giving error

[Reju Sam John]

Dear all,
I am using the following code to create a slice plot of Temperature with a
fixed temperature scale (1e4,5e7).
pf = load(fn)
pc = PlotCollection(pf)
p=pc.add_slice("Temperature", 2).set_log_field(False)
p.set_zlim(1e4,5e7).save()

but I am getting following error

p.set_zlim(1e4,5e7).save()
AttributeError: 'NoneType' object has no attribute 'set_zlim'

Please suggest me solution.
Thank You,


-- 
Reju Sam John
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