Sorry for replying to an old thread, but I want to note that you need to instantiate the hierarchy before messing with field_info

Something like:

pf = load(Filename)
pc = PlotCollection(pf)

should work.

Nathan Goldbaum
Graduate Student
Astronomy & Astrophysics, UCSC

On Jan 17, 2012, at 6:16 PM, Andrew Myers wrote:

Hi John,

I don't know if there's a better way, but I usually do this by overriding the default in my script before making my plot, like so:

           pc = PlotCollection(pf)
           p = pc.add_ray([pf.domain_left_edge[0],0,0], [pf.domain_right_edge[0],0,0], "density")

-Andrew Myers

On Tue, Jan 17, 2012 at 3:58 PM, John ZuHone <> wrote:
Hi all,

A rather simple question that I should probably already know the answer to, but here goes:

Many fields are logged by default, which is as it should be. However, sometimes the range of the variable is not very large and a log plot just doesn't make a lot of sense.

In a slice or a projection plot in a PlotCollection, how does one suppress (or, in the opposite case, enable) the logging of the plotted variable before saving or displaying the plot?

I'm hoping there's a semi-easy way to do this without setting take_log in the field definition, but I've not come across it  yet.


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