[yt-users] take_log for plots?

[Nathan Goldbaum]

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)
pf.h
pf.field_info["Density"].take_log=False
pc = PlotCollection(pf)
pc.add_slice('Density',0)
etc...

should work.

Nathan Goldbaum
Graduate Student
Astronomy & Astrophysics, UCSC
goldbaum at ucolick.org
http://www.ucolick.org/~goldbaum

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:
> 
> pf.field_info["density"].take_log=False
>            pc = PlotCollection(pf)
>            p = pc.add_ray([pf.domain_left_edge[0],0,0], [pf.domain_right_edge[0],0,0], "density")
>            etc...
> 
> -Andrew Myers
> 
> On Tue, Jan 17, 2012 at 3:58 PM, John ZuHone <jzuhone at milkyway.gsfc.nasa.gov> 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.
> 
> Best,
> 
> John
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