[yt-users] log scale image for zero dynamic range

[Nathan Goldbaum]

Ah, thanks for the report - I replied hastily before getting on a
plane without looking at the source.

I'll look at this tomorrow.

Nathan

On Saturday, May 17, 2014, Chang-Goo Kim <cgkim at astro.princeton.edu> wrote:

> Hi Nathan,
>
> I did set the limits explicitly, but yt switches colorer before it saves.
> See below for the link for my source code and the last part of error
> message.
>
> Chang-Goo
>
>
> http://paste.yt-project.org/show/4645/
>
>
> yt : [INFO     ] 2014-05-17 23:29:15,766 Making a fixed resolution buffer
> of (('gas', 'pok')) 512 by 512
>
> yt : [INFO     ] 2014-05-17 23:29:15,780 Making a fixed resolution buffer
> of (('athena', 'density')) 512 by 512
>
> yt : [INFO     ] 2014-05-17 23:29:15,795 Making a fixed resolution buffer
> of (('gas', 'nH')) 512 by 512
>
> yt : [INFO     ] 2014-05-17 23:29:15,810 Making a fixed resolution buffer
> of (('gas', 'density')) 512 by 512
>
> yt : [INFO     ] 2014-05-17 23:29:15,825 Making a fixed resolution buffer
> of (('gas', 'temp')) 512 by 512
>
> yt : [INFO     ] 2014-05-17 23:29:15,839 Making a fixed resolution buffer
> of (('athena', 'pressure')) 512 by 512
>
> yt : [INFO     ] 2014-05-17 23:29:15,854 Making a fixed resolution buffer
> of (('gas', 'pressure')) 512 by 512
>
> yt : [WARNING  ] 2014-05-17 23:29:15,889 Plot image for field ('gas',
> 'nH') has zero dynamic range. Min = Max = 3.
>
> yt : [WARNING  ] 2014-05-17 23:29:15,889 Switching to linear colorbar
> scaling.
>
> yt : [WARNING  ] 2014-05-17 23:29:16,364 Plot image for field ('gas',
> 'nH') has zero dynamic range. Min = Max = 3.
>
> yt : [WARNING  ] 2014-05-17 23:29:16,364 Switching to linear colorbar
> scaling.
>
> yt : [INFO     ] 2014-05-17 23:29:17,385 Saving plot
> /scratch/gpfs/changgoo/sntest_TI/png/n2_SN_dx2_L256_TE_multi_fm3/n2_SN_dx2_L256_TE_multi_fm3.0000_Slice_z_temp.png
>
> yt : [INFO     ] 2014-05-17 23:29:17,916 Saving plot
> /scratch/gpfs/changgoo/sntest_TI/png/n2_SN_dx2_L256_TE_multi_fm3/n2_SN_dx2_L256_TE_multi_fm3.0000_Slice_z_nH.png
>
>
>
>
> On Sat, May 17, 2014 at 7:50 PM, Nathan Goldbaum <nathan12343 at gmail.com<javascript:_e(%7B%7D,'cvml','nathan12343 at gmail.com');>
> > wrote:
>
>> Hi Chang-Goo
>>
>> If you explicitly set the limits of the colorbar using the set_zlim
>> function you will avoid the zero dynamic range check.  That will also keep
>> the colorbar limits the same from frame to frame.
>>
>> Nathan
>>
>>
>> On Saturday, May 17, 2014, Chang-Goo Kim <cgkim at astro.princeton.edu<javascript:_e(%7B%7D,'cvml','cgkim at astro.princeton.edu');>>
>> wrote:
>>
>>> Hi all,
>>>
>>> When initial condition is uniform, it has zero dynamic range. Although
>>> it has no dynamic range, sometimes I need to plot it with log scale
>>> colorbar to make a movie with the same colorbar for later times. But, yt
>>> forced switch to linear colorbar. How can I make yt not to do that.
>>>
>>> Thanks,
>>>
>>> Chang-Goo
>>>
>>
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>>
>>
>
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