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

[Chang-Goo Kim]

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>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>
> 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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