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

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@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@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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