[yt-users] plotting questions

[Shankar Agarwal]

Hi all,

Thanks to Andrew/Cameron, p.set_zlim and p.set_colorbar_label worked well.

Moving on, I am making a projection plot of particles using:

1. ds = yt.load(DATA_SET) # load info_file
2. p = yt.ParticleProjectionPlot(ds, 2, ['particle_mass'],
center=(0.325,0.612,0.817))
3. p.set_width((2,'Mpc'))

As you can see, I am choosing a center, and projecting all particles along
z-axis, onto the x-y within 2 Mpc width around the center. However, I would
like to do the following:

A) be able to change the "center" as many times as I prefer. Since the full
simulation data set is quite heavy, every time I change the center, it
takes about 30 minutes to get the final plot around the new center. So if I
want to change the center by even a little bit, it is a pain. Is there a
way to load the full data once, and then be able to repeat steps 2-3
quickly with different "center". I have about 200-300 "center" values
(corresponding to high density regions) I would like to explore.

B) p.show() does not pop the plot for me. I have to save it using p.save()
and then open the image. I have tried x11 and terminal. By the way, I am
running my plot script as "python myplot.py". In myplot.py do I need to
import something to display images?

Cheers,
Shankar


On Wed, Jul 29, 2015 at 6:19 PM, Andrew Myers <atmyers2 at gmail.com> wrote:

> Hi Shankar,
>
> 1. You can set range of the colorbar by doing, for example:
>
> p.set_zlim('particle_mass', 1e6, 1e8)
>
> 2. Calling it "Particle Mass" follows the yt convention for phase plots,
> but you're right that "mass per pixel" or something like that might make
> more sense. At any rate, you can change the label to whatever you want
> using, e.g.:
>
> p.set_colorbar_label('particle_mass', 'Particle mass per pixel')
>
> 3. Currently, contour callbacks are disabled for particle plots. I think
> they could be made to work, although the results might look like a mess if
> the plot pixels are sparsely populated. Is this an important feature for
> you? If so, you could add a ticket about it here
> <https://bitbucket.org/yt_analysis/yt/issues/new>, and we'll see about
> enabling this feature.
>
> Thanks,
> Andrew
>
>
>
> On Wed, Jul 29, 2015 at 8:11 AM, Shankar Agarwal <agarwalshankar at gmail.com
> > wrote:
>
>> Hi,
>>
>> I have a few plotting questions:
>>
>> 1.
>> http://yt-project.org/docs/3.2/cookbook/simple_plots.html#simple-particle-plot
>>
>> p.set_unit('particle_mass', 'Msun')
>>
>> In the above plot, Colorbar range is approximately Mass=10^5-10^9. When
>> making a plot using ParticlePlot or ParticleProjectionPlot, can I manually
>> force the range on the colorbar?
>>
>> 2. The label on the colorbar says "Particle Mass". Instead, shouldn't it
>> be saying something like mass_per_pixel, since the plot is showing the
>> total number of particles projected along the z-axis? How can we rename the
>> colorbar?
>>
>> 3. Can contours of mass be added to the above plot, using annotate?
>>
>> Regards,
>> Shankar
>>
>>
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>>
>
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