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@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, and we'll see about enabling this feature. 

Thanks,
Andrew


On Wed, Jul 29, 2015 at 8:11 AM, Shankar Agarwal <agarwalshankar@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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