[yt-users] Plot Rotation

Nathan Goldbaum nathan12343 at gmail.com
Wed May 20 01:32:20 PDT 2015


On Wednesday, May 20, 2015, Max Katz <maxpkatz at gmail.com> wrote:

> Just want to add that this functionality is something I recently found a
> need for. Is it perhaps possible to generate the camera object first,
> rotate it, and then take a slice?
>

We were talking about slices and projections earlier in this thread, there
is no camera in those cases. The problem there is that the plot layouts are
hard-coded to some degree and someone would need to generalize the layout
logic to handle horizontal colorbars.  It's not *too* complicated, but care
needs to be taken to ensure plots look good in as many cases as possible.
As with most improvements we want to make, we're limited by contributor
time.

Just in case you're interested in hacking on yt internals, the layout code
in question is here:

https://bitbucket.org/yt_analysis/yt/src/369077df8a967253dc53969430550b0c30c535be/yt/visualization/base_plot_types.py?at=yt#cl-170

This is called when we set up each individual plot in one of the image plot
containers defined in yt/visualization/plot_window.py.

Axis-aligned slices and projections need to be locked to the coordinate
axes, but off-axis slices and projections as well as volume
renderings  allow arbitrary rotation of the image plane. This works right
now.

While it would be nice if yt's plotting code could make "nice" plots out of
the box for any kind of data thrown at it, that is not the case right now.
That's one of the reasons why we expose everything you need to make a
custom plot based on the image buffers returned by a FixedResolutionBuffer
object.


>
> Max Katz
> Ph.D. Candidate, Department of Physics and Astronomy
> Vice President, Graduate Student Organization
> Stony Brook University
> http://astro.sunysb.edu/mkatz/
>
> On Mon, May 18, 2015 at 11:37 AM, Nathan Goldbaum <nathan12343 at gmail.com
> <javascript:_e(%7B%7D,'cvml','nathan12343 at gmail.com');>> wrote:
>
>>
>>
>> On Monday, May 18, 2015, Jason Galyardt <jason.galyardt at gmail.com
>> <javascript:_e(%7B%7D,'cvml','jason.galyardt at gmail.com');>> wrote:
>>
>>> Hi all,
>>>
>>> Is there a convenient way to rotate a slice or projection plot (with
>>> associated axis labels and tick marks) in yt? My simulation domain is long
>>> and skinny, and yt automatically plots it with the long edge aligned
>>> horizontally; I'd like to rotate these 2D plots by 90 degrees.
>>>
>>
>> I've wanted to add the ability to select the color at orientation for a
>> while now, but right now the colorbar os assumed to be vertical.
>>
>>
>>>
>>>
>>> I've combed through the docs and the only way I can think to do it would
>>> be to create a fixed resolution buffer and then manipulate it via
>>> matplotlib functions. The camera seems only applicable for 3D (and doesn't
>>> paint the axes, so far as I can tell).
>>>
>>
>> This is likely the easiest way to do it right now.
>>
>>  http://yt-project.org/docs/dev/visualizing/manual_plotting.html
>>
>>
>>> Any ideas or pointers to docs?
>>>
>>> Thanks,
>>>
>>> Jason
>>>
>>> ----
>>> Jason Galyardt
>>> jeg at uga.edu
>>> Department of Physics and Astronomy
>>> University of Georgia
>>>
>>
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