[yt-users] Two questions related to projections

[Stephanie Tonnesen]

Fantastic!  Thanks, these look perfect!

--
Dr. Stephanie Tonnesen
Alvin E. Nashman Postdoctoral Fellow
Carnegie Observatories, Pasadena, CA
stonnes at gmail.com

On Wed, Nov 11, 2015 at 4:58 PM, Nathan Goldbaum <nathan12343 at gmail.com>
wrote:

>
>
> On Wed, Nov 11, 2015 at 6:53 PM, Stephanie Tonnesen <stonnes at gmail.com>
> wrote:
>
>> Thank you two!  These seem to be working perfectly!  I now have what I
>> think must be a really simple question...how do I get my colorbar to be
>> evenly spaced in log?  I am typing in:
>>
>> im =
>> plt.imshow(np.array(frbd['density'])*np.array(frbt['t_soundnoA'])*np.array(frbA['gacc_z']))
>> plt.colorbar(im)
>> plt.savefig('blahblahname.png')
>>
>
> form matpotlb.colors import LogNorm
>
> im =
> plt.imshow(np.array(frbd['density'])*np.array(frbt['t_soundnoA'])*np.array(frbA['gacc_z']),
> norm=LogNorm())
> plt.colorbar(im)
> plt.savefig('blahblahname.png')
>
> There's also SymLogNorm if your colorbar contains negative values.
>
>
>>
>> and after a bit of a search have no idea what commands will actually
>> apply to imshow to get the log colorbar.
>>
>> Thanks!
>> Stephanie
>>
>> --
>> Dr. Stephanie Tonnesen
>> Alvin E. Nashman Postdoctoral Fellow
>> Carnegie Observatories, Pasadena, CA
>> stonnes at gmail.com
>>
>> On Wed, Nov 11, 2015 at 1:03 PM, Yuan Li <bear0980 at gmail.com> wrote:
>>
>>> Hi Stephanie,
>>>
>>> For the first one, I have made composite images using multiple
>>> projections. I used the FixedResolutionBuffer to get the numpy array for
>>> each projection, and combined them using imshow.
>>>
>>> Cheers,
>>> Yuan
>>>
>>> On Wed, Nov 11, 2015 at 3:27 PM, Stephanie Tonnesen <stonnes at gmail.com>
>>> wrote:
>>>
>>>> Hi yt-users,
>>>>
>>>> So I have two questions related to projections.  What I want to finally
>>>> end up with is a projection-type figure that for any point in the
>>>> projection gives me the value: (column density) * (total sound crossing
>>>> time) * (peak gravitational acceleration).  I know how to make projections
>>>> of column density and total sound crossing time, but am stuck otherwise.
>>>> So, my questions:
>>>>
>>>> 1)  Can I combine two projection plots after I make them? I do not want
>>>> the projection of column density * sound crossing time for every cell, I
>>>> want to multiply the two final outputs.
>>>>
>>>> 2)  Can I create a projection plot, or map along a line of sight, of
>>>> the peak value of a variable?
>>>>
>>>> Thanks for any help,
>>>> Stephanie
>>>>
>>>> --
>>>> Dr. Stephanie Tonnesen
>>>> Alvin E. Nashman Postdoctoral Fellow
>>>> Carnegie Observatories, Pasadena, CA
>>>> stonnes at gmail.com
>>>>
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