[yt-dev] Transfer Function Plots

[Cameron Hummels]

+1e6!  I need to use something like this right now! :)  Great work, Sam!

On 6/8/12 5:06 PM, Sam Skillman wrote:
> Okay, I've prototyped something that works like this:
>
> interactive_camera.snapshot()
> ...pops up interactive matplotlib window...
> interactive_camera.save('test.png')
> ...grabs all needed information and makes this...
>
> Inline image 1
>
> +/- 1?  It just needs some cleanup, like reducing the extent of the 
> colorbar so you don't get the black strip at the top and bottom of the 
> image.
>
> Sam
>
> On Fri, Jun 8, 2012 at 2:12 PM, Richard P Wagner <rpwagner at sdsc.edu 
> <mailto:rpwagner at sdsc.edu>> wrote:
>
>
>     On Jun 8, 2012, at 12:40 PM, Nathan Goldbaum wrote:
>
>>     I'd prefer it if the transfer function plot were split into two
>>     separate frames.  Right now, it's easy to think that the black
>>     background color image contains opacity information since the
>>     frame is plotted with a y axis.  I'd prefer it if only the white
>>     line was plotted with a y axis and the black background image was
>>     plotted in a separate frame like a color bar with no y axis.
>>      This would also let the user see the tick marks for the opacity
>>     plot much more easily.
>>
>>     In general, I like plotting the transfer function like a color
>>     bar (sort of like Stella Offner's image on the yt homepage
>>     [http://yt-project.org/img/offner_etal.png]).
>
>     That's what came to mind when I was reading this. For a while,
>     we've been putting a combination color bar-transfer function
>     graphic in our renderings with ANL (skip about 30 seconds into
>     http://www.youtube.com/watch?v=5dOt0IaRY4U). I think it's very
>     natural to overlay a transfer function plot onto a color bar, and
>     it provides a lot of information in a simple fashion.
>
>     --Rick
>
>>
>>     Nathan Goldbaum
>>     Graduate Student
>>     Astronomy & Astrophysics, UCSC
>>     goldbaum at ucolick.org <mailto:goldbaum at ucolick.org>
>>     http://www.ucolick.org/~goldbaum <http://www.ucolick.org/%7Egoldbaum>
>>
>>     On Jun 8, 2012, at 12:34 PM, Sam Skillman wrote:
>>
>>>     Hi all,
>>>
>>>     I've been experimenting with different ways to plot the transfer
>>>     functions, and in particular in the context of the
>>>     InteractiveCamera.
>>>
>>>     What are people's thoughts about this behavior:
>>>
>>>     http://i.imgur.com/CGZ7Z.png
>>>     http://i.imgur.com/OCsVt.jpg
>>>     http://i.imgur.com/VNEse.png
>>>
>>>     btw, you can get this behavior by changing your script to call
>>>     pf.h.interactive_camera, and then running in ipython with a
>>>     working matplotlib backend.
>>>
>>>     I'll let Nathan bring up his concerns rather than me try to
>>>     convey them.
>>>
>>>     Sam
>>>
>>>
>>>
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