[yt-dev] Transfer Function Plots
Cameron Hummels
chummels at astro.columbia.edu
Fri Jun 8 14:50:51 PDT 2012
+1 on all of those suggestions. Thanks for this addition, Sam! If you
push this, I may add a few parameters to annotate which allow for
overplotting a size scale bar and a redshift/time annotation in a corner
for use in movies.
Cameron
On 6/8/12 5:30 PM, Sam Skillman wrote:
> Matt:
>
> I'm using pylab. One thing I'm going to change is modify it so that
> it gets the resolution of the image, then sets the pylab figure size
> based off that. I'd also rather have this go through freetype, but
> the development time for that for me is >> (time left this afternoon).
> I'd be +1 to porting to freetype.
>
> This is _very_ loosely coupled to the interactive camera. I'm going
> to (right now) move it over to the general camera class, and make it
> have the API:
>
> cam.save_annotated(fn, im=None, enhance=True)
>
> This will take the filename, the previously produced image array or
> try to get the cam.image array (which exists for some variants of the
> camera), and then apply the standard deviation clipping that is
> presence in the enhance.py on the hub. I'm going to strongly
> encourage the enhance=True. I've been making movies that use the same
> normalization and have been happy with all of them.
>
> While I'm at it, I'll add a cam.save(fn, im, enhance=True) that skips
> the annotation.
>
> +/- 1 on those additions? Requests?
>
> All others: Thanks for the enthusiastic response!
>
> Sam
>
> On Fri, Jun 8, 2012 at 3:28 PM, Christopher Moody <cemoody at ucsc.edu
> <mailto:cemoody at ucsc.edu>> wrote:
>
> Beautiful, +1!
>
> chris
>
> On Fri, Jun 8, 2012 at 2:22 PM, Cameron Hummels
> <chummels at astro.columbia.edu <mailto:chummels at astro.columbia.edu>>
> wrote:
> > +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>
> >> <mailto: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>
> <mailto:goldbaum at ucolick.org <mailto:goldbaum at ucolick.org>>
> >>> http://www.ucolick.org/~goldbaum
> <http://www.ucolick.org/%7Egoldbaum>
> <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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