Re: [yt-users] camera question

Hi Michael and Nathan, Thanks for the help! Michael, everywhere I have been looking in the documentation it says for alpha: "The alpha value height for each Gaussian. If not supplied, it is set as 1.0 everywhere." ( http://yt-project.org/docs/dev/reference/api/generated/yt.visualization.volu...) Can you send me a link to what you are referring to so I can try and figure out which applies? Nathan, that is what I get for not scrolling to the bottom of the page! I will play around with this. -Stephanie On Fri, May 23, 2014 at 11:09 AM, Michael Zingale < michael.zingale@stonybrook.edu> wrote:

My guess is that you need to play with the alpha values when you add_layers. From the docs, if you don't supply alpha, it is:

"The alpha value height for each Gaussian. If not supplied, it is calculated as the logspace between -2.0 and 0.0"

so it looks like the last value you add will have alpha = 1, i.e. opaque.

On Fri, May 23, 2014 at 10:57 AM, Stephanie Tonnesen wrote:

...

Hi all,

I am trying to make a nice volume rendering, and am having some trouble. My camera commands are: tf = ColorTransferFunction((-29,-24)) tf.add_layers(8,w=0.1,colormap="Hue Sat Value 2") tf.sample_colormap(-26.5,w=0.02,colormap="Hue Sat Value 2") cam = pf.h.camera([0.0,2.,1.8],[0.0,-1.0,-0.2],4.0,512,tf) cam.show()

I will attach the image, also (v11). First, when I use add_layers, can I get yt to print out WHERE the layers are? Second, but related, when I just use add_layers I only see the higher density gas. I have to add sample_colormap to see lower density gas (the blue stuff). Compare v11 to v6 to see what I am talking about.

Thanks!

Stephanie

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