On Wed, Nov 11, 2015 at 2:27 PM, Stephanie Tonnesen <stonnes@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.

I don't think there's an easy way to do this right now. We don't have good support for manipulating projected quantities in the same way as volumetric quantities. I would probably do this by manually plotting the product of the image arrays for each quantity.

2) Can I create a projection plot, or map along a line of sight, of the peak value of a variable?

This one's much easier, you want to specify proj_style='mip' (short for maximum intensity projection) when you create your ProjectionPlot. Projection data objects (e.g. ds.proj) take a style keyword argument that does the same thing. We should probably make that API more uniform...

-Nathan

Thanks for any help,
Stephanie

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

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