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') 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@gmail.com On Wed, Nov 11, 2015 at 1:03 PM, Yuan Li 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 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@gmail.com

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Fantastic! Thanks, these look perfect! -- Dr. Stephanie Tonnesen Alvin E. Nashman Postdoctoral Fellow Carnegie Observatories, Pasadena, CA stonnes@gmail.com On Wed, Nov 11, 2015 at 4:58 PM, Nathan Goldbaum wrote:

On Wed, Nov 11, 2015 at 6:53 PM, Stephanie Tonnesen 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@gmail.com

On Wed, Nov 11, 2015 at 1:03 PM, Yuan Li 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 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@gmail.com

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