Hi Markus, ds.ortho_ray should work? http://yt-project.org/docs/dev/reference/api/generated/yt.data_objects.selec... http://yt-project.org/docs/dev/reference/api/generated/yt.data_objects.selec... But as a warning see: http://yt-project.org/docs/dev/faq/index.html#why-are-the-values-in-my-ray-o... http://yt-project.org/docs/dev/faq/index.html#why-are-the-values-in-my-ray-o... but that shouldn’t matter for photon_simulator, I don’t think. BTW, since you use this module a lot, I should probably point out here that there will be no further development of photon_simulator in yt as it is now being transitioned into a new package, pyXSIM: http://bitbucket.org/jzuhone/pyxsim http://bitbucket.org/jzuhone/pyxsim which is stable now but doesn’t have adequate documentation for me to have an official release. It will be the same software as the yt version with some minor adjustments. If you want to try it, mail me off-list and I can tell you how to install it and how to re-write your script to work with it. The version currently in yt will stay there for the time being, so no need to worry, but I will not be updating it unless there are bug reports. Best, John

On May 25, 2016, at 12:39 PM, Markus Haider wrote:

Hi John,

Thanks for your fast reply. So generally we are trying to make a mock spectrum of a galaxy cluster around the iron line. I enclosed the script I use, but maybe it is not of a big help as I just started doing this. You are probably right that I should youse ds.region. What I wanted to do is selecting a line of sight which is only one cell wide (native resolution of the simulation) but e.g. 1 Mpc deep.

Cheers, Markus

On 2016-05-25 18:28, John Zuhone wrote:

...

Hi Markus,

Can you send a script so I can figure out what you are trying to do exactly?

You probably need ds.region, but if you send a script I will know for sure.

John Z

Sent from my iPod

...

On May 25, 2016, at 12:23 PM, Markus Haider wrote:

Hi,

I wanted to use the photon simulator for mock x-ray observations on single cells and line of sights using single cells. For this I wanted to select the cells using covering_grid, but then I get the following error:

photon_simulator.py is doing delta_min, delta_max = data_source.quantities.extrema("d%s"%ax) and the result is YTDataSelectorNotImplemented: Data selector 'covering_grid' not implemented.

But maybe covering_grid is not the right thing for what I had in mind, how would you select the cells to pass as data_source to the photon simulator?

Cheers, Markus _______________________________________________ yt-users mailing list yt-users@lists.spacepope.org http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org

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On Friday, May 27, 2016, Markus Haider wrote:

Hi John,

Thanks for hinting me to ds.ortho_ray. This is what I meant :-)

Btw, For a different anaylsis I would need to understand how the yt.box command works. Does it contain all the cells which have their center between the left and right boundaries or only cells which have both their center and edges between the specified left and right boundaries?

It will contain all the cells that have centers between the left and right edge.

Cheers, Markus

On 2016-05-25 18:44, John Zuhone wrote:

Hi Markus,

ds.ortho_ray should work?

http://yt-project.org/docs/dev/reference/api/generated/yt.data_objects.selec...

But as a warning see:

http://yt-project.org/docs/dev/faq/index.html#why-are-the-values-in-my-ray-o...

but that shouldn’t matter for photon_simulator, I don’t think.

BTW, since you use this module a lot, I should probably point out here that there will be no further development of photon_simulator in yt as it is now being transitioned into a new package, pyXSIM:

http://bitbucket.org/jzuhone/pyxsim

which is stable now but doesn’t have adequate documentation for me to have an official release. It will be the same software as the yt version with some minor adjustments. If you want to try it, mail me off-list and I can tell you how to install it and how to re-write your script to work with it.

The version currently in yt will stay there for the time being, so no need to worry, but I will not be updating it unless there are bug reports.

Best,

John

On May 25, 2016, at 12:39 PM, Markus Haider javascript:_e(%7B%7D,'cvml','markus.haider@uibk.ac.at');> wrote:

Hi John,

Thanks for your fast reply. So generally we are trying to make a mock spectrum of a galaxy cluster around the iron line. I enclosed the script I use, but maybe it is not of a big help as I just started doing this. You are probably right that I should youse ds.region. What I wanted to do is selecting a line of sight which is only one cell wide (native resolution of the simulation) but e.g. 1 Mpc deep.

Cheers, Markus

On 2016-05-25 18:28, John Zuhone wrote:

Hi Markus,

Can you send a script so I can figure out what you are trying to do exactly?

You probably need ds.region, but if you send a script I will know for sure.

John Z

Sent from my iPod

On May 25, 2016, at 12:23 PM, Markus Haider javascript:_e(%7B%7D,'cvml','markus.haider@uibk.ac.at');> wrote:

Hi,

I wanted to use the photon simulator for mock x-ray observations on single cells and line of sights using single cells. For this I wanted to select the cells using covering_grid, but then I get the following error:

photon_simulator.py is doing delta_min, delta_max = data_source.quantities.extrema("d%s"%ax) and the result is YTDataSelectorNotImplemented: Data selector 'covering_grid' not implemented.

But maybe covering_grid is not the right thing for what I had in mind, how would you select the cells to pass as data_source to the photon simulator?

Cheers, Markus _______________________________________________ yt-users mailing list yt-users@lists.spacepope.org javascript:_e(%7B%7D,'cvml','yt-users@lists.spacepope.org'); http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org

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_______________________________________________ yt-users mailing list yt-users@lists.spacepope.org javascript:_e(%7B%7D,'cvml','yt-users@lists.spacepope.org'); http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org

_______________________________________________ yt-users mailing listyt-users@lists.spacepope.org javascript:_e(%7B%7D,'cvml','yt-users@lists.spacepope.org');http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org

Hi, I was wondering if there is an easy way to make a projection plot through of a yt sphere or disk. The reason would be to check whether I actually selected the data I wanted to. Cheers, Markus