[yt-users] Problem using covering_grid as data_source for the photon_simulator

[Markus Haider]

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 <markus.haider at 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
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