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[Jan Stránský <question255437@xxxxxxxxxxxxxxxxxxxxx>]

Question #255437 on Yade changed:
https://answers.launchpad.net/yade/+question/255437

    Status: Open => Answered

Jan Stránský proposed the following answer:
Hi Shailesh,

>
> yade.export.textExt(konda1,format='x_y_z_r',comment=" ",mask=-1,attrs=[])
> error: Attribute error
>

In the case of similar errors, please always give us more details, i.e.
full error message and also some info about your variables (like what
'konda1' is). It will help us solve your problem more quickly :-)

Concerning periodic boundary conditions, you may also call it periodic
contact detection. There is a nice section in 'DEM formulation' section in
docs [1]. All particles are in the simulation physically just once, but
collisions are detected also with periodic images of other particles. Thus
there is nothing like edge particles and you would need some manual
postprocessing if you need such information.

Concerning SpherePack, you can use toList or other approaches to extract
info into a list and then do whatever you want with the values, see [2].
Just to complete the toSimulation answer.

Cheers
Jan

[1]
https://yade-dem.org/doc/formulation.html#collision-detection-in-periodic-cell
[2] https://yade-dem.org/doc/yade.pack.html#yade._packSpheres.SpherePack
Dne 7.10.2014 5:51 "skonda2" <question255437@xxxxxxxxxxxxxxxxxxxxx>
napsal(a):

> Question #255437 on Yade changed:
> https://answers.launchpad.net/yade/+question/255437
>
>     Status: Answered => Open
>
> skonda2 is still having a problem:
> Yes! I did that, in the controller and primary view window, i can see
> the packing generated. How to export the co-ordinate position and radius
> of all the spheres in the packing including those on the edges? I am not
> sure how to apply this command:
>
> yade.export.textExt(konda1,format='x_y_z_r',comment=" ",mask=-1,attrs=[])
> error: Attribute error
>
> Is there something am missing in the format?
>
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