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[nobody <question685223@xxxxxxxxxxxxxxxxxxxxx>]

Question #685223 on Yade changed:
https://answers.launchpad.net/yade/+question/685223

    Status: Answered => Open

nobody is still having a problem:
Hi Jan, Robert,

thank you guys give me the suggestions.

right now I can export the position, radius, and the nine components per particle stress. I named these variables as 
(x,y,z,r,s11,s22,s33,s44,s55,s66,s77,s88,s99)

as reference [1] mentioned that we can use export.VTKExporter to export
the stress.

exportSpheres(ids='all', what={}, comment='comment', numLabel=None,
useRef=False)

in this command, we need to set the what ={},

I wrote the code like this :

from yade import ymport, export
import numpy as np
vtk = export.VTKExporter("stress")
i = 0
number_of_txtfiles = 100
while i < number_of_txtfiles:
	O.bodies.append(ymport.text("./num"+str(i)+".txt"))
	TW = TesselationWrapper()
	TW.triangulate()
	TW.computeVolumes()
	TW.setState
	vtk.exportSpheres(ids='all',what=[('stress',"numpy.array([s11,s22,s33],[s44,s55,s66],[s77,s88,s99])")],useRef=False)   #####  this line 
	i = i +1
###################

I know there are some problems with (##### this line). Because the
command mentioned that, for the" what " parameter we need to do as this
reference[2] said.

 what=dict(particleVelocity='b.state.vel',dist='b.state.pos.norm()', ...
)

since I already output the particle information. how can I relate this information to this command (vtk.exportSpheres)
Because in the "what" parameter, I need to set the b attribute.


thanks in advance.

best,
yong



but right now how can I input the nine components in the vtk.exportSpheres  command, especially in the 



[1]https://yade-dem.org/doc/user.html#microstressandmicrostrain
[2]https://yade-dem.org/doc/yade.export.html?highlight=exportspheres#yade.export.VTKExporter.exportSpheres

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