Question #704551 on Yade changed:
https://answers.launchpad.net/yade/+question/704551
Status: Answered => Open
Leonard is still having a problem:
Hi Jan and Karol,
Thanks for your MWEs.
Because I use an old version of Yade (2018.02b), consequently executing the MWE
gives error: ValueError: too many values to unpack[1]. Thereby, I need to adapt
the MWE to my old verison.
I successfully adapted Karol's MWE:
# exporter.exportSpheres(ids='all',what=dict(rotation_method_1 =
'b.state.rot()',rotation_method_2 =
'(b.state.refOri.conjugate()*b.state.ori).toRotationVector() '))
###### change to
exporter.exportSpheres(ids='all',what=[('rotation_method_1','b.state.rot()'),('rotation_method_2','(b.state.refOri.conjugate()*b.state.ori).toRotationVector()')])
But I didn't make it for Jan's MWE. What I tried is:
from yade import export
import builtins # to store "data" and access them from a string command
spheres = [
sphere((0,0,0),1),
sphere((3,0,0),1),
sphere((6,0,0),1),
]
O.bodies.append(spheres)
data = [ # e.g. angle
1,
2,
3,
]
builtins.data = data # make data "global", visible in export module
vtk = export.VTKExporter("test-angle")
# vtk.exportSpheres(what=dict(angle="data[b.id]")) ## change it to
vtk.exportSpheres(ids='all',what=[('ids','b.id'),('pos','b.state.pos'),('angle','data[b.id]')])
It returns the following error:
Traceback (most recent call last):
File "/usr/bin/yade", line 182, in runScript
execfile(script,globals())
File "Jan_MWE.py", line 22, in <module>
vtk.exportSpheres(ids='all',what=[('ids','b.id'),('pos','b.state.pos'),('angle','data[b.id]')])
File "/usr/lib/x86_64-linux-gnu/yade/py/yade/export.py", line 431, in
exportSpheres
test = eval(command) # ... eval one example to see what type (float,
Vector3, Matrix3) the result is ...
File "<string>", line 1, in <module>
NameError: name 'data' is not defined
Could you please give some instructions?
Thanks
Leonard
[1]https://answers.launchpad.net/yade/+question/695966
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