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[Christian Jakob <question219806@xxxxxxxxxxxxxxxxxxxxx>]

Question #219806 on Yade changed:
https://answers.launchpad.net/yade/+question/219806

    Status: Open => Answered

Christian Jakob proposed the following answer:
dear liqing jiao,

i ran your script and here are the problems:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "jiao-problem.py", line 76, in checkStress
    print 'mean stress', stress.trance()/3.
AttributeError: 'Matrix3' object has no attribute 'trance'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "jiao-problem.py", line 97, in addData
    b.shape.color=utils.scalarOnColorScale(b.stat.rot().norm(),0,pi/2.)
AttributeError: 'Body' object has no attribute 'stat'

the second one is easy to fix: use b.state.rot() instead of b.stat.rot()
in line 97 ...

for the first error trance() is no valid command. I think you can
replace line 76 with:

        print 'mean stress', ( (stress[0,0] + stress[1,1] + stress[2,2])
/ 3. )

hope it helps,

christian

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