Question #673124 on Yade changed:
https://answers.launchpad.net/yade/+question/673124
Bruno Chareyre proposed the following answer:
Hi,
Your script executes
"vtk.exportSpheres(useRef=True,what=[('dspl','b.state.displ()')])" once, and as
a consequence you have one vtk snapshot saved. There is no "error" here.
If you want multiple snapshots you can:
for k in range(N): #or any other control loop
O.run(M,1)
vtk.exportSpheres(useRef=True,what=[('dspl','b.state.displ()')])
or insert a PyRunner in O.engines and run as usual:
O.engines=O.engines+[PyRunner(interval=M,command="vtk.exportSpheres(useRef=True,what=[('dspl','b.state.displ()')])")]
Bruno
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