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**(9 march 2016) this project is continued on github : http://jaapkroe.github.io/polypy **

Python script to analyze (shortest-path) rings in structures read from xyz-files. It can be useful for example to identify defects in crystal structures or molecules.

polypy Web Site


  • Shortest-path ring search using Franzblau statistics [Phys. Rev. B 44, 4925]
  • Output structures marked for visualization (see screenshots)
  • detect subgraphs; defect clusters; atom chains; neighbor shells
  • Progress bars!


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Additional Project Details

User Interface

Console/Terminal, Command-line

Programming Language

Unix Shell, Python



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