Allow inner radius in `CylindricalSymGrid`

zwicker-group / py-pde

Python package for solving partial differential equations using finite differences.

https://py-pde.readthedocs.io

MIT License

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Closed david-zwicker closed 1 year ago

david-zwicker commented 1 year ago

Change the CylindricalSymGrid such that an inner core is allowed, analogously to PolarSymGrid. This was discussed in https://github.com/zwicker-group/py-pde/discussions/418#discussioncomment-6067148.