fix bug when there's no node to remove

qiskit-community / qiskit-metal

Quantum Hardware Design. Open-source project for engineers and scientists to design superconducting quantum devices with ease.

https://qiskit-community.github.io/qiskit-metal/

Apache License 2.0

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fix bug when there's no node to remove #790

Closed quantum-quant closed 2 years ago

quantum-quant commented 2 years ago

What are the issues this pull addresses (issue numbers / links)?

This fixes a newly discovered bug which happens when there's no node to remove in the caculation of reduced capacitance and inductance matrix. In this case, S_k should just be the identity matrix.

Did you add tests to cover your changes (yes/no)?

Did you update the documentation accordingly (yes/no)?

Did you read the CONTRIBUTING document (yes/no)?

yes