Equilibrium data

Parse a VMEC INDATA namelist and map a birth-rate field onto the wall in flux coordinates.

Stellarator and tokamak equilibria arrive as data files, never as something Nucleide solves: a classic-netCDF wout file carries the Fourier geometry and an &INDATA namelist carries the input switches. The data layer reads both (HDF5 variants convert caller-side first) and maps caller birth-rate fields onto the wall in flux coordinates.

The demo below parses an editable &INDATA block — grammar only, nothing is solved — and maps a uniform birth-rate field onto a small wall grid so the conservation shape is visible. All values are synthetic.

Further reading

• Theory: Equilibrium data
• Crate docs: crates/equilib-io/src/lib.rs