Improve plot spectra ns3d
Many curves on one figure, at least:
- E_K(k_h)
- E_K(k_z)
- E_A(k_h)
- E_A(k_z)
- E_Kr(k_h)
- E_Kr(k_z)
This instance was upgraded to Heptapod 17.7.0rc1 on 2025-01-23
All legacy (hg-git based) Projects will be automatically migrated to native starting with the upgrade of 2025-01-23
Many curves on one figure, at least: