Complex sources

• Strength input for get_source_field can now be complex; it also stores now the source location and its strength and moment.

• get_receiver can now take entire Field instances, and returns in that case (fx, fy, fz) at receiver locations.

• Krylov subspace solvers:

  • Solver now finishes in the middle of preconditioning cycles if tolerance is reached.
  • Solver now aborts if solution diverges or stagnates also for the SSL solvers; it fails and returns a zero field.
  • Removed gmres and lgmres from the supported SSL solvers; they do not work nice for this problem. Supported remain bicgstab (default), cgs, and gcrotmk.

• Various small things:

  • New attribute Field.is_electric, so the field knows if it is electric or magnetic.

  • New verb-possibility: verb=-1 is a continuously updated one-liner, ideal to monitor large sets of calculations or in inversions.

  • The returned info dictionary contains new keys:

    • runtime_at_cycle: accumulated total runtime at each cycle;
    • error_at_cycle: absolute error at each cycle.

  • Simple __repr__ for TensorMesh, Model, Fourier, Time.

• Bugfixes:

  • Related to get_hx_h0, data_write, printing in Fourier.