pyrokinetics.databases.imas.get_nonlinear_fields# pyrokinetics.databases.imas.get_nonlinear_fields(gk_output)[source]# Retreives full 4D nonlinear fields(kx, ky, theta, time) Parameters: gk_output (GKOutput) – Pyrokinetics GKOutput loaded with data Returns: fields_4d – 4D fields GK IDS Return type: gkids.GyrokineticsFieldsNl4D