simpeg.electromagnetics.static.spectral_induced_polarization.survey.Survey.survey_type# property Survey.survey_type# survey_type has been removed. Survey type; one of {“dipole-dipole”, “pole-dipole”, “dipole-pole”, “pole-pole”} Returns: strSurvey type; one of {“dipole-dipole”, “pole-dipole”, “dipole-pole”, “pole-pole”}