ELPOS provides electrode positions in 2-D according to [1] [YX,code]=elpos(Label); see also: ELPOS3 Reference(s): [1] FEF: File Exchange Format for Vital Signs - Normative Annex A (Normative). The Medical Data Information Base (MDIB), Nomenclature, Data Dictionary and Codes Table A.6.3: Nomenclature and Codes for Electrode Sites for Electroencephalography according to the International 10-20 system. CEN/TC251/PT-40 (2001)