edfhed(1)							     Aghermann								 edfhed(1)

NAME

	    edfhed -- EDF header dumper/editor.

SYNOPSIS

	    edfhed [OPTIONS] file.edf ...

DESCRIPTION

       edfhed  is a terminal program to view the header of EDF files (with option -b, or none), or modify fields in the header (see options -s, -T
       and -R).

       -b, --no-channels
	      Only dump general header fields (no channel details).

       -R, --from-tree
	      Given file location Subject/Session/Episode.edf, set recording_id to 'Session/Episode' and patient_id to 'Subject'.

       -T, --from-mtime
	      Set 'recording_date' and 'recording_time' fields to file modification date/time.

       -t, --touch-mtime
	      Set file mtime to timestamp assembled from 'recording_date' and 'recording_time' fields (assuming local timezone).

       -s, --set=[CH:]FIELD:VALUE
	      Set FIELD to VALUE (in channel CH if specified, as a 1-based integer index).

	      Possible general fields are: version_number (if it ain't broke, don't touch it), patient_id, recording_id,  recording_date,  record-
	      ing_time, reserved (remember that the contents of this field is significant wrt EDF/EDF+ distinction).

	      Channel  fields:	label,	transducer_type,  physical_dim,  physical_min,	physical_max,  digital_min,  digital_max,  filtering_info,
	      reserved.

	      Direct field assignment done via --set option(s) will override any assignments effected by options -T or -R.

       -?, --help
	      Give this help list

       --usage
	      Give a short usage message

USE WITH AGHERMANN

       For Aghermann to be able to manage an EDF file, all relevant fields in its header must be filled out correctly, as folllows:

       o      patient_id uniquely identifies the Subject;

       o      recording_id identifies the recording session (out of several other such sessions, each containing the same series of episodes)  and
	      the individual episode.  These two items must appear in one of the following combinations:

	   o	  "Session/Episode"

	   o	  "Session : Episode"

	   o	  "Episode (Session)"

       o      recording_date and recording_time must (obviously) be both correct.

       o      Channel labels must be a valid System 10-20 channel designation, i.e., "Nz", "Fp1", "Fpz", "Fp2", "AF7", "AF3", "AFz", "AF4", "AF8",
	      "F9", "F7", "F5", "F3", "F1", "Fz", "F2", "F4", "F6", "F8", "F10", "FT9", "FT7", "FC5", "FC3", "FC1", "FCz",  "FC2",  "FC4",  "FC6",
	      "FCT8",  "FT10",	"A1",  "T9", "T7", "C5", "C3", "C1", "Cz", "C2", "C4", "C6", "T8", "T10", "A2", "TP9", "TP7", "CP5", "CP3", "CP1",
	      "CPz", "CP2", "CP4", "CP6", "TP8", "TP10", "P9", "P7", "P5", "P3", "P1", "Pz", "P2", "P4", "P6", "P8", "P10", "PO7",  "PO3",  "POz",
	      "PO4", "PO8", "O1", "Oz", "O2", "Iz", plus a few channels of other signal types: "Left", "Right", "Chin",

	      optionally  prepended  by signal type ("EEG", "EOG", "EMG", "ECG", "ERG", "NC", "MEG", "MCG", "EP", "Temp", "Resp", "SaO2", "Light",
	      "Sound", "Event", "Freq") and a space.

SEE ALSO

       aghermann(1), edfhed-gtk(1).

AUTHOR

       edfhed is written by Andrei Zavada <johnhommer@gmail.com> as part of the Aghermann project.

0.6.0.1 							    2012-06-04								 edfhed(1)