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FiffChInfo

Namespace: FIFFLIB  ·  Library: FIFF Library

#include <fiff/fiff_ch_info.h>

class FIFFLIB::FiffChInfo

Per-channel FIFF descriptor: identifiers, kind, calibration, coil type, channel-frame coil position and SI unit.

Holds the exact field set of the on-disk fiffChInfoRec: scanno, logno, kind, range, cal, coil_type, the embedded FiffChPos coil location, unit and unit_mul. The ch_name string lives next to the record because the FIFF stream stores it as a separate FIFF_CH_NAME tag in modern files.

Public Methods​

FiffChInfo()​

Constructs the channel info descriptor.

FiffChInfo(p_FiffChInfo)​

Copy constructor.

Parameters:

  • p_FiffChInfo : const FiffChInfo & Channel Info descriptor which should be copied.

~FiffChInfo()​

Destroys the channel info descriptor.

isValidEeg()​

Check whether this channel has a valid EEG electrode position.

A channel is a valid EEG channel if its kind is FIFFV_EEG_CH, its electrode position is not at the origin, and its coil type is not FIFFV_COIL_NONE.

Returns:

  • bool — true if this is a valid EEG channel with proper electrode location.

Static Methods​

storageSize()​

Size of the old struct (fiffChInfoRec) 20int + 16 = 204 + 16 = 96.

Returns:

  • qint32 — the size of the old struct fiffChInfoRec.

checkEegLocations(chs, nch)​

Check that all EEG channels in the list have reasonable (non-origin) locations.

Formerly mne_check_chinfo (MNE C).

Parameters:

  • chs : const QList< FiffChInfo > & The list of channel info structures to check.

  • nch : int The number of channels to check.

Returns:

  • bool — true if all EEG channels have valid locations, false otherwise.

Authors of this file​