convert_grass_scoring

convert_grass_scoring(fname)

CONVERT_GRASS_SCORING Extract sleep stages and notation from a GRASS CSV text file

Usage:

[stages, notation, start_time] = convert_grass_scoring(fname)

Inputs:

fname : char - path to GRASS comment/scoring CSV – required

Outputs:
stagesstruct with fields

  • stage : 1xN double - stage code (5=Wake, 4=REM, 3=N1, 2=N2, 1=N3, 0=Other)

  • time : 1xN double - stage onset time in seconds from recording start

notationstruct with fields

  • time : 1xM double - annotation times in seconds

  • text : 1xM cell of char - annotation text

start_time : 1x3 double - [hour minute second] of first timestamp in file

Notes

Time stamps are parsed with datetime using ‘HH:mm:ss’ and wrap across midnight via cumulative modulo of the time-of-day differences.

See also: readgrassstaging, read_staging

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