fiff_write_raw_segment_times.m
2cb18aae5832master

fiff_write_raw_segment_times.m
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			function fiff_write_raw_segment_times(fname, raw, from, to, sel, drop_small_buffer, buffer_size_sec)
			% FIFF_WRITE_RAW_SEGMENT_TIMES Write chunck of raw data to disk
			% [] = FIFF_WRITE_RAW_SEGMENT_TIMES(FNAME, RAW, FROM, TO, SEL)
			%
			% The functions reads data from a file specified by raw
			% which is obtained with fiff_setup_read_raw
			%
			% fname - the name of the file where to write
			% raw - structure returned by fiff_setup_read_raw
			% from - starting time of the segment in seconds
			% to - end time of the segment in seconds
			% sel - optional channel selection vector
			% drop_small_buffer - optional bool to say if the last data buffer is dropped
			% to make sure all buffers have the same size
			% (required by maxfilter)
			% buffer_size_sec - float (size of data buffers in seconds)

			%
			% Author : Alexandre Gramfort, MGH Martinos Center
			% License : BSD 3 - clause
			%

			global FIFF;
			if isempty(FIFF)
			FIFF = fiff_define_constants();
			end
			%
			me = 'MNE:fiff_write_raw_segment';
			%
			if nargin < 2
			error(me, 'Incorrect number of arguments');
			end
			if nargin < 3 \| isempty(from)
			from = raw.first_samp / raw.info.sfreq;
			end
			if nargin < 4 \| isempty(to)
			to = raw.last_samp / raw.info.sfreq;
			end
			if nargin < 5
			sel = 1:raw.info.nchan;
			end
			if nargin < 6
			drop_small_buffer = false;
			end
			if nargin < 7
			buffer_size_sec = 25;
			end

			buffer_size = ceil(buffer_size_sec * raw.info.sfreq);

			%
			%
			% Convert to samples
			%
			from = floor(from * raw.info.sfreq);
			to = ceil(to * raw.info.sfreq);

			fiff_write_raw_segment(fname, raw, from, to, sel, drop_small_buffer, buffer_size);