fiff_write_raw_segment_times

   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)

0001 function fiff_write_raw_segment_times(fname, raw, from, to, sel, drop_small_buffer, buffer_size_sec)
0002 %   FIFF_WRITE_RAW_SEGMENT_TIMES   Write chunck of raw data to disk
0003 %       [] = FIFF_WRITE_RAW_SEGMENT_TIMES(FNAME, RAW, FROM, TO, SEL)
0004 %
0005 %   The functions reads data from a file specified by raw
0006 %   which is obtained with fiff_setup_read_raw
0007 %
0008 % fname              - the name of the file where to write
0009 % raw                - structure returned by fiff_setup_read_raw
0010 % from               - starting time of the segment in seconds
0011 % to                 - end time of the segment in seconds
0012 % sel                - optional channel selection vector
0013 % drop_small_buffer  - optional bool to say if the last data buffer is dropped
0014 %                      to make sure all buffers have the same size
0015 %                      (required by maxfilter)
0016 % buffer_size_sec    - float (size of data buffers in seconds)
0017 
0018 %
0019 %   Author : Alexandre Gramfort, MGH Martinos Center
0020 %   License : BSD 3 - clause
0021 %
0022 
0023 global FIFF;
0024 if isempty(FIFF)
0025     FIFF = fiff_define_constants();
0026 end
0027 %
0028 me = 'MNE:fiff_write_raw_segment';
0029 %
0030 if nargin < 2
0031     error(me, 'Incorrect number of arguments');
0032 end
0033 if nargin < 3 | isempty(from)
0034     from = raw.first_samp / raw.info.sfreq;
0035 end
0036 if nargin < 4 | isempty(to)
0037     to = raw.last_samp / raw.info.sfreq;
0038 end
0039 if nargin < 5
0040     sel = 1:raw.info.nchan;
0041 end
0042 if nargin < 6
0043     drop_small_buffer = false;
0044 end
0045 if nargin < 7
0046     buffer_size_sec = 25;
0047 end
0048 
0049 buffer_size = ceil(buffer_size_sec * raw.info.sfreq);
0050 
0051 %
0052 %
0053 %   Convert to samples
0054 %
0055 from = floor(from * raw.info.sfreq);
0056 to   = ceil(to * raw.info.sfreq);
0057 
0058 fiff_write_raw_segment(fname, raw, from, to, sel, drop_small_buffer, buffer_size);