sopen

PURPOSE

SYNOPSIS

DESCRIPTION

 SOPEN opens signal files for reading and writing and returns 
       the header information. Many different data formats are supported.

 Reading of data: 
     HDR = sopen(Filename, 'r', [, CHAN [, MODE]]);
     [S,HDR] = sread(HDR, NoR, StartPos);
     HDR = sclose(HDR);

 Writing of data: 
    HDR = sopen(HDR, 'w');
       writing requires a predefined HDR struct. see demo3.m 

 2nd argument (PERMISSION) is one of the following strings 
    'r'    read header
    'w'    write header
       'rz'    on-the-fly decompression of gzipped files (only supported with Octave 2.9.3 or higher). 
       'wz'    on-the-fly compression to gzipped files (only supported with Octave 2.9.3 or higher). 

 CHAN defines a list of selected Channels
       Alternative CHAN can be also a Re-Referencing Matrix ReRefMx
           (i.e. a spatial filter). 
       E.g. the following command returns the difference and 
           the mean of the first two channels. 
       HDR = sopen(Filename, 'r', [[1;-1],[.5,5]]);
       [S,HDR] = sread(HDR, Duration, Start);
       HDR = sclose(HDR);

 MODE  'UCAL'  uncalibrated data
       'OVERFLOWDETECTION:OFF' turns off automated overflow detection
       'OUTPUT:SINGLE' returned data is of class 'single' [default: 'double']
       '32bit' for NeuroScan CNT files reading 4-byte integer data
       Several opteions can be concatenated within MODE. 

 HDR contains the Headerinformation and internal data
 S     returns the signal data 

 Several files can be loaded at once with SLOAD

 see also: SLOAD, SREAD, SSEEK, STELL, SCLOSE, SWRITE, SEOF

CROSS-REFERENCE INFORMATION

• bdf2biosig_events BDF2BIOSIG_EVENTS converts BDF Status channel into BioSig Event codes.
• bkropen BKROPEN opens BKR file
• bni2hdr BNI2HDR converts BNI header information into BioSig Header information
• bv2biosig_events BV2BIOSIG_EVENTS converts VMRK marker information BioSig Event codes.
• cntopen CNTOPEN opens neuroscan files (but does not read the data).
• famosopen FAMOSOPEN opens FAMOS file
• fefopen FEFOPEN opens and reads FEF file
• fltopen FLTOPEN opens FLT file
• gdfdatatype GDFDATATYPE converts number into data type according to the definition of the GDF format [1].
• getfiletype GETFILETYPE get file type
• iopen IOPEN opens image files for reading and writing and returns
• leadidcodexyz LeadIdCodeXYZ uses the Label information for computing the
• matread MATRREAD Loads (parts of) data stored in Matlab-format
• mwfopen MWFOPEN reads MFER files
• opendicom OPENDICOM is an auxillary function to SOPEN for
• openiff OPENIFF is an auxillary function to SOPEN for
• openldr OPENLDR loads neuroscan LDR files
• openxml OPENXML reads XML files and tries to extract biosignal data
• physicalunits PHYSICALUNITS converts PhysDim inte PhysDimCode and vice versa
• sclose SCLOSE closes the file with the handle HDR
• scpopen SCPOPEN reads and writes SCP-ECG files
• sopen SOPEN opens signal files for reading and writing and returns
• sread SREAD loads selected segments of signal file
• str2double % STR2DOUBLE converts strings into numeric values

• eload ELOAD loads EVENT data
• fepi2gdf function [s,H]=fepi2gdf(fn);
• hdr2ascii HDR2ASCII converts the header information into ASCII text.
• save2bkr SAVE2BKR loads EEG data and saves it in BKR format
• save2edf SAVE2GDF loads EEG data and saves it in GDF format
• save2gdf SAVE2GDF loads EEG data and saves it in GDF format
• sload SLOAD loads signal data of various data formats
• sopen SOPEN opens signal files for reading and writing and returns
• ssave SSAVE saves signal data in various data formats
• trigandsave2gdf TrigAndSave2GDF loads and triggers signal data and saves it to a GDF-file