Based on a suggestion, the physical dimension will be encoded as binary
code. The textual description can be avoided, and a more compressed
encoding can be used.
A suggestions for including this idea in GDF 2.0 is described in the
latest version of the GDF2.0pre available at
http://bci.tugraz.at/~schloegl/biosig/GDF2.0/
The feasibility of this encoding has also been tested, through the
implementation in BioSig4OctMat (v 1.65) and BioSig4C++ (v 0.21).
The encoding scheme of the File Exchange format (FEF) for vital signs will
be used. The encoding consists of 16 bits; the 5 LSB encode the decimal
factors, the remaining bits encode the units.
The code tables are available in BioSig4OctMat Version 1.65 or higher
within the files
biosig/doc/units.cvs and
biosig/doc/DecimalFactors.txt
The tables are also accessible through the CVS-Web interface.
http://cvs.sourceforge.net/viewcvs.py/biosig/biosig/doc/DecimalFactors.txt?view=markup
http://cvs.sourceforge.net/viewcvs.py/biosig/biosig/doc/units.csv?view=markup
Alois
