% method of class @signal
% function time=firsttimebiggerzero(sig)
%
% returns the time, where the signal is for the first time
% bigger then zero
% useful for throwing away empty parts of signals
%
%   INPUT VALUES:
%       sig: original @signal 
% 
%   RETURN VALUE:
%       time: time, when signal is bigger 0 for first time
%
% (c) 2003-2008, University of Cambridge, Medical Research Council 
% Maintained by Tom Walters (tcw24@cam.ac.uk), written by Stefan Bleeck (stefan@bleeck.de)
% http://www.pdn.cam.ac.uk/cnbh/aim2006
% $Date: 2008-06-10 18:00:16 +0100 (Tue, 10 Jun 2008) $
% $Revision: 585 $

function time=firsttimebiggerzero(sig)

vals=getvalues(sig);
big=find(vals>0);
m=min(big);

time=bin2time(sig,m);

