view chordtools/note2fifthposition.m @ 1:8973548174c1 tip

adding tools to repo

%
%NOTE2FIFTHPOSITION find note position on the line of fifths w.r.t. C=0
% 
% [noteposition, success, errormessage] = note2fifthposition(note,{verbose})
% 
% Converts a note string to a natural position on the line of fifths and its 
% corresponding number of sharps or flats. Reference on line of fifths is C = 0.
% 
% Success = 1 if note converted correctly, 0 otherwise.
% 
% If optional argument 'verbose' is 1, function prints any errormessage to 
% the screen.
% 
% calls: 	note2fifthinfo
%
% returns:  noteposistion (integer)
%           success (boolean)
%           errormessage (string)
% 
%
% Author: Christopher Harte,  March 2009
% 
% Copyright: Centre for Digital Music, Queen Mary University of London 2005 
%
% This file is part of the C4DM Chord Toolkit V2.0  
%
% The C4DM Chord Toolkit is free software; you can redistribute it and/or 
% modify it under the terms of the GNU General Public License as published 
% by the Free Software Foundation; either version 2 of the License, or
% (at your option) any later version.
%
% The C4DM Chord Toolkit is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with the C4DM Toolkit; if not, write to the Free Software
% Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

%		
function [noteposition, success, errormessage] = note2fifthposition(note, verbose)

% set verbose default to 0
if nargin < 3
   verbose = 0;
end

errormessage = '';
success = 1;
noteposition = '';

[notenatural, noteaccidentals, success1,errormessage] = note2fifthinfo(note);

if success
    noteposition = notenatural + 7.*noteaccidentals -1;
end        
            
if (success == 0) && (verbose == 1)   
    fprintf(1,errormessage);
end