diff chordtools/note2fifthinfo.m @ 1:8973548174c1 tip

adding tools to repo

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/chordtools/note2fifthinfo.m	Mon May 06 14:43:47 2013 +0100
@@ -0,0 +1,94 @@
+%
+%NOTE2FIFTHINFO find line of fifths natural-position and accidentals
+% 
+% [position, accidentals, success,errormessage] = note2fifthinfo(note,{verbose})
+% 
+% Converts a note string to a natural position on the line of fifths and its 
+% corresponding number of sharps or flats. 
+%
+% *** NOTE! *** 
+% Reference for natural positions on line of fifths for this function is F = 0.
+% 
+% Success = 1 if note converted correctly, 0 otherwise.
+% 
+% If optional argument 'verbose' is 1, function prints any errormessage to 
+% the screen.
+% 
+% calls: parsenote
+%
+% returns:  position (integer)
+%           accidentals (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 [position,accidentals, success, errormessage] = note2fifthinfo(note, verbose)
+
+% set verbose default to 0
+if nargin < 3
+   verbose = 0;
+end
+
+errormessage = '';
+success = 1;
+position = '';
+accidentals = '';
+
+
+[natural, accidentals, success, errormessage] = parsenote(note);
+
+if success
+    switch(natural)
+        case 'F' 
+            position = 0;
+
+        case 'C' 
+            position = 1;
+
+        case 'G' 
+            position = 2;
+
+        case 'D' 
+            position = 3;
+
+        case 'A' 
+            position = 4;
+
+        case 'E' 
+            position = 5;
+
+        case 'B' 
+            position = 6;
+
+        otherwise
+            errormessage = 'Error in note2fifthinfo: unrecognised natural';
+            success=0;
+    end
+end
+        
+            
+if (success == 0) && (verbose == 1)   
+    fprintf(1,errormessage);
+end  
+