%'stra2num': transform letters (a, b, c) or numerical strings ('1','2'..) to the corresponding numbers %-------------------------------------------- % function numres=stra2num(str) % % OUTPUT: % numres: number (double) % % INPUT: % str: string corresponding to a number or a letter 'a' 'b',.., otherwise the output is empty % % see also num2stra, name_generator, name2display %======================================================================= % Copyright 2008-2016, LEGI UMR 5519 / CNRS UGA G-INP, Grenoble, France % http://www.legi.grenoble-inp.fr % Joel.Sommeria - Joel.Sommeria (A) legi.cnrs.fr % % This file is part of the toolbox UVMAT. % % UVMAT 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. % % UVMAT 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 (see LICENSE.txt) for more details. %======================================================================= function numres=stra2num(str) numres=[]; %default if double(str) >= 48 & double(str) <= 57 % = test for number strings numres=str2double(str); elseif double(str) >= 65 & double(str) <= 90 % test on ascii code for capital letters numres=double(str)-64; %change capital letters to corresponding number in the alphabet elseif double(str) >= 97 & double(str) <= 122 % test on ascii code for small letters numres=double(str)-96; %change small letters to corresponding number in the alphabet end