function y = text2int1 (x)% This function takes the letter in the string x and converts % it to an integer. % The convention for this function is%  ' ' --> 0%   a  --> 1%   b  --> 2%   and so on...[s1,s2]=size(x);yvec=x - 'a'+1;   inds=find(yvec<1);yvec(inds)=zeros(size(inds));  % set all the spaces to a value of 0% Now we must convert to a numbery=zeros(s1,1);for k=1:s1,for j=0:s2-1,   ind=s2-j;   y(k)=y(k)+yvec(k,ind)*100^(j);   end;end;