closest(X,b)

function c = closest(X,b)
%CLOSEST Finds the value in an array X closest to the scalar b.
%   Given a vector or matrix X, CLOSEST(X,b) finds the element in X that is
%   nearest to the scalar b.
%
%   Example:
%
%   >> X = [-1 -2 6.14 9];
%   >> b = pi;
%   >> c = closest(X,b)
%   c = 
%      6.14
%
%
%   Matt, June 2013

[~,I] = min(abs(X(:)-b));
c = X(I);

end