function the_norm = nma_find_norm(grid)
%find the grid norm

%----------------------------------------------------------------
% This function is called from number of places to find the norm
% INPUT:
%   grid: 2D matrix
% OUTPUT:
%   grid norm. norm 2 is used
%
% by Nasser M. Abbasi
% Math 228a, UC Davis, Fall 2010
%


nma_validate_dimensions_1(grid);
[n,~]=size(grid);

h = 1/(n-1);
the_norm = sqrt(h)*norm(reshape(grid,1,n^2),2);
%the_norm = sqrt(h)*norm(reshape(grid(2:end-1,2:end-1),1,(n-2)^2),2);
%the_norm = h*norm(grid);
end