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    %% Sparse Matrix of Nonzeros with Specified Size
% Create a 1500-by-1500 sparse matrix from the triplets |i|, |j|, and
% |v|. 

% Copyright 2015 The MathWorks, Inc.

i = [900 1000];
j = [900 1000];
v = [10 100];
S = sparse(i,j,v,1500,1500)

%%
% When you specify a size larger than |max(i)| -by- |max(j)|, the |sparse|
% function pads the output with extra rows and columns of zeros.
size(S)