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function B = stuff (A, newsize)
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% B = stuff (A, newsize)
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% compresses pattern of A into B, of size newsize
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% newsize defaults to 200
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error ('Square matrices only') ;
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i = floor (1 + (i - 1) * ratio) ;
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j = floor (1 + (j - 1) * ratio) ;
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x = ones (1, length (i)) ;
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B = sparse (i,j,x, newsize, newsize) ;