04-31.txt

来自「MATLABR2006a基础教程」· 文本 代码 · 共 15 行

% An example of sparse matrix operation
i=ceil(rand(10,1)*10);
j=ceil(rand(10,1)*10);
s=ceil(rand(10,1)*10);
S=sparse(i,j,s,10,10)
X=full(S);
num=nnz(S)
non0=nonzeros(S)
Amount_of_storage=nzmax(S)
is_S=issparse(S)
is_X=issparse(X)
S1=spones(S)
spy(S)

>> sp_oper