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Complexity of spconvert in matlab

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Kris zenitis
Kris zenitis 2014-7-10
关闭: MATLAB Answer Bot 2021-8-20
Which is the complexity of spconvert function in matlab? I am trying to create the sparse representation of a sparse matrix. My matrix is the adjacency matrix of a graph. I ve got two adj_matrices. Ones with 7.000 nodes and ones with 400.000 nodes. I am using the following code:
f_adj = textread('mat.txt'); % a nx3 matrix represent the adjacency matrix nxn
adj = spconvert(f_adj);
[a b] = eigs(adj);
spy(adj);
The text file mat.txt is a nX3 files which contain the edges of the graph. What I want to ask is the complexity of the sponvert. In my 4gb ram pc I am able to create the first graph but I couldnt create the second graph.

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