Convert Adjacency list of graph into Adjacency matrix

I am working with Adjacency lists of a graph with 198 vertices and 2472 edges. How can I construct adjacency matrix of graph in Matlab?

Thank you for any help

[Guillaume]

What form do the lists come in?

Answer 1

[Bruno Luong]

use SPARSE or ACCUMARRAY

Answer 2

[Steven Lord]

How is your data stored?

Do you have a matrix or two vectors containing the endpoints of the edges? In this case you can use sparse or accumarray as Bruno suggested.

Do you have a graph or digraph object? Call adjacency on it.

Is your data stored in a different way? If so, describe your storage system and we may be able to offer some guidance.

[POLLY]

My data is given in this file. We use the popular Metis input/output format. I have attached an example for Metis input

Answer 3

[Guillaume]

One possible way to read your file:

lists = strsplit(fileread('list.txt'), {'\r', '\n'});
if isempty(lists{end}), lists = lists(1:end-1); end
lists = cellfun(@(v) sscanf(v, '%d'), lists, 'UniformOutput', false);
adj = sparse(repelem(1:numel(lists), cellfun('length', lists)), vertcat(lists{:}), 1)

If you want a full matrix:

full(adj)