Matlab script to convert GraphML files to adjacency matrices

graphML2Matrix.m

function A = graphML2Matrix(path)
    % Reads a graphml file and represents graph as adjanency matrix
    xml = xmlread(path);
    graph = xml.getElementsByTagName('graph');
    idMap = containers.Map('KeyType','char','ValueType','uint64');
    if (graph.getLength == 1)
        V = graph.item(0).getElementsByTagName('node');
        n = V.getLength;
        A = zeros(n,n);
        for i = 1:n
            idMap(char(V.item(i-1).getAttribute('id'))) = i;
        end
        E = graph.item(0).getElementsByTagName('edge');
        for i = 1:E.getLength
            src = idMap(char(E.item(i-1).getAttribute('source')));
            tgt = idMap(char(E.item(i-1).getAttribute('target')));
            A(src,tgt) = 1;
        end
    end
end