예제 #1
0
파일: graphio.cpp 프로젝트: BalkiLab/graffy
bool CDLib::read_edgelist(graph& g, const string& filepath) {
    g.clear();
    ifstream ifs;
    ifs.open(filepath.c_str());
    if (ifs.is_open()) {
        vector<string> units;
        double weight;
        while (!ifs.eof()) {
            weight = 1;
            string line;
            getline(ifs, line);
            if ((line.size() > 0) && (line[0] != '#')) {
                split(line, units);
                if (units.size() != 0) {
                    if ((units.size() < 2) || (units.size() > 3)) return false;
                    if (units.size() == 3) weight = str2T<double>(units[2]);
                    g.add_node(units[0]);
                    g.add_node(units[1]);
                    g.add_edge(units[0], units[1], weight);
                }
            }
        }
        g.set_graph_name(filename(filepath));
        return true;
    }
    return false;
}
예제 #2
0
void CDLib::init_empty_graph(graph& g, size_t size) {
    g.clear();
    if (g.is_directed()) g.convert_to_undirected();
    if (g.is_weighted()) g.convert_to_unweighted(0);
    for (id_type i = 0; i < size; i++) g.add_node();

}
예제 #3
0
파일: graphio.cpp 프로젝트: BalkiLab/graffy
bool CDLib::read_adjacencylist(graph& g, const string& filepath) {
    g.clear();
    ifstream ifs;
    ifs.open(filepath.c_str());
    if (ifs.is_open()) {
        int type = 0;
        id_type nid = 0, estart = 0;
        string line;
        getline(ifs, line);
        vector<id_type> units;
        split(line, units);
        if ((units.size() > 2) && (units[0] == 0) && (units[1] == units.size() - 2)) {
            type = 0;
            estart = 2;
        } else if ((units.size() > 1) && (units[0] == 0)) {
            type = 1;
            estart = 1;
        } else {
            type = 2;
            estart = 0;
        }
        g.add_node(to_string(nid));
        for (id_type i = estart; i < units.size(); i++) {
            g.add_node(to_string(units[i]));
            g.add_edge(to_string(nid), to_string(units[i]), 1);
        }
        while (!ifs.eof()) {
            string line;
            getline(ifs, line);
            vector<id_type> units;
            split(line, units);
            if (units.size() > 0) {
                if ((type == 0) || (type == 1)) nid = units[0];
                else nid++;
                g.add_node(to_string(nid));
                for (id_type i = estart; i < units.size(); i++) {
                    g.add_node(to_string(units[i]));
                    g.add_edge(to_string(nid), to_string(units[i]), 1);
                }
            }
        }
        g.set_graph_name(filename(filepath));
        return true;
    }
    return false;
}
예제 #4
0
파일: graphio.cpp 프로젝트: BalkiLab/graffy
bool CDLib::read_matlab_sp(graph& g, const string& filepath) {
    g.clear();
    ifstream ifs;
    ifs.open(filepath.c_str());
    if (ifs.is_open()) {
        id_type from, to;
        double weight = 1;
        while (!ifs.eof()) {
            ifs >> from >> to >> weight;
            while (max(from, to) > g.get_num_nodes()) {
                g.add_node();
            }
            g.add_edge(from - 1, to - 1, weight);
        }
        g.set_graph_name(filename(filepath));
        return true;
    }