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  1. or download this
    use GD::Graph::lines;
    use GD::Graph::Map;
    ...
         [        (4, 3, 5, 6, 3,  1.5, -1, -3, -4, -6, -7, -8)],
         [        (2, 2, 2, 5, 5,  4.5,1.5,  2,  3,  5,  4,  3)],
    );
    
  2. or download this
    open IN, "<header_data.dat";
    @myheader = <IN>;
    ...
    open IN, "<daily_data3.dat";
    @mydata3 = <IN>;
    close IN;
    
  3. or download this
    $my_graph = new GD::Graph::lines();
    
    ...
    $HTML = $map->imagemap("sample52.png", \@data);
    
    __END__