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912 /// This utility writes an \ref lgf-format "LGF" file. |
912 /// This utility writes an \ref lgf-format "LGF" file. |
913 /// |
913 /// |
914 /// It can be used almost the same way as \c DigraphWriter. |
914 /// It can be used almost the same way as \c DigraphWriter. |
915 /// The only difference is that this class can handle edges and |
915 /// The only difference is that this class can handle edges and |
916 /// edge maps as well as arcs and arc maps. |
916 /// edge maps as well as arcs and arc maps. |
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917 /// |
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918 /// The arc maps are written into the file as two columns, the |
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919 /// caption of the columns are the name of the map prefixed with \c |
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920 /// '+' and \c '-'. The arcs are written into the \c \@attributes |
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921 /// section as a \c '+' or a \c '-' prefix (depends on the direction |
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922 /// of the arc) and the label of corresponding edge. |
917 template <typename _Graph> |
923 template <typename _Graph> |
918 class GraphWriter { |
924 class GraphWriter { |
919 public: |
925 public: |
920 |
926 |
921 typedef _Graph Graph; |
927 typedef _Graph Graph; |