105 lines
4.3 KiB
HTML
105 lines
4.3 KiB
HTML
<HTML>
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<!--
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// Copyright (c) 2006, Stephan Diederich
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//
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// This code may be used under either of the following two licences:
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// Software is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// OTHER DEALINGS IN THE SOFTWARE. OF SUCH DAMAGE.
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//
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// Or:
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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-->
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<Head>
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<Title>Boost Graph Library: write_dimacs_max_flow</Title>
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<BODY BGCOLOR="#ffffff" LINK="#0000ee" TEXT="#000000" VLINK="#551a8b"
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ALINK="#ff0000">
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<IMG SRC="../../../boost.png"
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ALT="C++ Boost" width="277" height="86">
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<BR Clear>
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<H1><A NAME="sec:write_dimacs_max_flow">
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<TT>write_dimacs_max_flow</TT>
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</H1>
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<pre>
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//outputs a graph with including edge_capacity properties to an std::ostream
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template < typename Graph, typename CapacityMap, typename IndexMap >
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void write_dimacs_max_flow(Graph& g,
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CapacityMap capacity,
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IndexMap idx,
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typename graph_traits<Graph>::vertex_descriptor& src,
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typename graph_traits<Graph>::vertex_descriptor& sink,
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std::ostream& out)
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</pre>
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<p>
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This method writes a BGL graph object as an max-flow problem into an output stream in extended dimacs format (see <a href="https://web.archive.org/web/20120102213028/http://www.avglab.com/andrew/CATS/maxflow_formats.htm"><TT>Goldbergs site</TT></a> for more information).
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The output can be read in again using the <a href="../../../boost/graph/read_dimacs.hpp"><TT>boost/graph/read_dimacs.hpp</TT></a> method.
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<H3>Where Defined</H3>
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<P>
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<a href="../../../boost/graph/write_dimacs.hpp"><TT>boost/graph/write_dimacs.hpp</TT></a>
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<h3>Parameters</h3>
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IN: <tt>Graph& g</tt>
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<blockquote>
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A directed or undirected graph. The graph's type must be a model of
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<a href="./VertexListGraph.html">VertexListGraph</a> and <a href="./EdgeListGraph.html">EdgeListGraph</a>, as num_vertices(Graph) and num_edges(Graph) is used inside. <a href="#1">[1]</a>
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</blockquote>
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IN: <tt>CapacityMap capacity</tt>
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<blockquote>
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A property map that models <a href="../../property_map/doc/ReadablePropertyMap.html">Readable Property Map</a> whose key type is the edge descriptor of the graph and whose value type can be written to a stream. <br>
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</blockquote>
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IN: <tt>IndexMap epw</tt>
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<blockquote>
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A property map that models <a href="../../property_map/doc/ReadablePropertyMap.html">Readable Property Map</a> whose key type is the vertex descriptor of the graph and whose value type can be written to a stream. <br>
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</blockquote>
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OUT: <tt>std::ostream& out</tt>
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<blockquote>
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A standard <tt>std::ostream</tt> object.
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</blockquote>
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<H3>
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Example
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</H3>
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A short <a href="../example/read_write_dimacs-eg.cpp">example</a> which uses read_dimacs and write_dimacs is located in the examples directory.
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<h3>See Also</h3>
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<a href="./read_dimacs.html"><tt>read_dimacs</tt></a>
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<h3>Notes</h3>
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<a name="1">[1]</a> As num_edges() and num_vertices() is used inside which returns values for the unfiltered graph (instead of the filtered), this method cannot be used with a <a href="./filtered_graph.html">filtered_graph</a>See <a href="./filtered_graph.html#2">filtered_graph Note [2]</a> for the reason.
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</BODY>
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</HTML>
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