<HTML> <!-- -- Copyright (c) Jeremy Siek 2000 -- -- Permission to use, copy, modify, distribute and sell this software -- and its documentation for any purpose is hereby granted without fee, -- provided that the above copyright notice appears in all copies and -- that both that copyright notice and this permission notice appear -- in supporting documentation. Jeremy Siek makes no -- representations about the suitability of this software for any -- purpose. It is provided "as is" without express or implied warranty. --> <Head> <Title>Boost Graph Library: Copy Graph</Title> <BODY BGCOLOR="#ffffff" LINK="#0000ee" TEXT="#000000" VLINK="#551a8b" ALINK="#ff0000"> <IMG SRC="../../../c++boost.gif" ALT="C++ Boost" width="277" height="86"> <BR Clear> <H1><TT>copy_graph</TT></H1> <PRE> template <class <a href="./VertexListGraph.html">VertexListGraph</a>, class <a href="./MutableGraph.html">MutableGraph</a>> void copy_graph(const VertexListGraph& G, MutableGraph& G_copy, const bgl_named_params<P, T, R>& params = <i>all defaults</i>) </PRE> This function copies all of the vertices and edges from graph <tt>G</tt> into <tt>G_copy</tt>. Also, it copies the vertex and edge properties, either by using the <tt>vertex_all</tt> and <tt>edge_all</tt> property maps, or by user-supplied copy functions. <H3>Where Defined</H3> <P> <a href="../../../boost/graph/copy.hpp"><TT>boost/graph/copy.hpp</TT></a> <P> <H3>Parameters</H3> IN: <tt>const VertexListGraph& G</tt> <blockquote> A directed or undirected graph. The graph type must be a model of <a href="./VertexListGraph.html">Vertex List Graph</a>. </blockquote> OUT: <tt>MutableGraph& G_copy</tt> <blockquote> The resulting copy of the graph. The graph type must be a model of <a href="./MutableGraph.html">Mutable Graph</a>. </blockquote> <h3>Named Parameters</h3> IN: <tt>vertex_copy(VertexCopier vc)</tt> <blockquote> This is a <a href="http://www.sgi.com/tech/stl/BinaryFunction.html">Binary Function</a> that copies the properties of a vertex in the original graph into the corresponding vertex in the copy.<br> <b>Default:</b> <tt>vertex_copier<VertexListGraph, MutableGraph></tt> which uses the property tag <tt>vertex_all</tt> to access a property map from the graph. </blockquote> IN: <tt>edge_copy(EdgeCopier ec)</tt> <blockquote> This is a <a href="http://www.sgi.com/tech/stl/BinaryFunction.html">Binary Function</a> that copies the properties of an edge in the original graph into the corresponding edge in the copy.<br> <b>Default:</b> <tt>edge_copier<VertexListGraph, MutableGraph></tt> which uses the property tag <tt>edge_all</tt> to access a property map from the graph. </blockquote> IN: <tt>vertex_index_map(VertexIndexMap i_map)</tt> <blockquote> The vertex index map type must be a model of <a href="../../property_map/ReadablePropertyMap.html">Readable Property Map</a> and must map the vertex descriptors of <tt>G</tt> to the integers from 0 to <tt>num_vertices(G)</tt>.<br> <b>Default:</b> <tt>get(vertex_index, G)</tt> </blockquote> UTIL/OUT: <tt>orig_to_copy(Orig2CopyMap c)</tt> <blockquote> This maps vertices in the original graph to vertices in the copy. <b>Default:</b> an <a href="../../property_map/iterator_property_map.html"> </tt>iterator_property_map</tt></a> created from a <tt>std::vector</tt> of the output graph's vertex descriptor type of size <tt>num_vertices(g)</tt> and using the <tt>i_map</tt> for the index map. </blockquote> <H3>Complexity</H3> <P> The time complexity is <i>O(V + E)</i>. <br> <HR> <TABLE> <TR valign=top> <TD nowrap>Copyright © 2000-2001</TD><TD> <A HREF="../../../people/jeremy_siek.htm">Jeremy Siek</A>, Indiana University (<A HREF="mailto:jsiek@osl.iu.edu">jsiek@osl.iu.edu</A>) </TD></TR></TABLE> </BODY> </HTML>