我正在尝试从Graphviz DOT文件中读取图表。我对Vertex的两个属性感兴趣 - 它的id和外围。 A还想加载图形标签。
我的代码如下所示:
struct DotVertex {
std::string name;
int peripheries;
};
struct DotEdge {
std::string label;
};
typedef boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS,
DotVertex, DotEdge> graph_t;
graph_t graphviz;
boost::dynamic_properties dp;
dp.property("node_id", boost::get(&DotVertex::name, graphviz));
dp.property("peripheries", boost::get(&DotVertex::peripheries, graphviz));
dp.property("edge_id", boost::get(&DotEdge::label, graphviz));
bool status = boost::read_graphviz(dot, graphviz, dp);
我的示例DOT文件如下所示:
digraph G {
rankdir=LR
I [label="", style=invis, width=0]
I -> 0
0 [label="0", peripheries=2]
0 -> 0 [label="a"]
0 -> 1 [label="!a"]
1 [label="1"]
1 -> 0 [label="a"]
1 -> 1 [label="!a"]
}
当我运行它时,我得到异常“未找到属性:标签”。我做错了什么?
答案 0 :(得分:7)
您没有为&#34;标签&#34;定义(动态)属性地图。
使用ignore_other_properties
或定义它:)
在下面的示例中,使用ignore_other_properties
可以防止需要rankdir
(图形属性)和width
,style
(顶点属性):
<强> Live On Coliru 强>
#include <boost/graph/graphviz.hpp>
#include <libs/graph/src/read_graphviz_new.cpp>
#include <iostream>
struct DotVertex {
std::string name;
std::string label;
int peripheries;
};
struct DotEdge {
std::string label;
};
typedef boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS,
DotVertex, DotEdge> graph_t;
int main() {
graph_t graphviz;
boost::dynamic_properties dp(boost::ignore_other_properties);
dp.property("node_id", boost::get(&DotVertex::name, graphviz));
dp.property("label", boost::get(&DotVertex::label, graphviz));
dp.property("peripheries", boost::get(&DotVertex::peripheries, graphviz));
dp.property("label", boost::get(&DotEdge::label, graphviz));
bool status = boost::read_graphviz(std::cin, graphviz, dp);
return status? 0 : 255;
}
哪次成功运行
有关使用dynamic_properties
:read_graphviz() in Boost::Graph, pass to constructor