Graphs File Format

A graph can be loaded from a text file with the format below. Whatever white character (space, tabulator, new line) can be used as a delimiter of the values.

is_directed

number_of_vertices   number_of_edges

number_of_properties_for_vertices   names_of_properties_for_vertices
number_of_properties_for_edges      names_of_properties_for_edges

vertex_id   values_of_properties
vertex_id   values_of_properties
vertex_id   values_of_properties
...

vertex_id   vertex_id   values_of_properties
vertex_id   vertex_id   values_of_properties
vertex_id   vertex_id   values_of_properties
...

Examples

An one line house graph.

1

5 8

3	__x __y __z
1	__w

0	-1  1 0
1	 1  1 0
2	 1 -1 0
3	-1 -1 0
4	 0  2 0

3 0	1.0
0 1	1.3
1 3	1.6
3 2	1.9
2 0	2.2
0 4	2.5
4 1	2.8
1 2	3.1

  4
 /\
0--1
|\/|
|/\|
3--2