Re: [graph-tool] Strange save / load_graph behaviour - test code

3 Oct 2012


      Here is a minimal code that shows this behaviour:


#!/usr/bin/env python
# -*- coding: utf-8 -*-

import sys
from numpy import array

import graph_tool.all as gt

print 'Graph_tool version : %s' % gt.__version__

def test1():
     print ('\n'
            'Performing test1:\n'
            '-----------------')
     graph1 = gt.lattice((2,2), periodic=False)
     pos = graph1.new_vertex_property('float')
     pos.a = array([0.0,0.1,
                    1.0, 1.1])
     graph1.vertex_properties['pos'] = pos

     print ('\n'
            'original pos: %s\n'
            'reload graph property:\n'
            '               %s\n') % (str(pos.a),
str(graph1.vertex_properties['pos'].a))
     graph1.save("graph_tool_io_test1.xml")
     return graph1

def test2():
     print ('\n'
            'Performing test2:\n'
            '-----------------')
     graph2 = gt.load_graph("graph_tool_io_test1.xml")
     pos = array([0.0,0.1,
                  1.0, 1.1])
     print ('\n'
            'original pos: %s\n'
            'reload graph property:\n'
            '               %s\n') % (str(pos),
str(graph2.vertex_properties['pos'].a))
     return graph2

def test3():

     graph3 = gt.lattice((2,2), periodic=False)
     pos = graph3.new_vertex_property('float')
     pos.a = array([0.0,0.1,
                    1.0, 1.1])

     graph3.load("graph_tool_io_test1.xml")
     print ('\n'
            'original graph property: %s\n'
            'reload graph property: %s\n') % (str(pos.a),
str(graph3.vertex_properties['pos'].a))
     return graph3


if __name__ == '__main__':
     switch = sys.argv[1]
     if switch == 'all':
         graph1 = test1()
         graph2 = test2()
         graph3 = test3()
     elif switch == 'test1':
         graph1 = test1()
     elif switch == 'test2':
         graph2 = test2()
     elif switch == 'test3':
         graph3 = test3()
     elif switch == 'import-only':
         print 'Imports only'
     else:
         print 'Usage: python test.py {all|test1|test2|test3}'

##### End


Le 02/10/2012 14:37, Guillaume a écrit :
...
Hi list, hi Tiago,
First thank you for graph tool, that's a great package.
I run in a very strange problem when reloading a xml graph file with an
'internalized' PropertyMap.
the minimum script  does the following:
* test1: create, internalize the PropertyMap pos1, save the graph in xml
* test2: load the graph from xml, read the internalized PropertyMap pos2
Depending whether the two tests are ran in separate processes are in the
same process, the two Propertymaps will not have the same values:
test1 and 2 in the same process:
pos1 == pos2
test1 and test2 in different processes
pos1 != pos2
--
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Re: [graph-tool] Strange save / load_graph behaviour - test code

Guillaume Gay