Here is code that reproduces the issue for me.
I ran this from ipython in a virtual env.
output:
In [2]: run graphbug.py
27000 27000 {'test_str': <PropertyMap object with key type 'Edge' and value
type 'string', for Graph 0x7f76db44b5d0, at 0x7f76db44b290>, 'test_int':
<PropertyMap object with key type 'Edge' and value type 'int32_t', for
Graph 0x7f76db44b5d0, at 0x7f76db44b550>}
27000 1 {}
On Thu, Jul 17, 2014 at 6:31 PM, ... <[email protected]> wrote:
> In the following, I noticed the data type of the property map changes.
> Any ideas what is going on?
>
> >>> graph_tool.all.__version__
> '2.2.31 (commit 245d1e2c, Thu Mar 27 11:28:39 2014 +0100)
>
> # having already built my graph
> >>> graph.ep
>
> {'weight': <PropertyMap object with key type 'Edge' and value type
> 'int32_t', for Graph 0x7f93019b8b90, at 0x7f930058c850>}
>
> >>> graph.ep['weight'].a
> PropertyArray([28, 18, 32, ..., 7, 8, 8], dtype=int32)
>
> >>> graph.save(graph_file_name)
>
> >>> graph2 = Graph()
>
> >>> graph2.load(graph_file_name)
>
> >>> graph2.ep
> {'weight': <PropertyMap object with key type 'Edge' and value type
> 'double', for Graph 0x7f93001b7b10, at 0x7f92fc00b190>}
>
> >>> graph2.ep['weight'].a
> PropertyArray([ 28., 3., 18., ..., 11., 6., 55.])
>
> Then it gets weirder...
>
> >>> graph.ep['ONE_WAY'] = graph.new_edge_property('string')
>
> >>> for edge in graph.edges():
> ... graph.ep['ONE_WAY'][edge] = 'TEST!'
>
> >>> graph.ep
>
> {'ONE_WAY': <PropertyMap object with key type 'Edge' and value type
> 'string', for Graph 0x7f93019b8b90, at 0x7f9327c0dc10>,
> 'weight': <PropertyMap object with key type 'Edge' and value type
> 'int32_t', for Graph 0x7f93019b8b90, at 0x7f930058c850>}
>
> >>> graph.ep['ONE_WAY'][edge]
> 'TEST!'
>
> >>> graph.save(graph_file_name)
>
> >>> graph2 = Graph()
>
> >>> graph2.load(graph_file_name)
>
> >>> graph2.ep
> {}
>
> >>> graph.num_edges(),graph.num_vertices()
> (78147, 29870)
>
> >>> graph2.num_edges(),graph2.num_vertices()
> (1, 29870)
>
>
from graph_tool import Graph, Vertex
graph_file_name = 'debugger.gml'
graph = Graph()
for i in range(27000):
trash = graph.add_vertex()
last_vert = graph.vertex(graph.num_vertices()-1)
for v in graph.vertices():
graph.add_edge(v, last_vert)
last_vert = v
graph.ep['test_int'] = graph.new_edge_property('int32_t')
graph.ep['test_str'] = graph.new_edge_property('string')
edges = graph.edges()
for e in edges:
graph.ep['test_int'][e] = int(1)
graph.ep['test_str'][e] = 'ttt'
print graph.num_vertices(), graph.num_edges(), graph.ep
graph.save(graph_file_name)
graph2 = Graph()
graph2.load(graph_file_name)
print graph2.num_vertices(), graph2.num_edges(), graph2.ep
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