On 10/9/12, Olemis Lang <ole...@gmail.com> wrote:
> On 10/9/12, Carlos Zuniga <carlos....@gmail.com> wrote:
>> 2012/10/9 Olemis Lang <ole...@gmail.com>:
>>> Hola a tod@s !
>>>
>>> Recientemente necesito convertir unos diagramas en formato .dot para
>>> obtener la misma representación en formato .xdoc . Busqué una librería
>>> q permitiera hacer esto sin ejecutar los comandos de Graphviz en un
>>> proceso o hilo aparte . Finalmente encontré yapgvb [1]_ ... pero el
>>> siguiente ejemplo no me funciona .
>>>
>>> {{{
>>> #!py
>>>
>>> >>> from yapgvb import Graph
>>> >>> from cStringIO import StringIO
>>> >>> gdot = StringIO("digraph G {Hello->World}")
>>> >>> g = Graph.read(gdot)
>>> Traceback (most recent call last):
>>> File "<stdin>", line 1, in <module>
>>> File "/usr/lib/python2.6/dist-packages/yapgvb/__init__.py", line 253,
>>> in read
>>> newgraph = cls(input_stream_or_filename)
>>> File "/usr/lib/python2.6/dist-packages/yapgvb/__init__.py", line
>>> 551, in __init__
>>> GraphBase.__init__(self, arg)
>>> File "/usr/lib/python2.6/dist-packages/yapgvb/__init__.py", line
>>> 283, in __init__
>>> CGraph.__init__(self,*args,**keywords)
>>> File "/usr/lib/python2.6/dist-packages/yapgvb/__init__.py", line
>>> 187, in cgraph_init_wrapper
>>> CGraph.__original_init__(self, *a,**b)
>>> Boost.Python.ArgumentError: Python argument types in
>>> CGraph.__init__(Graph, cStringIO.StringI)
>>> did not match C++ signature:
>>> __init__(_object*, _IO_FILE*)
>>> __init__(_object*, boost::python::str, agraph_type)
>>> __init__(_object*, boost::python::str)
>>> __init__(_object*)
>>>
>>> }}}
>>>
>>> Preguntas
>>>
>>> - ¿Conocen alguna forma de hacer funcionar este ejemplo y
>>> pasar el código .dot a graphviz utilizando un objeto StringIO o
>>> equivalente (i.e. sin utilizar el sistema de archivos ;) ?
>>
>> Parece que su constructor también acepta cadenas de python, has
>> intentado simplemente:
>>
>>>>> gdot = "digraph G {Hello->World}"
>>>>> g = Graph.read(gdot)
>>
>
> rats !
>
[...]
A ver , rectifico todo lo q dije antes (y no repetí ...) pq está
terriblemente mal . Probé esto con cierta prisa y está mal todo lo q
dije ... a ver ... comentarios in-line en el código ...
{{{
#!py
# Imports
>>> from yapgvb import Graph
>>> from sys import stdout
>>> import cStringIO
>>> import StringIO
# .dot graph
>>> gdot = "digraph G {Hello->World}"
# Passing .dot grap in to __init__
>>> g = Graph(gdot)
>>> g.layout('dot')
0
# Same problem with cStringIO
>>> gout = cStringIO.StringIO()
>>> g.render(gout, 'xdot')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.6/dist-packages/yapgvb/__init__.py", line
341, in render
result = rendering_context.render(self, format, outstream)
Boost.Python.ArgumentError: Python argument types in
RenderingContext.render(RenderingContext, Graph, str, cStringIO.StringO)
did not match C++ signature:
render(GVCWrapper {lvalue}, Graph*, boost::python::str, boost::python::str)
render(GVCWrapper {lvalue}, Graph*, boost::python::str, _IO_FILE*)
# Same problem with StringIO
>>> gout = StringIO.StringIO()
>>> g.render(gout, 'xdot')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.6/dist-packages/yapgvb/__init__.py", line
341, in render
result = rendering_context.render(self, format, outstream)
Boost.Python.ArgumentError: Python argument types in
RenderingContext.render(RenderingContext, Graph, str, instance)
did not match C++ signature:
render(GVCWrapper {lvalue}, Graph*, boost::python::str, boost::python::str)
render(GVCWrapper {lvalue}, Graph*, boost::python::str, _IO_FILE*)
# Works with stdout but ... outputs empty graph :'(
>>> g.render(stdout, 'xdot')
graph "digraph G {Hello->World}" {
graph [bb="0,0,0,0",
_draw_="c 5 -white C 5 -white P 4 0 0 0 0 0 0 0 0 ",
xdotversion="1.2"];
}
0
>>> g = Graph()
# Reading from string ... rats !
>>> g.read(gdot)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.6/dist-packages/yapgvb/__init__.py", line 249, in read
input_stream_or_filename = open(input_stream_or_filename,'r')
IOError: [Errno 2] No such file or directory: 'digraph G {Hello->World}'
# Same problem reading from cStringIO
>>> gin = cStringIO.StringIO(gdot)
>>> g.read(gin)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.6/dist-packages/yapgvb/__init__.py", line 253, in read
newgraph = cls(input_stream_or_filename)
File "/usr/lib/python2.6/dist-packages/yapgvb/__init__.py", line
551, in __init__
GraphBase.__init__(self, arg)
File "/usr/lib/python2.6/dist-packages/yapgvb/__init__.py", line
283, in __init__
CGraph.__init__(self,*args,**keywords)
File "/usr/lib/python2.6/dist-packages/yapgvb/__init__.py", line
187, in cgraph_init_wrapper
CGraph.__original_init__(self, *a,**b)
Boost.Python.ArgumentError: Python argument types in
CGraph.__init__(Graph, cStringIO.StringI)
did not match C++ signature:
__init__(_object*, _IO_FILE*)
__init__(_object*, boost::python::str, agraph_type)
__init__(_object*, boost::python::str)
__init__(_object*)
# Same problem from StringIO
>>> gin = StringIO.StringIO(gdot)
>>> g.read(gin)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.6/dist-packages/yapgvb/__init__.py", line 253, in read
newgraph = cls(input_stream_or_filename)
File "/usr/lib/python2.6/dist-packages/yapgvb/__init__.py", line
551, in __init__
GraphBase.__init__(self, arg)
File "/usr/lib/python2.6/dist-packages/yapgvb/__init__.py", line
283, in __init__
CGraph.__init__(self,*args,**keywords)
File "/usr/lib/python2.6/dist-packages/yapgvb/__init__.py", line
187, in cgraph_init_wrapper
CGraph.__original_init__(self, *a,**b)
Boost.Python.ArgumentError: Python argument types in
CGraph.__init__(Graph, instance)
did not match C++ signature:
__init__(_object*, _IO_FILE*)
__init__(_object*, boost::python::str, agraph_type)
__init__(_object*, boost::python::str)
__init__(_object*)
}}}
o sea ... q realmente no he avanzado nada . De todas formas gracias
por su respuesta .
--
Regards,
Olemis.
Blog ES: http://simelo-es.blogspot.com/
Blog EN: http://simelo-en.blogspot.com/
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