Thanks for all these answers! The find_vertex is nice. Is there a way to use this sample of nodes directly with in_hist or should I do a loop?
On 7 July 2014 16:03, Gareth Simons <[email protected]> wrote: > Something like this may work for you: > > # Setup your boolean property map, which should give you an empty array of > zeros > v_mask = g.new_vertex_property('bool') > > # Assign values to the mask property map array from another property map > array > # In this case where a certain property map is <= to a value > # Note use of the .a to directly access the arrays -> shortcut for > get_array() method > v_mask.a = v_propMap.a <= val > > # Then activate your filter > g.set_vertex_filter(v_mask) > > # Remember to de-activate prior to running other operations on the whole > graph > g.set_vertex_filter(None) > > # Remember to clear or recreate your mask prior to new assignments > # This is what I use -> requires 'import numpy' > v_mask.a = numpy.zeros_like(v_mask.a) > > There may be other methods that work better, but this has so far worked > nicely for me. > Gareth > > > On 7 Jul 2014, at 08:45, Giuseppe Profiti <[email protected]> > wrote: > > With filters, you can either directly select a boolean property or apply a > function. For example, if you have a property representing the temperature > of nodes, you can select all nodes above a specific value and so on. > > Giuseppe > > > 2014-07-07 9:32 GMT+02:00 Flavien Lambert <[email protected]>: > >> Thanks a lot! To be sure to understand, in the XML file, a property must >> be defined as a boolean on the nodes and set as either 0 or 1, right? >> >> >> On 7 July 2014 15:18, Giuseppe Profiti <[email protected]> >> wrote: >> >>> Hi Flavien, >>> you may use filters as explained here >>> http://graph-tool.skewed.de/static/doc/quickstart.html#graph-filtering >>> >>> Best, >>> Giuseppe >>> >>> >>> 2014-07-07 8:06 GMT+02:00 Flavien Lambert <[email protected]>: >>> >>>> Hi all, >>>> I was wondering if there is a clever way to extract the list of >>>> vertices with a given value of a property or if you have to run a loop on >>>> the vertices on build the list by hand (I searched on the documentation but >>>> did not find it...). >>>> Thanks, >>>> F. >>>> >>>> _______________________________________________ >>>> graph-tool mailing list >>>> [email protected] >>>> http://lists.skewed.de/mailman/listinfo/graph-tool >>>> >>>> >>> >>> _______________________________________________ >>> graph-tool mailing list >>> [email protected] >>> http://lists.skewed.de/mailman/listinfo/graph-tool >>> >>> >> >> _______________________________________________ >> graph-tool mailing list >> [email protected] >> http://lists.skewed.de/mailman/listinfo/graph-tool >> >> > _______________________________________________ > graph-tool mailing list > [email protected] > http://lists.skewed.de/mailman/listinfo/graph-tool > > > > _______________________________________________ > graph-tool mailing list > [email protected] > http://lists.skewed.de/mailman/listinfo/graph-tool > >
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