Hi! Gareth, I just realized that you gave me the answer, sorry for the slow understanding! Best, F.
On 7 July 2014 16:27, Flavien Lambert <[email protected]> wrote: > 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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