map_property_values

graph_tool.map_property_values(src_prop, tgt_prop, map_func)

Map the values of src_prop to tgt_prop according to the mapping function map_func.

Parameters:

src_propPropertyMap

Source property map.

tgt_propPropertyMap

Target property map.

map_funcfunction or callable object

Function mapping values of src_prop to values of tgt_prop.

Returns:

None

Examples

>>> g = gt.collection.data["lesmis"]
>>> label_len = g.new_vertex_property("int64_t")
>>> gt.map_property_values(g.vp.label, label_len,
...                        lambda x: len(x))
>>> print(label_len.a)
[ 6  8 14 11 12  8 12  8  5  6  7  7 10  6  7  7  9  9  7 11  9  6  7  7
 13 10  7  6 12 10  8  8 11  6  5 12  6 10 11  9 12  7  7  6 14  7  9  9
  8 12  6 16 12 11 14  6  9  6  8 10  9  7 10  7  7  4  9 14  9  5 10 12
  9  6  6  6 12]