// Calculate and return the pageranks for the given edges
func PageRank(edges *[]Edge, damping float64, multiplier float64) *map[string]float64 {
g := NewGraph()
ranks := make(map[string]float64)
defer g.Cleanup()
g.PopulateFromEdges(edges)
result := NewVector()
result.Initialize(0)
defer result.Cleanup()
realOne := C.igraph_real_t(1)
C.igraph_pagerank(g.graph, C.IGRAPH_PAGERANK_ALGO_PRPACK, result.vec, &realOne,
C.igraph_vss_all(), C.IGRAPH_DIRECTED, C.igraph_real_t(damping), g.weights.vec, nil)
for i := 0; i < len(g.vertices); i++ {
ranks[g.vertices[i].Id] = float64(C.igraph_vector_e(result.vec, C.long(i))) * multiplier
}
return &ranks
}
// Set the Vector's value at index i to value (float)
// (unclear what happens if index is out of range)
func (v *Vector) SetFloat(value float64, index int) {
C.igraph_vector_set(v.vec, C.long(index), C.igraph_real_t(value))
}
// Set the Vector's value at index i to value (int)
// (unclear what happens if index is out of range)
func (v *Vector) SetInt(value int, index int) {
C.igraph_vector_set(v.vec, C.long(index), C.igraph_real_t(value))
}