Module: GRATR::Labels

Included in:
Graph
Defined in:
lib/gratr/labels.rb

Instance Method Summary collapse

Instance Method Details

#[](u) ⇒ Object

Return a label for an edge or vertex



31
 
# File 'lib/gratr/labels.rb', line 31

def [](u) (u.kind_of? GRATR::Arc) ? edge_label(u) : vertex_label(u); end

#[]=(u, value) ⇒ Object

Set a label for an edge or vertex



34
 
# File 'lib/gratr/labels.rb', line 34

def []= (u, value) (u.kind_of? GRATR::Arc) ? edge_label_set(u,value) : vertex_label_set(u, value); end

#clear_all_labels ⇒ Object

Delete all graph labels



58
 
# File 'lib/gratr/labels.rb', line 58

def clear_all_labels()  @vertex_labels = {}; @edge_labels = {}; end

#delete_label(u) ⇒ Object

Delete a label entirely



37
 
# File 'lib/gratr/labels.rb', line 37

def delete_label(u) (u.kind_of? GRATR::Arc) ? edge_label_delete(u) : vertex_label_delete(u); end

#edge_label(u, v = nil, n = nil) ⇒ Object

Get the label for an edge



46
47
48
49
 
# File 'lib/gratr/labels.rb', line 46

def edge_label(u,v=nil,n=nil)
  u = edge_convert(u,v,n)
  edge_label_dict[u]
end

#edge_label_delete(u, v = nil, n = nil) ⇒ Object

Delete an edge label



61
62
63
64
 
# File 'lib/gratr/labels.rb', line 61

def edge_label_delete(u, v=nil, n=nil)
  u = edge_convert(u,v,n)
  edge_label_dict.delete(u)
end

#edge_label_set(u, v = nil, l = nil, n = nil) ⇒ Object

Set the label for an edge



52
53
54
55
 
# File 'lib/gratr/labels.rb', line 52

def edge_label_set(u, v=nil, l=nil, n=nil) 
  u.kind_of?(GRATR::Arc) ? l = v : u = edge_convert(u,v,n)
  edge_label_dict[u] = l; self
end

#vertex_label(v) ⇒ Object

Get the label for an edge



40
 
# File 'lib/gratr/labels.rb', line 40

def vertex_label(v)        vertex_label_dict[v]; end

#vertex_label_delete(v) ⇒ Object

Delete a vertex label



67
 
# File 'lib/gratr/labels.rb', line 67

def vertex_label_delete(v) vertex_label_dict.delete(v); end

#vertex_label_set(v, l) ⇒ Object

Set the label for an edge



43
 
# File 'lib/gratr/labels.rb', line 43

def vertex_label_set(v, l) vertex_label_dict[v] = l; self; end