Asciigraf is a python library that turns ascii diagrams of networks into
network objects. It returns a networkx
graph of nodes for each alpha-numeric element in the input text; nodes
are connected in the graph to match the edges represented in the diagram
by -, /, \ and |.
Asciigraf can be installed from pypi using pip:
~/$ pip install asciigraf
Asciigraf expects a string containg a 2-d ascii diagram. Nodes can be an
alphanumeric string composed of words, sentences and punctuation (for a look at
what is all tested to work, see the node recognition tests). Edges can be
composed of -, /, \ and |.
import asciigraf
network = asciigraf.graph_from_ascii("""
NodeA-----
|
|---NodeB
""")
print(network)
>>> <networkx.classes.graph.Graph at 0x7f24c3a8b470>
print(network.edges())
>>> [('NodeA', 'NodeB')]
print(network.nodes())
>>> ['NodeA', 'NodeB']Networkx provides tools to attach data to graphs, nodes and edges, and asciigraf
leverages these in a number of ways; in the example below you can see that
asciigraf uses this to attach a x, y position tuple to each node
indicating the line/col position of each node ( 0,0 is at the top-left).
It also attaches a length attribute
to each edge which matches the number of characters in that edge, as well
as a list of positions for each character an edge. In addition, the input data
is attached as a graph attribute ascii_string for reference.
print(network.nodes(data=True))
>>> [('NodeA', {'position': (10, 1)}), ('NodeB', {'position': (23, 3)})]
print(network.edges(data=True))
>>> [('NodeA', 'NodeB', OrderedDict([('length', 10), 'points', [...]))]
print(network.edge['NodeA']['NodeB']['points'])
>>> [(15, 1), (16, 1), (17, 1), (18, 1),
(19, 1), (19, 2), (19, 3), (20, 3), (21, 3), (22, 3)]
print(network.graph["ascii_string"])
>>>
NodeA-----
|
|---NodeBAsciigraf also lets you annotate the edges of graphs using in-line labels ---
denoted by parentheses. The contents of the label will be attached to the edge
on which it is drawn with the attribute name label.
network = asciigraf.graph_from_ascii("""
A---(nuts)----B----(string)---C
|
|
|
D---(pebbles)----E
""")
print(network.get_edge_data("A", "B")["label"])
>>> nuts
print(network.get_edge_data("B", "C")["label"])
>>> string
print(network.get_edge_data("D", "E")["label"])
>>> pebbles
print(hasattr(network.get_edge_data("B", "D"), "label"))
>>> FalseHave fun!
import asciigraf
network = asciigraf.graph_from_ascii("""
s---p----1---nx
/ | |
/ | 0---f
6l-a c--
/ | \--k
/ ua | 9e
q \ | /
\-r7z jud
\ |
m y
\ |
v-ow
""")
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