Tidy up examples, remove images from docs & readme

README.md

@@ -2,8 +2,6 @@
 
 Python port of Anders and Briegel' s [method](https://arxiv.org/abs/quant-ph/0504117) for fast simulation of Clifford circuits. You can read the full documentation [here](https://peteshadbolt.co.uk/abp/).
 
-![demo](examples/demo.gif)
-
 ## Installation
 
 It's easiest to install with `pip`:
@@ -48,9 +46,7 @@ Now, in another terminal, use `abp.fancy.GraphState` to run a Clifford circuit:
 >>> g.update()
 ```
 
-And you should see a visualization of the state:
-
-![demo](examples/viz.png)
+And you should see a visualization of the state.
 
 ## Testing
 

doc/index.rst

@@ -19,8 +19,6 @@ This is the documentation for ``abp``. It's a work in progress.
 ``abp`` is a Python port of Anders and Briegel' s `method <https://arxiv.org/abs/quant-ph/0504117>`_ for fast simulation of Clifford circuits. 
 That means that you can make quantum states of thousands of qubits, perform any sequence of Clifford operations, and measure in any of :math:`\{\sigma_x, \sigma_y, \sigma_z\}`.
 
-.. image:: ../examples/demo.gif
-
 Installing
 ----------------------------
 
@@ -119,8 +117,6 @@ Now, in another terminal, use ``abp.fancy.GraphState`` to run a Clifford circuit
 
 And you should see a 3D visualization of the state. You can call ``update()`` in a loop to see an animation.
 
-.. image:: ../examples/viz.png
-
 Reference
 ----------------------------
 

examples/mercedes_demo.py

@@ -1,24 +0,0 @@
-from abp.fancy import GraphState as FGS
-import abp
-from abp.util import xyz
-
-def linear_cluster(n):
-    g = FGS(range(n), deterministic=False)
-    g.act_circuit([(i, "hadamard") for i in range(n)])
-    g.act_circuit([((i, i+1), "cz") for i in range(n-1)])
-    return g 
-
-
-def test_mercedes_example_1():
-    """ Run an example provided by mercedes """
-
-    g = linear_cluster(5)
-    g.measure(2, "px", 1)
-    g.measure(3, "px", 1)
-    g.remove_vop(0, 1)
-    g.remove_vop(1, 0)
-    print g.node
-    
-
-if __name__ == '__main__':
-    test_mercedes_example_1()

examples/tidying_vops.py

@@ -1,8 +0,0 @@
-import abp
-
-# TODO
-
-# make a random state
-
-# try to tidy up such that all VOPs are in (X, Y, Z)
-

examples/visualization/issues/unpositioned_nodes.py

@@ -0,0 +1,18 @@
+from abp.fancy import GraphState
+import networkx as nx
+
+edges = [(0,1),(1,2),(2,3),(3,4)]
+nodes = [(i, {'x': i, 'y': 0, 'z':0}) for i in range(5)]
+gs = GraphState()
+
+for node, position in nodes:
+    gs.add_qubit(node, position=position)
+    gs.act_hadamard(node)
+
+for edge in edges:
+    gs.act_cz(*edge)
+gs.update(3)
+# a single line of qubits are created along the x axis
+gs.add_qubit('start')
+gs.update(0)
+# a curved 5-qubit cluster and single qubit is depicted