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Update gate_map.py to allow nonstandard coupling graph sizes #7494

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Update gate_map.py to allow nonstandard coupling graph sizes #7494

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13 changes: 13 additions & 0 deletions qiskit/visualization/gate_map.py
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Original file line number Diff line number Diff line change
Expand Up @@ -348,6 +348,16 @@ def plot_gate_map(
num_qubits = config.n_qubits
coupling_map = config.coupling_map
qubit_coordinates = qubit_coordinates_map.get(num_qubits)

# try to adjust num_qubits to match the next highest hardcoded grid size
if qubit_coordinates is None:
if any([num_qubits < key for key in qubit_coordinates_map.keys()]):
num_qubits_roundup = max(qubit_coordinates_map.keys())
for key in qubit_coordinates_map.keys():
if key < num_qubits_roundup and key > num_qubits:
num_qubits_roundup = key
qubit_coordinates = qubit_coordinates_map.get(num_qubits_roundup)

return plot_coupling_map(
num_qubits,
qubit_coordinates,
Expand Down Expand Up @@ -545,6 +555,9 @@ def plot_coupling_map(

# Add circles for qubits
for var, idx in enumerate(grid_data):
# add check if num_qubits had been rounded up
if var >= num_qubits:
break
_idx = [idx[1], -idx[0]]
ax.add_artist(
mpatches.Ellipse(
Expand Down