class_docstr: A class for managing a circuit plot.
docstr: Create the grid of wires.
docstr_tok: ["Create","the","grid","of","wires","."]
code: def _create_grid(self):
      """Create the grid of wires."""
      scale = self.scale
      wire_grid = np.arange(
          0.0, self.nqubits * scale, scale, dtype=float
      )
      gate_grid = np.arange(
          0.0, self.ngates * scale, scale, dtype=float
      )
      self._wire_grid = wire_grid
      self._gate_grid = gate_grid
  
imports: from __future__ import annotations
  from sympy.core.mul import Mul
  from sympy.external import import_module
  from sympy.physics.quantum.gate import Gate, OneQubitGate, CGate, CGateS
label_desc: Use image node_id 3 for calling the CircuitPlot obj's underlying member method code with example usage: obj._create_grid() without return types