code: def plot_all_stability_map(self, max_r, increments=50, delu_dict=None,
                                 delu_default=0, plt=None, labels=None,
                                 from_sphere_area=False, e_units="keV",
                                 r_units="nanometers", normalize=False,
                                 scale_per_atom=False):
          
  
          plt = plt if plt else pretty_plot(width=8, height=7)
  
          for i, analyzer in enumerate(self.se_analyzers):
              label = labels[i] if labels else ""
              plt = self.plot_one_stability_map(analyzer, max_r, delu_dict,
                                                label=label, plt=plt,
                                                increments=increments,
                                                delu_default=delu_default,
                                                from_sphere_area=from_sphere_area,
                                                e_units=e_units, r_units=r_units,
                                                normalize=normalize,
                                                scale_per_atom=scale_per_atom)
  
          return plt
docs: Returns the plot of the formation energy of a particles
              of different polymorphs against its effect radius
  
          Args:
              max_r (float): The maximum radius of the particle to plot up to.
              increments (int): Number of plot points
              delu_dict (Dict): Dictionary of the chemical potentials to be set as
                  constant. Note the key should be a sympy Symbol object of the
                  format: Symbol("delu_el") where el is the name of the element.
              delu_default (float): Default value for all unset chemical potentials
              plt (pylab): Plot
              labels (list): List of labels for each plot, corresponds to the
                  list of se_analyzers
              from_sphere_area (bool): There are two ways to calculate the bulk
                  formation energy. Either by treating the volume and thus surface
                  area of the particle as a perfect sphere, or as a Wulff shape.