[postprocessor] Better warning if provided binning method is wrong

postprocessor.py

@@ -942,11 +942,16 @@ class PostProcessor(HDF5Container):
         nb_bin = self.pp_params.disk.nb_bin
 
         # radial bins
-        if self.pp_params.disk.binning == "log":
+        if self.pp_params.disk.binning in ["log", "logarithmic"]:
             lrad_in = np.log10(bin_in)
             lrad_ext = np.log10(bin_out)
             rad_bins = np.logspace(lrad_in, lrad_ext, num=nb_bin)
-        elif self.pp_params.disk.binning == "lin":
+        elif self.pp_params.disk.binning in ["lin", "linear"]:
+            rad_bins = np.linspace(bin_in, bin_out, num=nb_bin)
+        else:
+            raise RuntimeWarning(
+                f"Invalid parameter {self.pp_params.disk.binning} for disk binning method, using linear binning"
+            )
             rad_bins = np.linspace(bin_in, bin_out, num=nb_bin)
 
         # Add boundaries