[plotter] add option to recenter maps + renamed slice_T rule

plotter.py

@@ -513,6 +513,7 @@ class Plotter(Aggregator, BaseProcessor):
         unit_time=U.Myr,
         put_units=True,
         unit_space=U.pc,
+        center_space=False,
         cmap="plasma",
         norm="log",
         put_cbar=True,
@@ -527,10 +528,13 @@ class Plotter(Aggregator, BaseProcessor):
         ax_h = self._axes_h[ax_los]
         ax_v = self._axes_v[ax_los]
 
-        im_extent = self.save.root.maps._v_attrs.im_extent
+        im_extent = np.array(self.save.root.maps._v_attrs.im_extent)
         unit_length = self.save.root._v_attrs["unit_length"]
 
-        im_extent = np.array(im_extent) * unit_length.express(unit_space)
+        if center_space:
+            center = self.save.root.maps.center
+            im_extent = im_extent - center
+        im_extent = im_extent * unit_length.express(unit_space)
 
         node = self.save.get_node("/maps/{}_{}".format(name, ax_los))
         dmap = node.read()
@@ -1223,14 +1227,14 @@ class Plotter(Aggregator, BaseProcessor):
                 "Column density map",
                 dependencies=["coldens"],
             ),
-            "T": PlotRule(
+            "slice_T": PlotRule(
                 self,
                 partial(
                     self._plot_map,
                     "T",
                     label=r"$T$",
                 ),
-                "Temperature map",
+                "Slice of temperature",
                 dependencies=["T"],
             ),
             "alpha_disk": PlotRule(