Show georeferencing unit symbols to make it clearer what units things are in

src/blenderbim/blenderbim/bim/module/georeference/data.py

@@ -38,6 +38,8 @@ class GeoreferenceData:
         cls.data["projected_crs"] = cls.projected_crs()
         cls.data["true_north"] = cls.true_north()
         cls.data["true_derived_angle"] = cls.true_derived_angle()
+        cls.data["local_unit_symbol"] = cls.local_unit_symbol()
+        cls.data["map_unit_symbol"] = cls.map_unit_symbol()
         cls.is_loaded = True
 
     @classmethod
@@ -131,3 +133,20 @@ class GeoreferenceData:
     def true_derived_angle(cls):
         if cls.data["true_north"]:
             return str(round(ifcopenshell.util.geolocation.yaxis2angle(*cls.data["true_north"][0:2]), 3))
+
+    @classmethod
+    def local_unit_symbol(cls):
+        if not (unit := ifcopenshell.util.unit.get_project_unit(tool.Ifc.get(), "LENGTHUNIT")):
+            return "n/a"
+        return ifcopenshell.util.unit.get_unit_symbol(unit)
+
+    @classmethod
+    def map_unit_symbol(cls):
+        if tool.Ifc.get().schema == "IFC2X3":
+            return cls.local_unit_symbol()
+        if crs := tool.Ifc.get().by_type("IfcProjectedCRS"):
+            crs = crs[0]
+            if not (unit := crs.MapUnit):
+                return cls.local_unit_symbol()
+            return ifcopenshell.util.unit.get_unit_symbol(unit)
+        return "n/a"

src/blenderbim/blenderbim/bim/module/georeference/ui.py

@@ -93,13 +93,13 @@ class BIM_PT_gis(Panel):
             row.label(text="Blender Session Origin", icon="TRACKING_REFINE_FORWARDS")
 
             row = self.layout.row(align=True)
-            row.label(text="Eastings")
+            row.label(text=f"Eastings ({GeoreferenceData.data['local_unit_symbol']})")
             row.label(text=props.blender_eastings)
             row = self.layout.row(align=True)
-            row.label(text="Northings")
+            row.label(text=f"Northings ({GeoreferenceData.data['local_unit_symbol']})")
             row.label(text=props.blender_northings)
             row = self.layout.row(align=True)
-            row.label(text="OrthogonalHeight")
+            row.label(text=f"OrthogonalHeight ({GeoreferenceData.data['local_unit_symbol']})")
             row.label(text=props.blender_orthogonal_height)
             row = self.layout.row(align=True)
             row.label(text="XAxisAbscissa")
@@ -133,7 +133,10 @@ class BIM_PT_gis(Panel):
             if value is None:
                 continue
             row = self.layout.row(align=True)
-            row.label(text=key)
+            if key in ("Eastings", "Northings", "OrthogonalHeight"):
+                row.label(text=f"{key} ({GeoreferenceData.data['map_unit_symbol']})")
+            else:
+                row.label(text=key)
             row.label(text=str(value))
             if key == "XAxisOrdinate":
                 row = self.layout.row(align=True)