point assignment should return a tuple of floats

Author: AhmetNSimsek

siibra/volumes/parcellationmap.py

@@ -1032,7 +1032,7 @@ def _assign_points(self, points: pointcloud.PointCloud, lower_threshold: float)
                         assignments.append(
                             MapAssignment(
                                 input_structure=pointindex,
-                                centroid=tuple(np.array(position).round(2)),
+                                centroid=tuple(position),
                                 volume=vol,
                                 fragment=frag,
                                 map_value=value