diff --git a/src/grid.py b/src/analyzer/grid.py
copy from src/grid.py
copy to src/analyzer/grid.py
--- a/src/grid.py
+++ b/src/analyzer/grid.py
@@ -1,5 +1,5 @@
 import numpy
-from epoint import EPoint
+from .epoint import EPoint
 
 
 ## Projective transformation of a point with a matrix A.