diff --git a/data/config.ini b/data/config.ini
index 4a6214a..bec1798 100644
--- a/data/config.ini
+++ b/data/config.ini
@@ -9,6 +9,8 @@ root=out
 sub=bathy_sub.npy
 out=bathy.npy
 step=1
+left=0
+right=150
 
 [artha]
 lat=43.398450
diff --git a/data/processing/projection.py b/data/processing/projection.py
index dc3fa20..a172385 100644
--- a/data/processing/projection.py
+++ b/data/processing/projection.py
@@ -3,7 +3,6 @@ import configparser
 import logging
 import pathlib
 
-import matplotlib.pyplot as plt
 import numpy as np
 from scipy import interpolate
 
@@ -51,8 +50,8 @@ buoy = np.asarray(projection.cartesian(*buoy_curvi))
 
 D = np.diff(np.stack((artha, buoy)), axis=0)
 x = np.arange(
-    -150,
-    np.sqrt((D**2).sum()) + 150,
+    config.getfloat("out", "left", fallback=0),
+    np.sqrt((D**2).sum()) + config.getfloat("out", "right", fallback=0),
     config.getfloat("out", "step", fallback=1),
 )
 theta = np.angle(D.dot((1, 1j)))