fixed ess.fieldmap.convert_3d_to_1d

ess/fieldmap.py

@@ -440,7 +440,7 @@ def convert_3d_to_1d(path: str, map_name: str, map_type: str = "electric", file_
     field_1d = field_on_axis(header, field, 3, x_on_axis=dist_from_axis)[1]
     if dist_from_axis:
         # Here we give T/m rather than T given for 3D field map
-        field_1d = field_1d / dist_from_axis
+        field_1d = (field_1d - field_on_axis(header, field, 3)[1]) / dist_from_axis
 
     header_1d = np.array([header[0], header[1], header[-1]])
     file_path_out = f"{file_path[:-4]}_1D.{file_end_out}"