From 0f749fd107a4cddb665f765170f4740ad10e5bae Mon Sep 17 00:00:00 2001
From: Fabian Joswig <fabian.joswig@ed.ac.uk>
Date: Mon, 28 Feb 2022 13:25:09 +0000
Subject: [PATCH] refactor: instantiation of Obs in import_jackknife slightly
 optimized

---
 pyerrors/obs.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pyerrors/obs.py b/pyerrors/obs.py
index 8089cf2e..9ad3a0d4 100644
--- a/pyerrors/obs.py
+++ b/pyerrors/obs.py
@@ -1470,7 +1470,8 @@ def import_jackknife(jacks, name, idl=None):
     length = len(jacks) - 1
     prj = (np.ones((length, length)) - (length - 1) * np.identity(length))
     samples = jacks[1:] @ prj
-    new_obs = Obs([samples], [name], idl=idl)
+    mean = np.mean(samples)
+    new_obs = Obs([samples - mean], [name], idl=idl, means=[mean])
     new_obs._value = jacks[0]
     return new_obs